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Tytuł:
Problems connected with the construction and the functioning of the prototype oxidising catalytic converter
Autorzy:
Kałużny, J.
Iskra, A.
Babiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/247602.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
oxidising catalytic converter
carbon nanotubes
Opis:
Nanomaterials and nanotubes represent a relatively new area of science and industrial practice. The authors of the article suggest replacing the standard washcoat of the catalytic converter and using the nanotubes, which is expected to substantially increasethe contact surface of the catalytic layer with the exhaust gases. The article presents the problems in constructing the prototype catalytic converter as well as solving them and the construction of the converter. The constructed prototype oxidising catalytic converter was constructed by covering the standard ceramic core with cell density equal to 400 cpsi. The layer of nanotubes with an extended surface contact with exhaust gases was covered with platinum in a much lower amount than in a standard converter. The prototype converter was assembled in the exhaust systems of modern, turbo-charged diesel engines. The converter was subject to preliminary research on the engine test bed and in the road test NEDC. The research outcomes of conversion of the prototype converter confirm the possibility of applying nanotubes in the atmosphere of exhaust gases. They also indicate that if the existing problems were solved, the converters built according to the prototype converters could be used on an industrial scale. The most significant problems to be solved can be observed in covering the core with the nanotubes layer of an organised spatial structure. Moreover, it is essential to obtain such features of the, platinum cluster which enable to lower the light-off temperature. An analysis of benefits resulting from applying the described prototype converter and possible technical solutions aiming to reduce the observed technical problems are included in the summary of the article.
Źródło:
Journal of KONES; 2010, 17, 4; 213-219
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions in exhaust pipe in CI engine in light of monitoring of catalytycal converter
Autorzy:
Rychter, M.
Powiązania:
https://bibliotekanauki.pl/articles/242319.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
catalytic converter
emission
monitor
pressure
sensor
temperature
Opis:
The paper presents main method of monitoring catalytically comerter in CI engines. In this paper presents modified test bedwitch used to testes of exhaust pipe in light of determination possibility of application measurement probę to determine of NOx concentration. Those investigation could help to evaluate of possibility catalytically converter monitoring within the framework on board diagnostic systems The OBD system is an integral part of the vehicle connected with the engine control system, Nowadays the investigation on the on board diagnostic systems in their different applications are one of the basic problems that the OBD method is concerned with. The implementation of the investigation method for the OBD system efficiency is one of the main questions of the matter in hand. Diagram of modification exhaust pipe with installed catalytically converter in test bed and present of measurement points, distribution of temperature in measurement point TO-T8 exhaust pipe of testing engine without catalytically converter during realization ESC test, distribution of temperature in measurement point TO-T8 exhaust pipe of testing engine with 200 cpsi catalytically converter during realization ESC test, distribution of pressure in measurement point pO-p8 exhaust pipe oftesting engine without catalytically converter during realization ESC test, distribution of temperature in measurement point pO-p8 exhaust pipe of testing engine with 200 cpsi catalytically converter during realization ESC test are presented in the paper.
Źródło:
Journal of KONES; 2009, 16, 2; 401-406
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnosing catalytic converters based on gas temperature measurement
Diagnozowanie reaktorów katalitycznych spalin w oparciu o pomiary temperatury spalin
Autorzy:
Łączyński, J.
Powiązania:
https://bibliotekanauki.pl/articles/133505.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
catalytic converter
monitoring
diagnostic
reaktor katalityczny
diagnostyka
Opis:
The article presents methodology of experimental, simulated catalytic converter deactivation tests and measurements of the temperature changes of the exhaust gases flowing through a tested catalytic converter mounted in the exhaust system of the Rover 1.4 engine and operating in steady conditions. The energy balance of the catalytic converter has been presented, based on the equation which allows to calculate the exhaust gas temperature change in this converter, depending on the intensity of the chemical reactions occurring in it, and its technical condition. This in turn allowed to assess the effectiveness of the catalytic converter and to formulate diagnostic evaluation criteria for the trifunctional catalytic converter.
W artykule przedstawiono metodykę eksperymentalnych, symulacyjnych badań dezaktywacji reaktora katalitycznego oraz pomiary zmiany temperatury spalin przepływających przez badany reaktor katalityczny zamontowany w układzie wylotowym silnika Rover 1,4 pracującego w warunkach ustalonych. Przedstawiono energetyczny bilans reaktora katalitycznego, w oparciu o równanie którego wyznaczono zależność pozwalającą na obliczenie zmiany temperatury spalin w tym reaktorze w zależności od intensywności reakcji chemicznych w nim zachodzących i jego stanu technicznego, co pozwoliło dokonać oceny skuteczności działania reaktora katalitycznego i sformułować kryteria oceny diagnostycznej trójfunkcyjnego reaktora katalitycznego spalin.
Źródło:
Combustion Engines; 2013, 52, 3; 745-751
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyses of temperature and pressure condition in CI engines exhaust pipe in light of application NOx sensor to determine of catalytic converter efficiency
Autorzy:
Rychter, M.
Powiązania:
https://bibliotekanauki.pl/articles/243619.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
internal combustion engine
catalytic converter
diagnostic system
Opis:
The development of a catalytic converter required an analysis of selected physical parameters of the supports. This resulted from the necessity to assume given parameters of the supports applied in the tests in exhaust gas environment in the CI engines. An analysis of ionic conductors, which constitutes the basic solution in voltage sensors providing signals through NOx electrocatalysis, is presented. The aim of this paper is to determine the basis for the monitoring of catalytic converters in compression ignition engines by the emission level of a selected exhaust gas component as a diagnostic signal. The emission of NOx has been taken as the basis. This required the development of a specialized system allowing the reduction of NOx and obtaining of a diagnostic signal reflecting the level of the said reduction. This paper includes same results of testing and possibilities monitoring of prototype catalytic converter on the test bed. On the basis of the performed examinations and obtained test results the following conclusions can be drawn: the analysis of the NOx concentrations in exhaust gas from the compression-ignition engine can be based on the indications of the voltage probes with the modified electrodes of the oxygen pump, the application of the reduction conditions in the voltage probes using the nitrogen oxides reduction by the electro-catalytic way depends on the exhaust gas parameters, the values of which change depending on the rotational crankshaft speed and engine load, and for this reason obtaining the diagnostic signal for the whole engine operation range is impossible, the control of the correctness of the catalyst operation regarding the nitrogen oxides reduction can be realised for the defined operating parameters of the tested engine, for phases VIII and X of the ESC test the reheating the test probe installed before the catalyst was unnecessary, owing to the high exhaust gas temperature (737-759°C).
Źródło:
Journal of KONES; 2008, 15, 3; 451-463
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of operating conditions and emissions of the selected components of exhaust gas during SI engine braking phase
Autorzy:
Ubysz, A.
Łazarz, B.
Flekiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/245339.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
toxic emissions
engine braking phase
catalytic converter
non-driving phases
Opis:
This paper presents analysis of conditions of CO2, CO, HC and NOX emissions during engine braking phase invehicles with 1.6 SI engine, based on the results of investigations by Professor Romaniszyn. The analysis aimed to determine the effect of cooling of catalytic converter and engine chamber on emissions of toxins and fuel efficiency in next driving phase. Based on own investigations, the synthesis of fuel consumption under three non-driving conditions of engine operation (i.e. continuous drive, engine braking and drive in neutral) is also presented. Current research centres often carry out extensive investigations of fuel efficiency and emissions of toxic compounds during real use of vehicles. Their results, due to previous assumptions or limitations in the scope of investigations, rarely provide an overall view of the problem. These attempts are typically made in scientific papers and dissertations [1-3]. Selective approach to the problem can be justified by the complexity and varied impact of each phase of engine 's operation on fuel consumption under unsteady heat conditions. Fuel consumption map in speed-acceleration coordinates for vehicle and engine, characteristics of CH emissions, parameters of engine braking phase and temperature characteristics of exhaust gases before catalytic converter are presented in the paper.
Źródło:
Journal of KONES; 2009, 16, 4; 469-476
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CFD analysis of the effect of the exhaust manifold design on the close-coupled catalytic converter performance
Autorzy:
Martinez-Martinez, S.
Leal-Garza, R. D.
Sanchez-Cruz, F. A.
Villarreal, E. B.
Amado-Covarrubias, M.
Powiązania:
https://bibliotekanauki.pl/articles/247790.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Close-Coupled Catalytic Converter
Exhaust Manifold
flow uniformity
pressure drop
Opis:
It is a common practice to mount a catalytic converter directly at the outlet of the exhaust manifold in order to reduce the cold start emissions from the automotive engines by improving the light-off time. The so called Close-Coupled Converter, because of its nearness to the engine, is more exposed to non-uniform fluid flows comingfrom the individual manifold runners, what frequently yields a stream of gases flowing mainly through a section of the monolith causing the aging of the catalyst and low conversion efficiency, among other negative effects. Computational Fluid Dynamics (CFD) has became a very useful and widely used tool to analyze and optimize this kind of exhaust after-treatment systems in a relatively fast and accurate way for design purposes. There are several designs of exhaust manifolds whose shape and dimensions are mainly restricted not only by the engine characteristics but by the space constraints of the particular vehicles they are designedfor. In this work the commercial CFD code ANSYS FLUENT was used to evaluate and compare the effect of three shapes of exhaust manifolds on the fluid flow uniformity at the entrance of the Close-Coupled Converter. Pressure drop in the entire Manifold-Converter device is also an important parameter considered for the design evaluation. The manifolds investigated are of type cast, 4-2-1 and L-shaped, which are commonly used in the automotive industry.
Źródło:
Journal of KONES; 2010, 17, 4; 303-311
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inverse aspects of the three-way catalytic converter operation in the spark ignition engine
Autorzy:
Żmudka, Z.
Postrzednik, S.
Powiązania:
https://bibliotekanauki.pl/articles/242021.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
catalytic converter
conversion rate
flow resistance
local resistance number
friction number
Opis:
There are two sides of the catalyst operation: favourable and adverse. The positive side can be expressed by a conversion rate of harmful substances which is the principal parameter of catalyst work in respect of ecology. However, resistance of exhaust gas flow through the catalytic converter is also an essential problem. This is just the negative, adverse side of the converter operation. The catalytic converter can be treated as a local or linear resistance element of exhaust system. The first model, in which flow resistance generated by a catalyst is treated as local resistance, is more simplified. It is especially useful in case, when detailed constructional data of converter are unknown and the analysis of flow resistances in exhaust system is necessary. The basic measured quantity of flow resistance is pressure drop of exhaust gas within the catalyst. Next, on the basis of taken measurements also resistance number for the tested catalyst is calculated and analysed. Resistance number of the converter is calculated using Darcy model. In the second case, exhaust gas flow resistance through catalyst is treated as linear resistance with energy dissipation (linear frictional resistance) distributed linearly along way of exhaust gas flow. Friction number for the tested converter is calculated and analysed. The problem has been illustrated by the results of experimental researches of the three-way catalytic converter installed in the exhaust system of the spark ignition engine.
Źródło:
Journal of KONES; 2011, 18, 2; 509-516
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of heating process of catalytic converter using thermo-vision
Analiza procesu nagrzewania reaktora katalitycznego przy użyciu termowizji
Autorzy:
Worsztynowicz, B.
Uhryński, A.
Powiązania:
https://bibliotekanauki.pl/articles/134003.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
internal combustion engine
catalytic converter
thermovision
silnik spalinowy
reaktor katalityczny
termowizja
Opis:
The article tackles the issues related to a process of heating of three way catalytic converter during the cold start and the heating of the spark ignition engine. The measurements on the test bench were performed, taking into consideration how engine works directly after the start, on the idle speed and under the load, during which the temperature of the exhaust gases in the exhaust system and coolant on the cylinder head were measured. At the same time the track of the heat state of the catalytic converter was monitored using thermo-vision camera. The results of the measurements were presented as charts and selected thermo-grams, qualitatively representing the issue of heating of the catalytic converter.
W artykule omówiono zagadnienia związane z procesem nagrzewania trójfunkcyjnego reaktora katalitycznego podczas zimnego rozruchu i nagrzewania silnika spalinowego ZI. Przeprowadzono pomiary na stanowisku hamowni, uwzględniając pracę silnika bezpośrednio po rozruchu, na biegu jałowym oraz obciążonego, w czasie których mierzono temperaturę spalin w układzie wylotowym i cieczy w głowicy silnika, równocześnie prowadząc zapis stanu cieplnego reaktora katalitycznego przy użyciu kamery termowizyjnej. Wyniki pomiarów przedstawiono w postaci wykresów oraz wybranych termogramów, obrazujących jakościowo zagadnienie nagrzewania się reaktora katalitycznego.
Źródło:
Combustion Engines; 2015, 54, 3; 41-51
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of thermal state of catalytic converter depending on fuel supply and engine load using thermo-vision
Autorzy:
Worsztynowicz, B.
Uhryński, A.
Borkowski, B.
Pluta, M.
Powiązania:
https://bibliotekanauki.pl/articles/132956.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
catalytic converter
thermovision
thermal state
emissivity
reaktor katalityczny
termowizja
stan termiczny
emisyjność
Opis:
The paper discusses the problem of thermal state of three-way catalytic converter depending on engine load with spark ignition fueled with gasoline and natural gas. The measurements on the test bench were performed, during which the temperature of the exhaust gases in the exhaust system was measured with the help of thermocouples, and at the same time, the track of the thermal state of the catalytic converter was monitored using thermo-vision camera. The stable work of engine with different rotation speed and values of load was considered together with transient states. The results of the measurements were presented in forms of charts and selected thermograms, qualitatively presenting the issue of thermal state of the catalytic converter.
Źródło:
Combustion Engines; 2017, 56, 3; 30-36
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental analysis of flyash based, ion exchanged zeolite as catalyst for SI engine exhaust emission control
Autorzy:
Karthikeya, D.
Saravanan, C. G.
Powiązania:
https://bibliotekanauki.pl/articles/247392.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Synthesis of fly ash
X-Zeolite
catalytic converter
emission control
13 X Zeolite
Opis:
Lean Burn gasoline engines are receiving increasing application because of their potential of improved fuel economy. The conventional three-way converter used in gasoline engines controls effectively the levels of CO and HC, but it displays poor conversion in harmful NOx emission. This study has investigated the use of different materials with metal additives as support for effective NOx control in gasoline engines. In this work, flyash, which is relatively abundant and inexpensive, has been used as a replacement for expensive materials. Development of Catalysts from waste materials is an effective means to enhance the value of the waste. In the present work, X-Zeolite was synthesized from Coal Fly ash. 13-X zeolite was purchased from market. By the process of exchanging Na+ ions present in these zeolites with copper, Silver and Iron metal ions separately, six catalysts were prepared. Investigations were carried out on the 3 cylinder, 4-stroke, water cooled Maruthi Omni Gasoline Engine with a displacement volume of 796 cc and coupled with eddy current dynamometer. The packed catalyst bed was housed in a 100 mm diameter cylindrical pipe and is connected near to the exhaust manifold. AVL Di-gas analyser is used to measure the NOx, CO, HC, CO2, O2 emissions. Experiments were conducted at various loads from no load to maximum load without catalytic converter and then using the Ag-X, Ag-13X, Fe-X , Fe-13X, Ni -X and Ni -13X zeolite catalytic converters. The result reveals that in house made Ag-X , Fe-X and Ni -X Catalysts reduce emission at all levels of load conditions. Ag-X catalyst gives better conversion than Fe-X catalyst and Ni-X catalyst.
Źródło:
Journal of KONES; 2013, 20, 3; 229-235
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Catalytic reactor as a resistance element of ICE exhaust system
Autorzy:
Postrzednik, S.
Żmudka, Z.
Powiązania:
https://bibliotekanauki.pl/articles/242786.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
internal combustion engine
catalytic converter
pressure drop
local and linear flow resistance
resistance number
Opis:
Selected problems connected with operation of catalytic reactors are presented. Conversion rate of harmful substances is the principal parameter of catalyst work in respect of ecology. However, resistance of exhaust gas flow through the catalytic converter is also essential problem, apart from its chemical efficiency because fitting the catalyst in exhaust system alters flow characteristic of this system significantly. Catalytic converter can be treated as local or linear resistance element of exhaust system. The first model, in which flow resistance generated by a catalyst is treated as local resistance, is more simplified. Resistance number of the converter was calculated using Darcy model. In the second case, exhaust gas flow resistance through catalyst is treated as linear resistance with energy dissipation (linear frictional resistance) distributed linearly along way of exhaust gas flow. Friction number for the tested converter was calculated and analysed. The problem has been illustrated by results of experimental researches of three-way catalytic converter installed in exhaust system of spark ignition engine and its basic analysis.
Źródło:
Journal of KONES; 2007, 14, 4; 351-356
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of AdBlue dosage on the process of selective catalytic reduction of nitrogen oxides
Wpływ wielkości dawki AdBlue na proces selektywnej redukcji katalitycznej tlenków azotu
Autorzy:
Brzeżański, M.
Sala, R.
Powiązania:
https://bibliotekanauki.pl/articles/133222.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
nitrogen oxide emissions
SCR catalytic converter
AdBlue
urea
ammonia slip
emisja tlenków azotu
reaktor katalityczny SCR
Opis:
This article presents test results obtained for nitrogen oxides emission reduction by the method of selective catalytic reduction in a diesel engine. A special steady-state test cycle was prepared in order to identify the most critical operating points of the SCR system. Areas of low system performance and the reasons for solid fractions formation and deposition were also investigated. The research examined the phenomenon of the occurrence of ammonia slip emissions into the environment.
W artykule zawarto wyniki badań systemu zmniejszania emisji tlenków azotu metodą selektywnej redukcji katalitycznej SCR. Opracowano test badawczy, w którym wskazano krytyczne stany pracy systemu. Zidentyfikowano obszary małej skuteczności redukcji oraz przyczyny odkładania się stałych depozytów. Zbadano także przyczyny pojawiania się emisji amoniaku do otoczenia.
Źródło:
Combustion Engines; 2013, 52, 3; 1032-1037
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling study of flue gas flow pattern with pressure, amount and shape variation catalytic converter
Autorzy:
Ghofur, A.
Isworo, H.
Subagyo, R.
Tamjidillah, M.
Siswanto, R.
Ma’ruf, -
Purwanto, H.
Muchsin, -
Powiązania:
https://bibliotekanauki.pl/articles/1818507.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
shape effect
absorption effectiveness
ANSYS
catalytic converter
filter-not- cut
filter-cut
efekt kształtu
skuteczność wchłaniania
katalizator
Opis:
Purpose: The purpose of this study is to analyse the modelling of exhaust gas flow patterns with variations in pressure, number, and shape of filters on the catalytic converter. Design/methodology/approach: The research method used is a simulation using ANSYS, which starts by creating a converter catalytic model with pressure variations: (0.5-1.5 atm), number of filters: (2-5), and the form of filter-cut/filter-not-cut. Findings: The decrease in velocity is caused by non-uniform velocity in the exhaust gas flow that occurs when passing through a bend in the filter-cut that serves as a directional flow to create turbulence. Filter-cut type tends to have fluctuating pressure, turbulence flow pattern shape so that contact between filter and exhaust gas is more effective. Based on the analysis of flow patterns, the speed and pressure of the 5 filter-not-cut design at a pressure of 0.5 are the best, while at pressure (1-1.5 atm) the type 5 filter-cut is the best. Research limitations/implications: This study is limited to filter-not-cut and filter-cut types with variations in the number of filters: 2, 3, 4, and 5, and the inlet pressure between 0.5-1 atm. Practical implications: The practical implications of this study are to find a catalytic converter design that has advantages in the effectiveness of exhaust gas absorption. Originality/value: The results show that the filter-not-cut and filter-cut types have the best effectiveness in the number of 5 filters. Filter-not-cut at the pressure of 0.5 atm and filter-cut at pressure (1-1.5 atm).
Źródło:
Archives of Materials Science and Engineering; 2020, 103, 1; 5--17
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of selected elements in catalytic converters using ICP-MS and microwave digestion
Autorzy:
Kieres, Weronika
Palka, Grzegorz
Łuczak-Zelek, Karolina
Partyka, Monika
Powiązania:
https://bibliotekanauki.pl/articles/1429828.pdf
Data publikacji:
2021
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
ICP-MS
car catalyst
catalytic converter
microwave digestion
circular economy
katalizator samochodowy
katalizator
gospodarka o obiegu zamkniętym
Opis:
Fuels combustion, polluting the atmosphere is a side effect of an engines’ work. Increasing ecological awareness has led to constant pursuit of disposing harmful substances properly. Catalytic converters (car catalysts), containing precious metals from the platinum group, including palladium, platinum and rhodium, have been commonly adopted for this purpose. These critical elements can be found in many raw materials used frequently throughout the economy. Therefore, it is economically viable to retrieve these elements from, among the others, spent catalysts, so they can be reused to manufacture new converters. In order to determine a possible cost of spent car catalyst, it is essential to use the analytical techniques to determine elemental content in any given sample. X-ray fluorescence spectroscopy (XRF) is an example of such a technique. It is nevertheless advisable to use a complementary procedure to confirm any results obtained. A cross-verification technique was developed using inductively coupled plasma mass spectrometry (ICP-MS). This procedure was verified using comparative studies, which confirmed its usefulness and correctness.
Źródło:
Acta Innovations; 2021, 38; 5-11
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and activity evaluation of Ce-Mn-Cu mixed oxide catalyst for selective oxidation of co in automobile engine exhaust: effect of Ce/Mn loading content on catalytic activity
Autorzy:
Bilal, Yasir
Nasir, Muhammad Ali
Nasreen, Sadia
Akhter, Niaz Ahmed
Pasha, Riffat Asim
Noor, Muhammad Farhan
Powiązania:
https://bibliotekanauki.pl/articles/101992.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
base metal oxide catalyst
catalytic converter
CO sensor
CO-precipitation
catalytic activity
katalizator tlenku metalu zasadowego
katalizator
czujnik CO
strącanie CO
aktywność katalityczna
Opis:
A series of Mn-doped CeO2-CuO catalyst (CeO2-MnOx-CuO) (Ce/Mn molar ratio of 0.5, 1.0 2.0 and 3.0) were prepared using co-precipitation method for the selective oxidation of CO in automobile engine exhaust. The content of copper was 5.0 wt. % in each sample. Catalysts were installed on the automobile engine exhaust and CO amount was recorded with help of CO sensor, with and without the catalyst. The catalytic converter efficiency was estimated for each catalyst through efficiency formula. It was observed that Ce/Mn catalyst with a molar ratio of 2.0 shows the maximum efficiency (88.35%). Stability of conversion process was analyzed by plotting the CO amount with respect to time. The catalyst with Ce/Mn molar ratio of 2.0 performed the most streamline conversion process with least deviations.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 260-266
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 18

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