Temat: n-heksan - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ultrasonic study of molecular interaction in binary liquid mixtures of n-hexane with alcohols
Autorzy:: Santhi, N.
Sabarathinam, P.
Alamelumangai, G.
Madhumitha, J.
Emayavaramban, M.
Powiązania:: https://bibliotekanauki.pl/articles/411698.pdf
Data publikacji:: 2012
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: alkohol
parametry akustyczne
mieszaniny
n-heksan
n-hexane
alcohol
acoustical parameters
mixtures
Opis:: Ultrasonic velocity, viscosity and density of alcohol[s] in n-hexane have been measured AT various temperatures in the range of 303.15 - 318.15K. From the experimental data, the acoustical parameters such as molar volume, adiabatic compressibility, intermolecular free length and their excess values have been computed and presented as functions of compositions. The deviations from ideality of the acoustical parameters are explained on the basis of molecular interactions between the components of the mixtures. The variations of these parameters with composition of the mixture suggest the strength of interactions in these mixtures.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2012, 5; 59-71
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Adsorption of n-hexane on a low-cost adsorbent obtained from waste tyres and its microwave regeneration
Autorzy:: Kotkowski, Tomasz
Cherbański, Robert
Molga, Eugeniusz
Powiązania:: https://bibliotekanauki.pl/articles/2173416.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: regeneracja mikrofalowa
granulowany węgiel aktywny
n-heksan
microwave regeneration
tyre pyrolysis char
granular activated carbon
n-hexane
Opis:: This work investigates adsorption of n-hexane on activated tyre pyrolysis char (ATPC) and granular activated carbon (GAC) as a reference material in a fixed-bed column. Microwave-assisted regeneration is also considered. The adsorbed amount of n-hexane on ATPC is in the range of 37–58 mg/g. Microwave-assisted desorption of ATPC samples enables the recovery of up to 95% of adsorbed n-hexane in this non-optimized microwave setup with the efficiency of microwave energy conversion into heat of only 5–6%. For the 50% breakthrough time, ATPC and GAC are able to purify the n-hexane gas volumes in the ranges of 20–90 and 935–1240 cm3/g, respectively. While adsorption kinetics is not satisfactorily described by pseudo-first and pseudo-second order kinetic models, it is very well reflected by a family of dynamic adsorption models, which are modelled with a single logistic function. Internal diffusion is likely the rate limiting step during adsorption on ATPC, while external and internal diffusion likely plays a role in adsorption to GAC. Although microwave-assisted regeneration is performed in a general purpose microwave reactor, both adsorbents show excellent performance and are very good candidates for the adsorption process. Preliminary results show that magnetite can further reduce microwave energy consumption.
Źródło:: Chemical and Process Engineering; 2022, 43, 1; 57--80
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Tyre-derived activated carbon – textural propertiesand modelling of adsorption equilibrium of n-hexane
Autorzy:: Kotkowski, Tomasz
Cherbański, Robert
Molga, Eugeniusz
Powiązania:: https://bibliotekanauki.pl/articles/184985.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: adsorption
n-hexane
tyre-derived activated carbon
pyrolysis
tyres
adsorpcja
n-heksan
węgiel aktywny pochodzący z opon
piroliza
opony
Opis:: There is general agreement that primary pyrolysis products of end-of-life tyres should be valorised toimprove the economics of pyrolysis. In this work, tyre pyrolysis char (TPC) is produced in a pyrolysispilot plant designed and built at our home university. The produced TPC was upgraded to tyre-derivedactivated carbon (TDAC) by activation with CO2, and then characterised using stereological analysis(SA) and nitrogen adsorption at 77 K. SA showed that the grains of TPC and TDAC were quasi-spherical and slightly elongated with a 25% increase in the mean particle cross-section surface area forTDAC. The textural properties of TDAC demonstrated the BET and micropore surface areas of 259 and70 m2/g, respectively. Micropore volume and micropore surface area were 5.8 and 6.7 times higher forTDAC than TPC at2nm, respectively. Then-hexane adsorption was investigated using experimentsand modelling. Eight adsorption isotherms along with three error functions were tested to model theadsorption equilibrium. The optimum sets of isotherm parameters were chosen by comparing sum ofthe normalized errors. The analysis indicated that the Freundlich isotherm gave the best agreementwith the equilibrium experiments. In relation to different activated carbons, the adsorption capacityof TDAC forn-hexane is about 16.2 times higher than that of the worst reference material and 4.3times lower than that of the best reference material. In addition, stereological analysis showed thatactivation with CO2did not change the grain’s shape factors. However, a 25% increase in the meanparticle cross-section surface area for TDAC was observed.
Źródło:: Chemical and Process Engineering; 2020, 41, 1; 25--44
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ecological aspects of using mixtures of canola oil with n-hexane in diesel engine
Autorzy:: Longwic, Rafał
Sander, Przemysław
Tatarynow, Dawid
Powiązania:: https://bibliotekanauki.pl/articles/2097661.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: Diesel engine
nitrogen oxides
hydrocarbons
carbon dioxide
combustion
canola oil
n-hexane
common rail
silnik Diesla
tlenki azotu
węglowodory
dwutlenek węgla
spalanie
olej rzepakowy
n-heksan
Common Rail
Opis:: The article discusses the results of research on the use of canola oil and canola oil with the addition of n-hexane in a compression-ignition engine. An engine with a Common Rail injection system was tested in real traffic conditions on the road and on a chassis dynamometer. The tested fuels were fed to the engine by an additional fuel supply system. An analysis of the effect of the addition of n-hexane on the emission of the main components of toxic exhaust gases was carried out. The proposed solution may contribute to extending the service life of currently used compression ignition engines due to the improvement of the ecological properties of this type of drive sources.
Źródło:: Combustion Engines; 2022, 61, 3; 56--60
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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