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Wyszukujesz frazę "Jabłoński, Krzysztof." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
The influence of sulfur addition on the hazard-type reaction of ilmenite ores with sulfuric acid
Autorzy:
Jabłoński, Maciej
Lubkowski, Krzysztof
Tylutka, Sandra
Ściążko, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1849314.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
hazard-type reaction
ilmenite
titanium dioxide pigment
sulfur
Opis:
The paper presents results of thermokinetic investigation of the hazard-type reaction of Norwegian and Australian ilmenite ores with sulfuric acid, modified by the addition of elemental sulfur, to increase the process safety in industrial conditions. In the reactions of both ilmenite ores the addition of sulfur caused a reduction of the thermal power generated in the reaction and a decrease in the value of the thermokinetic parameter ΔTmax/Δτ for almost the whole range of initial concentrations of sulfuric acid. It was also found that the addition of sulfur to the reaction did not negatively affect the degree of ilmenite leaching. The interpretation of the obtained thermokinetic curves allowed to determine safe process conditions for both types of titanium raw materials.
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 3; 17-23
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat effects in the reaction of sulfuric acid with ilmenites influenced by initial temperature and acid concentration
Autorzy:
Jabłoński, Maciej
Lubkowski, Krzysztof
Tylutka, Sandra
Ściążko, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1849318.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
ilmenites digestion
sulfuric acid
enthalpy of reaction
Opis:
The influence of temperature and sulfuric acid concentration on the enthalpy and the rate of heat release during the reaction of Norwegian and Australian ilmenites with sulfuric acid was determined. The experimental results obtained from calorimetric measurements were compared with theoretical calculations based on the oxide composition and the phase composition of the raw material. Experimentally determined heat of reaction for Norwegian ilmenite (900–940 kJ/kg) and Australian ilmenite (800–840 kJ/kg) showed good agreement with theoretical calculations based on the phase composition of the raw material. It was found that the enthalpy of ilmenites decomposition reaction does not depend on the concentration of sulfuric acid in the concentration range from 83% to 93%. It was also demonstrated that the temperature and concentration of sulfuric acid have a significant impact on the thermokinetics of the decomposition process, increasing the value of the average rate of temperature change.
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 3; 37-42
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of sulfur addition on the hazard-type reaction of ilmenite ores with sulfuric acid
Autorzy:
Jabłoński, Maciej
Lubkowski, Krzysztof
Tylutka, Sandra
Ściążko, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1849319.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
hazard-type reaction
ilmenite
titanium dioxide pigment
sulfur
Opis:
The paper presents results of thermokinetic investigation of the hazard-type reaction of Norwegian and Australian ilmenite ores with sulfuric acid, modified by the addition of elemental sulfur, to increase the process safety in industrial conditions. In the reactions of both ilmenite ores the addition of sulfur caused a reduction of the thermal power generated in the reaction and a decrease in the value of the thermokinetic parameter ΔTmax/Δτ for almost the whole range of initial concentrations of sulfuric acid. It was also found that the addition of sulfur to the reaction did not negatively affect the degree of ilmenite leaching. The interpretation of the obtained thermokinetic curves allowed to determine safe process conditions for both types of titanium raw materials.
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 3; 17-23
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enthalpy of isopropanol adsorption on zeolite
Autorzy:
Jabłoński, Maciej
Dzienisz, Alicja
Sawicka, Marta
Wróblewska, Elwira
Lubkowski, Krzysztof
Dąbrowska, Grażyna
Piz, Mateusz
Sreńscek-Nazzal, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/779858.pdf
Data publikacji:
2019
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Enthalpy
Adsorption
Zeolite
HiSiv 3000
Isopropanol
Opis:
The enthalpy of isopropanol adsorption on ZSM-5 (Zeolite Socony Mobil Framework Type MFI) was determined by the static adsorption method at the temperature range from 20°C to 100°C. Langmuir and Huttig models of equilibrium adsorption have been used to calculate the enthalpy of isopropanol adsorption at these conditions. Adsorption isotherms determined by the flow method at 20°C and 30°C have been also used in the calculations. The obtained values of isopropanol adsorption enthalpy were compared with the values of isopropanol evaporation enthalpy and with the results obtained from isopropanol and water desorption measurements with thermogravimetry and differential scanning calorimetry methods.
Źródło:
Polish Journal of Chemical Technology; 2019, 21, 4; 58-65
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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