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Abstrakty
In this work the La2O3/CeO2 (33 mol % of La) and CaO/CeO2 (33 mol % of Ca) catalysts were prepared by the impregnation method and characterized by XRD and CO2-TPD. The catalytic properties of the catalysts were tested in the OCM process at 1073 K using the methane/oxygen mixture of the mole ratio 3.7 or 2.5 additionally containing CO2 and helium balance. It was found that in the presence of both catalysts an addition of CO2 enhances the selectivity to the ethylene and ethane and it does not have any negative influence on methane conversion. In the case of the CaO/CeO2 catalyst the promoting effect of CO2 was the highest. When the partial pressure of CO2 equals to 39 kPa the increase in selectivity from 36 to 41% was noted while the conversion of methane equal to 19.4-19.7 %.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Numer
Strony
22-26
Opis fizyczny
Daty
wydano
2013-03-01
online
2013-03-27
Twórcy
autor
- Cracow University of Technology, Institute of Organic Chemistry and Technology, Warszawska 24, 31-155, Kraków, Poland, blitawa@pwsz-ns.edu.pl
- State Higher Vocational School in Nowy Sącz, Institute of Technology, Zamenhoffa 1a, 33-300 Nowy Sącz, Poland
autor
- Cracow University of Technology, Institute of Organic Chemistry and Technology, Warszawska 24, 31-155, Kraków, Poland
autor
- Cracow University of Technology, Institute of Organic Chemistry and Technology, Warszawska 24, 31-155, Kraków, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_pjct-2013-0005