EFFECT OF CO2 AND MELT DECARBONATION ON THE DIMERIZATION OF METHANE IN MOLTEN LI2CO3-NA2CO3-K2CO3 SUPPORTED BY LIALO2 OR LI2TIO3 AT 750-850-DEGREES-C

Authors
CASSIR M TASHJIAN V DEVYNCK J MOYAUX D CLAES P
Citation
M. Cassir et al., EFFECT OF CO2 AND MELT DECARBONATION ON THE DIMERIZATION OF METHANE IN MOLTEN LI2CO3-NA2CO3-K2CO3 SUPPORTED BY LIALO2 OR LI2TIO3 AT 750-850-DEGREES-C, Catalysis letters, 35(1-2), 1995, pp. 45-56
Citations number
21
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
35
Issue
1-2
Year of publication
1995
Pages
45 - 56
Database
ISI
SICI code
1011-372X(1995)35:1-2<45:EOCAMD>2.0.ZU;2-P
Abstract
The oxidative dimerization of methane was investigated at 750-850 degr ees C in Li2CO3-Na2CO3-K2CO3 immobilized within LiAlO2 or Li2TiO3 supp orts. Catalytic performance was enhanced with moderate melt decarbonat ion (i.e. with molten phase/LiAlO2 at 850 degrees C: CH4 conversion of 25% and C-2 yield of 12.5%), then dramatically fell with the precipit ation of sodium and lithium oxide. The effect of the partial pressure of CO2 was analyzed. As in the case of binary carbonate eutectics, cat alytic activity of the ternary melt was correlated with the presence o f peroxide species. This activity was more important when using LiAlO2 support.