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

被引：1

作者：

CASSIR, M ^{[1
]}

TASHJIAN, V ^{[1
]}

DEVYNCK, J ^{[1
]}

MOYAUX, D ^{[1
]}

CLAES, P ^{[1
]}

机构：

[1] UNIV CATHOLIQUE LOUVAIN,DEPT CHEM,B-1348 LOUVAIN,BELGIUM

来源：

CATALYSIS LETTERS | 1995年 / 35卷 / 1-2期

关键词：

OXIDATIVE COUPLING OF METHANE; METHANE DIMERIZATION; C-2 HYDROCARBONS YIELD; C-2 HYDROCARBONS SELECTIVITY; CH4; CONVERSION; SUPPORTED MOLTEN CARBONATE CATALYST; LITHIUM ALUMINATE; LITHIUM TITANATE; LITHIUM-SODIUM-POTASSIUM EUTECTIC;

D O I：

10.1007/BF00807003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The oxidative dimerization of methane was investigated at 750-850 degrees C in Li2CO3-Na2CO3-K2CO3 immobilized within LiAlO2 or Li2TiO3 supports. Catalytic performance was enhanced with moderate melt decarbonation (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 precipitation of sodium and lithium oxide. The effect of the partial pressure of CO2 was analyzed. As in the case of binary carbonate eutectics, catalytic activity of the ternary melt was correlated with the presence of peroxide species. This activity was more important when using LiAlO2 support.

引用

页码：45 / 56

页数：12

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