EFFECT OF CARBON-DIOXIDE ON THE SELECTIVITIES OBTAINED DURING THE PARTIAL OXIDATION OF METHANE AND ETHANE OVER LI+/MGO CATALYSTS

被引：52

作者：

WANG, DJ

XU, MT

SHI, CL

LUNSFORD, JH

机构：

[1] Department of Chemistry, Texas A and M University, College Station, 77843, Texas

来源：

CATALYSIS LETTERS | 1993年 / 18卷 / 04期

关键词：

METHANE OXIDATION; ETHANE OXIDATION; METHYL RADICALS; LITHIUM MAGNESIUM OXIDE; CARBON DIOXIDE EFFECTS;

D O I：

10.1007/BF00765277

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：

At T less-than-or-equal-to 650-degrees-C carbon dioxide either formed during reaction or added to the system increases the selectivity for the desired hydrocarbon products during the oxidative coupling of methane and the oxidative dehydrogenation of ethane reaction over Li+/MgO catalysts. Similarly, CO2 inhibits secondary reactions of CH3.radicals with the surface of the Li+/MgO. The improved selectivities are attributed to the poisoning effect that CO2 has on the secondary reactions of alkyl radicals with the surface.

引用

页码：323 / 328

页数：6

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