OXIDATIVE COUPLING OF METHANE BY PYROCHLORE OXIDE A2B2O7 (A = RARE-EARTH, B = TI, ZR, SN) - RELATION BETWEEN C-2 SELECTIVITY AND B-O BOND-ENERGY

被引：35
作者：
PETIT, C
REHSPRINGER, JL
KADDOURI, A
LIBS, S
POIX, P
KIENNEMANN, A
机构：
[1] EHICS,CHIM ORGAN APPL LAB,URA 469,F-67008 STRASBOURG,FRANCE
[2] EHICS,IPCMS,GMI,F-67008 STRASBOURG,FRANCE
来源：
CATALYSIS TODAY | 1992年 / 13卷 / 2-3期
关键词：
D O I：
10.1016/0920-5861(92)80166-K
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The study of the reactivity of A2B2O7 pyrochlore type structures (A = rare earth, B = Ti, Zr, Sn) has shown the strong influence of the B cocation on the C2 selectivity and yield in the oxidative coupling of methane. This has been related to the B-0 bond energy of the structure constituting elements and it has been found that a high C2 yield corresponds to low bonding energy (e.g. for Sn-0). The ability to create oxygen vacancies which can be involved in the reaction mechanism has been illustrated by these studies (reactivity, bonding energy calculation).
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页码：409 / 416
页数：8
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