OXIDATIVE COUPLING OF METHANE OVER BA/CAO CATALYSTS - A COMPARISON WITH LI/MGO

被引:33
作者
KORF, SJ
ROOS, JA
DERKSEN, JWHC
VREEMAN, JA
VANOMMEN, JG
ROSS, JRH
机构
[1] Faculty of Chemical Technology, University of Twente, 7500 AE Enschede
来源
APPLIED CATALYSIS | 1990年 / 59卷 / 02期
关键词
D O I
10.1016/S0166-9834(00)82205-8
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
A comparison has been made of the behaviour in the oxidative coupling of methane of a Ba/CaO catalyst with that of a Li/MgO material. Doping of CaO with BaCO3 resulted in a catalyst which is more active at lower reaction temperatures than is BaCO3. The active oxygen entity in the case of Ba/CaO is probably an O2-2 species. Ba/CaO is more stable but less selective than is Li/MgO. The effect of residence time was studied for both Ba/CaO and Li/MgO. The direct oxidation of methyl radicals to give carbon monoxide and carbon dioxide plays a more important role in the case of Ba/CaO than is the case with Li /MgO. © 1990.
引用
收藏
页码:291 / 309
页数:19
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