METHANE OXIDATIVE COUPLING ON BAF2/LAOF CATALYST

被引：17

作者：

CHAO, ZS ^{[1
]}

ZHOU, XP ^{[1
]}

WAN, HL ^{[1
]}

TSAI, KR ^{[1
]}

机构：

[1] XIAMEN UNIV,STATE KEY LAB PHYS CHEM SOLID SURFACE,XIAMEN 361005,PEOPLES R CHINA

来源：

APPLIED CATALYSIS A-GENERAL | 1995年 / 130卷 / 02期

基金：

中国国家自然科学基金;

关键词：

METHANE OXIDATIVE COUPLING; METAL OXYFLUORIDE; ANION VACANCIES; TRAPPED ELECTRONS;

D O I：

10.1016/0926-860X(95)00116-6

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 coupling of methane (OCM) was studied on BaF2/LaOF and good catalytic results were obtained. Under the conditions of GHSV = 15 000 h(-1) and a reaction temperature of 1043 K, a C-2 yield of 20.66% with a CH4 conversion of 33.08% and a C-2 selectivity of 62.47% was achieved at CH4:O-2 = 3:1, and high C-2 selectivities of 81.20% and 84.55% with a CH4 conversion of 19.53% and 16.54% were obtained at CH4:O-2 ratios of 6:1 and 9:1, respectively. X-ray diffraction results showed that only tetragonal LaOF existed in the BaF2/LaOF catalysts with BaF2 content below 18 mol-%, but a contracted BaF2 phase was also observed at higher BaF2 content (above 18 mol-%).

引用

页码：127 / 133

页数：7

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