DIFFUSE REFLECTANCE FOURIER-TRANSFORM IR STUDIES ON THE ROLE OF CATALYST SUPPORT ON SELECTIVITY IN ETHENE OXIDATION

被引:14
作者
CONNOR, PT [1 ]
KOVENKLIOGLU, S [1 ]
SHELLY, DC [1 ]
机构
[1] STEVENS INST TECHNOL LIB, DEPT CHEM & CHEM ENGN, HOBOKEN, NJ 07030 USA
来源
APPLIED CATALYSIS | 1991年 / 71卷 / 02期
关键词
SILVER ALUMINA; ETHYLENE OXIDE; ETHENE OXIDATION; FOURIER-TRANSFORM IR; CATALYST CHARACTERIZATION (FT-IR);
D O I
10.1016/0166-9834(91)85083-8
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
Infrared spectroscopy (DRIFTS) was used to study the role of adsorption on the support material on the selectivity to ethylene oxide in ethylene oxidation. With silver catalysts supported on high surface area alumina, no selectivity to ethylene oxide was observed. DRIFTS studies also showed that significant ethylene adsorption on the alumina support was occurring. Further studies on the high surface area alumina support indicated that hydroxyl groups play a major role in ethylene adsorption on the support. With catalysts where there was no evidence of ethylene adsorption on the support, such as silver on low surface area alumina and silver on silica, ethylene oxide was formed.
引用
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页码:247 / 263
页数:17
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