Gas phase hydrogen spillover and oxygen content

被引：9

作者：

Baumgarten, E ^{[1
]}

Krupp, R ^{[1
]}

机构：

[1] Univ Dusseldorf, Abt Angew Phys Chem, Inst Phys Chem & Elektrochem, D-4000 Dusseldorf, Germany

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2000年 / 70卷 / 01期

关键词：

gas phase hydrogen spillover; indirect catalysis;

D O I：

10.1023/A:1010394111750

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 specially constructed all-glass reaction system was used to reinvestigate hydrogen spillover through the gas phase with extremely purified hydrogen, using alkene hydrogenations in the gas phase as test reactions. The spillover reaction could he observed even with hydrogen - with less than 0.01 ppm O-2 - which additionally was passed over the same type of Pt/Al2O3, catalyst at the beginning of the line, in a second group of experiments the effect of oxygen traces was investigated, which were added to the hydrogen stream. Small oxygen contents (less than or equal to 50 ppm) did not influence the reaction, higher contents (greater than or equal to 100 ppm) caused reduced conversion.

引用

页码：27 / 33

页数：7