HYDROGENATION OF METHYLACETYLENE OVER PLATINUM AND IRIDIUM CATALYSTS

被引:10
作者
MANN, RS
KHULBE, KC
机构
[1] Department of Chemical Engineering, University of Ottawa, Ottawa-2, Ont.
关键词
D O I
10.1021/j100727a002
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 reaction between methylacetylene and hydrogen over pumice-supported and unsupported platinum and iridium catalysts has been investigated in a static system for a wide range of reactant ratios between 20 and 150°. The order of reaction with respect to hydrogen was one and nearly temperature independent. While the order of reaction with respect to methylacetylene for unsupported iridium was zero and temperature independent, it was slightly negative and temperature dependent for all other catalysts. Selectivity was dependent on initial hydrogen pressure and temperature and independent of methylacetylene pressure. The over-all activation energies for platinum-pumice, platinum powder, iridium-pumice, and iridium powder were 12.4, 14.7, 8.6, and 6.2 kcal/mol, respectively.
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页码:2104 / &
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