EFFECT OF HYDROGENATION CATALYST ACTIVITY ON ADSORPTION AND SURFACE-REACTION RATES

被引：16

作者：

CHEN, SY

SMITH, JM

MCCOY, BJ

机构：

[1] Univ of California, Davis, CA, USA, Univ of California, Davis, CA, USA

来源：

CHEMICAL ENGINEERING SCIENCE | 1987年 / 42卷 / 02期

基金：

美国国家科学基金会;

关键词：

ADSORPTION - CATALYSTS - Palladium Compounds - CHEMICAL EQUIPMENT - Reactors - HYDROGEN;

D O I：

10.1016/0009-2509(87)85059-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Dynamic studies of the hydrogenation of alpha -methyl styrene in a three-phase slurry reactor showed that catalyst reduction temperature appreciably affects individual values of adsorption equilibrium constants, adsorption rate coefficients and surface reaction rate coefficients. Measurements were made in a well-stirred slurry reactor with Pd/Al//2O//3 catalyst particles at 22, 38 and 50 degree C. Increasing the temperature for reducing, in hydrogen, PdCl//2 to Pd from 250 to 420 to 510 degree C decreased the palladium dispersion, and caused a reduction in equilibrium adsorption, adsorption rate and surface reaction rate coefficients. The heat of adsorption and the activation energy for surface reaction, 3. 8 and 10 kcal/mole, respectively, were constant with reduction temperature.

引用

页码：293 / 306

页数：14

共 24 条

[1] SEPARATION OF ADSORPTION AND SURFACE-REACTION RATES - DYNAMIC STUDIES IN A CATALYTIC SLURRY REACTOR [J].