ENTROPIES OF ADSORPTION IN HETEROGENEOUS CATALYTIC REACTIONS

被引：154

作者：

VANNICE, MA

HYUN, SH

KALPAKCI, B

LIAUH, WC

机构：

[1] Department of Chemical Engineering, The Pennsylvania State University, University Park

来源：

JOURNAL OF CATALYSIS | 1979年 / 56卷 / 03期

关键词：

D O I：

10.1016/0021-9517(79)90128-3

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：

Langmuir-Hinshelwood (or Hougen-Watson) rate expressions are frequently used to correlate kinetic data. The equilibrium adsorption constants contained in these equations can be utilized to abstract values for standard enthalpies and entropies of adsorption. By using limiting, model cases to describe dissociative, dual-site adsorption, we have shown that the values obtained for ΔSa0 must conform to certain rules in order to have any physical meaning and thereby support the proposed reaction model. Rules proposed earlier by Boudart, Mears, and Vannice for nondissociative adsorption have also been found to be applicable to dissociative adsorption. © 1979.

引用

页码：358 / 362

页数：5

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