A GAS-SOLID REACTION WITH NONUNIFORM DISTRIBUTION OF SOLID REACTANT

被引：4

作者：

DASSORI, CG ^{[1
]}

TIERNEY, JW ^{[1
]}

SHAH, YT ^{[1
]}

机构：

[1] UNIV PITTSBURGH,DEPT CHEM & PETR ENGN,PITTSBURGH,PA 15261

来源：

AICHE JOURNAL | 1988年 / 34卷 / 11期

关键词：

Alumina - Surfaces - Chemical Reactions - Reaction Kinetics - Copper Compounds - Solids - Structure;

D O I：

10.1002/aic.690341113

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A pore-pellet model is used to analyze experimental data for SO2 removal using CuO impregnated on alumina as a sorbent. The effect of structural changes in the active solid (CuO) is included in the analysis and found to be important. The changes are characterized by three parameters: the ratio of solid product (CuSO4) molal volume to solid reactant (CuO) molal volume, the weight fraction of active solid, and the radial distribution of the active solid within the pellet. The calculated kinetic constants are independent of CuO weight fraction and can be used for pellets with different CuO weight fractions. It is shown that some degree of nonuniformity in the CuO distribution within the alumina matrix is needed in order to obtain a good fit of the data by the model.

引用

页码：1878 / 1886

页数：9

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