Mass transfer limitations in a monolithic reactor for the catalytic oxidation of ethanol

被引：10

作者：

Rodriguez, M. L. ^{[1
]}

Cadus, L. E. ^{[1
]}

机构：

[1] INTEQUI UNLS CONICET, Chacabuco Y Pedernera, San Luis, Argentina

来源：

CHEMICAL ENGINEERING SCIENCE | 2016年 / 143卷

关键词：

Catalytic oxidation; Monolithic reactor; Heterogeneous model; Mass transfer; Ethanol; VOLATILE ORGANIC-COMPOUNDS; COMBUSTION; AIR;

D O I：

10.1016/j.ces.2015.12.010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A theoretical study of a monolithic reactor for the catalytic oxidation of Volatile Organic Compounds (VOC) over manganese-copper mixed oxide catalysts is presented. An isothermal one-dimensional heterogeneous model is selected to account for the external (gas-solid) and internal (washcoat) mass transport limitations. The results reveal that under certain operating conditions, e.g. thick washcoats and high conversions of VOCs (high temperatures), the overall process rate is reduced by internal diffusion inside the catalyst. At high temperatures and/or monoliths with poor interfacial areas, the overall process rate is limited by external mass transfer resistance to the catalyst. Proper quantification of both internal and external mass transfer resistances by means of a heterogeneous model can result in avoiding situations of incomplete VOC abatement under conditions of high VOC dilution. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：305 / 313

页数：9

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