EVAPORATION RATES AND SURFACE PROFILES ON HETEROGENEOUS SURFACES WITH MASS-TRANSFER AND SURFACE-REACTION

被引：16

作者：

FLYTZANI-STEPHANOPOULOS, M

SCHMIDT, LD

机构：

[1] Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis

来源：

CHEMICAL ENGINEERING SCIENCE | 1979年 / 34卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2509(79)85069-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Models incorporating surface reaction and diffusion of volatile products through a boundary layer are developed to calculate effective rates of evaporation and local surface profiles on surfaces having active and inactive regions. The coupling between surface heterogeneities with respect to a particular reaction and external mass transfer may provide a mechanism of the surface rearrangement and metal loss of catalysts encountered in several systems of practical interest. Calculated transport rates for the volatilization of Pt in oxidizing environments and the rearrangement of this metal during the ammonia oxidation reaction are found to agree well with experimental data. © 1979.

引用

页码：365 / 372

页数：8

共 20 条

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