Stabilization mechanism of supported metal catalyst

被引：0

作者：

Yang X. ^{[1
]}

Su X. ^{[1
]}

Yang X. ^{[1
]}

Huang Y. ^{[1
]}

Wang A. ^{[1
]}

Zhang T. ^{[1
]}

机构：

[1] Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning

来源：

Huagong Xuebao/CIESC Journal | 2016年 / 67卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Aggregation; Sintering; Stability; Stabilization mechanism; Stabilization strategy; Supported metal catalysts;

D O I：

10.11949/j.issn.0438-1157.20151556

中图分类号：

学科分类号：

摘要：

Supported metal catalysts play a pivotal role for many reactions in industrial processes, including petroleum refining, environmental protection and materials synthesis. However, the active metal centers suffer from severe sintering under real working condition, which will subsequently lead to a loss of its activity. Therefore, the stability of supported catalysts becomes a critical issue to its catalytic application. In this review, the aggregation and stabilization mechanisms of supported metal catalyst were briefly discussed according to the two different aggregation models of metal particles, i.e., Ostwald ripening and coalescence of smaller particles. Accordingly, the corresponding stabilization strategies, including physical methods based on encapsulation and chemical methods by forming chemical bonds, were introduced. The understanding of stabilization mechanism of supported metal catalyst would not only benefit for the development of new catalysts with promoted stability, but also provide theoretical guidance for the optimization of industrial catalysts. © All Right Reserved.

引用

页码：73 / 82

页数：9

共 82 条

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