The Distribution of Active ingredients in Supported Catalysts Prepared by Impregnation
作者:
Sheng-Yi Lee,
Rutherford Aris,
期刊:
Catalysis Reviews
(Taylor Available online 1985)
卷期:
Volume 27,
issue 2
页码: 207-340
ISSN:0161-4940
年代: 1985
DOI:10.1080/01614948508064737
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Supported catalysts, one of the commonest forms of heterogeneous catalysts in practical use, consist of small crystallites of a catalytically active component dispersed in a porous support of high surface area. Impregnation of the support with an aqueous solution of a compound containing the appropriate catalytic component is an important and frequently used method of preparing this type of catalyst. A nonaqueous solution should be used if the sup port surface is hydrophobic or if hydrolysis of the support surface is to be avoided. In its simplest form, this impregnation method involves three steps: (1) contacting the support with impregnating solution for a certain period of time, (2) drying the support to remove the imbibed liquid, and (3) activating the catalyst by calcination, reduction, or other appropriate treatment.
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