Synthesis of Ni−SiO2/Silicalite-1 Core−Shell Micromembrane Reactors and Their Reaction/Diffusion Performance

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• 作者：Easir A. Khan ; Arvind Rajendran ; Zhiping Lai
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2010
• 出版时间：December 15, 2010
• 年：2010
• 卷：49
• 期：24
• 页码：12423-12428
• 全文大小：190K
• 年卷期：v.49,no.24(December 15, 2010)
• ISSN：1520-5045

文摘

Core−shell micromembrane reactors are a novel class of materials where a catalyst and a shape-selective membrane are synergistically housed in a single particle. In this work, we report the synthesis of micrometer -sized core−shell particles containing a catalyst core and a thin permselective zeolite shell and their application as a micromembrane reactor for the selective hydrogenation of the 1-hexene and 3,3-dimethyl-1-butene isomers. The bare catalyst, which is made from porous silica loaded with catalytically active nickel, showed no reactant selectivity between hexene isomers, but the core−shell particles showed high selectivities up to 300 for a 1-hexene conversion of 90%.