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论文类型：期刊论文

发表时间：2011-05-01

发表刊物：ACS CATALYSIS

收录刊物：Scopus、SCIE、EI

卷号：1

期号：5

页面范围：437-445

ISSN号：2155-5435

关键字：TS-1 packing rings; film; contact area; styrene oxidation

摘要：Titanium silicalite-1 (TS-1)-coated on stainless steel packing rings of complex geometries provided a large interfacial contact area for improving mass transport processes. Zeolite seeds were assembled using organic linker, and a thin uniform layer of TS-1 catalyst was deposited on the surface by hydrothermal regrowth. The chemical, structural, and catalytic properties of the TS-1 layer were examined. An order of magnitude higher styrene conversion rate was obtained from the TS-1-coated substrates compared with powder. The catalyst was sensitive to pretreatment, and heat treatment in nitrogen provided a 30% higher conversion rate than the air-calcined samples. The N(2)-pretreated catalyst displayed lower activity loss and better regenerability.