Preparation, structure and performance of TS-1 zeolite-coated Au–Pd/TiO2–SiO2 capsule catalyst for propylene epoxidation with oxygen and hydrogen

A compact zeolite membrane of TS-1 was crystallized on the surface of Au–Pd/TiO 2 –SiO 2 catalyst pellets by a hydrothermal synthesis method. The synthesized capsule catalyst has a core–shell structure without pinholes and cracks. For the reaction of propylene epoxidation using oxygen and hydrogen,...

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Published inResearch on chemical intermediates Vol. 37; no. 2-5; pp. 177 - 184
Main Authors Jin, Quan, Bao, Jun, Sakiyama, Hiroki, Tsubaki, Noritatsu
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.04.2011
Subjects
Catalysis
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Physical Chemistry
Propylene oxide
Capsule catalyst
Propylene epoxidation
Core–shell structure
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Summary:A compact zeolite membrane of TS-1 was crystallized on the surface of Au–Pd/TiO 2 –SiO 2 catalyst pellets by a hydrothermal synthesis method. The synthesized capsule catalyst has a core–shell structure without pinholes and cracks. For the reaction of propylene epoxidation using oxygen and hydrogen, the synthesized capsule catalyst shows much higher propylene conversion and PO yield than those of the conventional physically mixed catalyst with the same composition. The core–shell capsule catalyst provides a tailor-made confined reaction environment, which can be extended to various consecutive reactions as the shell and core components are independent catalysts of different reactions.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-011-0264-4