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TS-1 coated microreactor for selective oxidations

Paper ID Volume ID Publish Year Pages File Format Full-Text
39536 45826 2015 7 PDF Available
Title
TS-1 coated microreactor for selective oxidations
Abstract

•Describes a method for the incorporation of a TS-1 coating in a microreactor.•Transformation of a silica precoating to form a TS-1 coating.•The TS-1 coating has a high surface area, titanium loading with good stability.•Catalytically active in the epoxidation of propene.

A TS-1 catalyst layer has been coated inside a capillary microreactor by the transformation of a porous silica precoating using an in-situ hydrothermal synthesis method. The use of the silica precoating to favour TS-1 nucleation and growth on the microchannel surface has shown to provide a final TS-1 coating of high surface area and titanium loading with good stability. The ability to transform the silica precoating to a TS-1 coating was achieved by correctly balancing the silica precoating dissolution, zeolite nucleation and growth rates, and insertion of titanium into the zeolite framework. The 4 μm TS-1 coating, consisting of TS-1 crystals of approximately 800 nm in size, was applied in the epoxidation of propene as a model reaction to demonstrate its catalytic activity. The TS-1 microreactor obtained a propylene oxide productivity of 2 gPO/gcat h with a propylene oxide selectivity above 90%. Long-term stability tests of the TS-1 microreactor showed that the TS-1 coating is very stable with only a small deactivation noted over a 500 h time-on-stream period.

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Keywords
Zeolite; Coating; Microreactor; Propylene oxide
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TS-1 coated microreactor for selective oxidations
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 490, 25 January 2015, Pages 139–145
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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