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Ordered mesoporous Ga2O3 and Ga2O3–Al2O3 prepared by nanocasting as effective catalysts for propane dehydrogenation in the presence of CO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
50139 46781 2013 6 PDF Available
Title
Ordered mesoporous Ga2O3 and Ga2O3–Al2O3 prepared by nanocasting as effective catalysts for propane dehydrogenation in the presence of CO2
Abstract

Thermally stable mesoporous gallium and gallium–aluminum (atomic ratio of Ga/Al = 4/1 and 1/4) oxides with controlled textural and structural properties were prepared by means of the nanocasting approach. All materials have uniform micron-sized particles, with a quite narrow pore-size distribution centered in the range of 6.2–6.5 nm and specific surface areas as high as 231–322 m2·g− 1. Pure mesoporous gallium and gallium–aluminum (Ga/Al = 4:1) oxides exhibit a promising catalytic performance in the dehydrogenation of propane to propene in the presence of CO2 (DHP-CO2). Over the most active materials, during 4 h on stream at 823 K, propene was produced with the yield of 10–18% and high selectivity of 91–95%. Moreover, pure mesoporous gallium oxide exerted a higher resistance on deactivation during the DHP-CO2 process in comparison with gallium oxide prepared without a hard template.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ordered mesoporous Ga and Ga–Al oxides are prepared by nanocasting using CMK-3 as hard template. ► All prepared mesoporous materials exhibit high thermal stability. ► Ga-rich catalysts are active and selective in dehydrogenation of propane with CO2. ► Propene yield increases with the rise of Ga/Al ratio in the catalyst.

Keywords
Nanocasting; Gallium oxide; Dehydrogenation; Carbon dioxide; Propene
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Ordered mesoporous Ga2O3 and Ga2O3–Al2O3 prepared by nanocasting as effective catalysts for propane dehydrogenation in the presence of CO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 35, 5 May 2013, Pages 95–100
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us