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Dehydrogenation of propane with selective hydrogen combustion: A mechanistic study by transient analysis of products

Paper ID Volume ID Publish Year Pages File Format Full-Text
50624 46805 2010 4 PDF Available
Title
Dehydrogenation of propane with selective hydrogen combustion: A mechanistic study by transient analysis of products
Abstract

The role of lattice and adsorbed oxygen species in propane dehydrogenation in a perovskite hollow fiber membrane reactor containing a Pt–Sn dehydrogenation catalyst was elucidated by transient analysis of products with a sub-millisecond time resolution. Propane is mainly dehydrogenated non-oxidatively to propene and hydrogen over the catalyst, while lattice oxygen of the perovskite oxidizes preferentially hydrogen to water. For achieving high propene selectivity at high propane conversions, the formation of gas phase O2 on the shell side of the membrane reactor should be avoided. Otherwise, oxygen species adsorbed over the Pt–Sn catalyst participate in non-selective C3H8/C3H6 transformations to C2H4 and COx.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights►Role of oxygen species in propane dehydrogenation in a perovskite membrane reactor was elucidated.►Transient analysis of reaction products with a sub-millisecond time resolution.►Propane is mainly dehydrogenated non-oxidatively to propene and hydrogen over Pt-Sn catalyst.►Lattice oxygen of perovskite oxidizes preferentially hydrogen compared to propane.

Keywords
TAP reactor; Pt catalyst; Mechanism; Membrane reactor; Oxidative dehydrogenation; Propane dehydrogenation; Oxygen transporting membrane; Perovskites
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Dehydrogenation of propane with selective hydrogen combustion: A mechanistic study by transient analysis of products
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 15, 25 September 2010, Pages 1211–1214
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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