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Hydrogen production by oxidative methanol reforming on Pd/ZnO: Catalyst deactivation

Paper ID Volume ID Publish Year Pages File Format Full-Text
44181 46007 2006 8 PDF Available
Title
Hydrogen production by oxidative methanol reforming on Pd/ZnO: Catalyst deactivation
Abstract

The durability performance of Pd/ZnO for oxidative methanol reforming has been investigated. While Cu/ZnO lost its activity with a constant selectivity of CO formation, Pd/ZnO exhibited a more stable activity, but with increasing CO production throughout the reaction time on stream. Characterization of the catalyst using XRD and XPS revealed the formation of a Pd–Zn alloy, which was thought to be essential for the selective production of hydrogen. Based on the reaction and the catalyst characterization results, two routes were supposed for the deactivation of Pd/ZnO catalyst: surface fouling by deposited carbon and surface oxidation of the Pd–Zn alloy, breaking down the Pd–Zn alloy to produce more elemental Pd on a ZnO support. The catalyst can be regenerated in a H2 reducing atmosphere at higher temperatures and in a diluted O2 atmosphere at lower temperatures.

Keywords
Catalyst deactivation; Hydrogen production; Oxidative steam reforming; Methanol; Palladium; Zinc oxide
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Hydrogen production by oxidative methanol reforming on Pd/ZnO: Catalyst deactivation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 299, 17 January 2006, Pages 58–65
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
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