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Cu/ZnO-based water–gas shift catalysts in shut-down/start-up operation

Paper ID Volume ID Publish Year Pages File Format Full-Text
51346 46839 2009 5 PDF Available
Title
Cu/ZnO-based water–gas shift catalysts in shut-down/start-up operation
Abstract

The water–gas shift performances of Cu/ZnO and Cu/ZnO/Al2O3 catalysts in the challenging shut-down/start-up operation were investigated. The Cu/ZnO catalyst showed comparable activity to the Cu/ZnO/Al2O3 catalyst but better stability in shut-down/start-up cycles, although the latter had much higher Cu surface area and smaller Cu crystallite size. The Cu–ZnO interface sites were thus suggested to participate directly in the reaction. Based on the characterizations, the deactivation of the Cu/ZnO/Al2O3 catalyst was mainly attributed to the loss of active sites due to the formation of carbonate species rather than the sintering of Cu crystallites.

Keywords
Cu/ZnO; Cu/ZnO/Al2O3; Water–gas shift; Shut-down/start-up operation; Stability
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 8, 30 March 2009, Pages 1252–1256
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
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