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Cleavage of the C–O–C bond on size-selected subnanometer cobalt catalysts and on ALD-cobalt coated nanoporous membranes

Paper ID Volume ID Publish Year Pages File Format Full-Text
41738 45899 2011 7 PDF Available
Title
Cleavage of the C–O–C bond on size-selected subnanometer cobalt catalysts and on ALD-cobalt coated nanoporous membranes
Abstract

The cleavage of the C–O–C bond was studied under oxidizing conditions on nanostructured membrane supported cobalt-based catalysts using a cellulose model surrogate, 1-methoxy-2-methyl-2-propanol. The cobalt catalysts were found to break the C–O–C bond, producing alcohols and/or ketones by further oxidation. The size-selected sub-nanometer size cobalt clusters exhibited a per metal activity of up to 5 orders of magnitude higher than the with atomic layer deposition uniformly coated membranes. The large difference in activity is attributed to the high fraction of the surface atoms of the subnanometer clusters. The positioning of the clusters at the entrance vs. exit of the catalytic membrane allows for a control of the contact time and consequently of the selectivity of the catalyst.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (91 K)Download as PowerPoint slideResearch highlights▶ A new route to breakdown cellulosic materials by catalytic oxidative hydrolysis. ▶ Co sub-nanometer are much active than nanometer cobalt oxide for the C–O–C cleavage. ▶ Co clusters position vs. gas flow direction dictates the selectivity of the products.

Keywords
Oxidative decomposition; Cellulose; C–O–C bond cleavage; Size-selected clusters; Cobalt; Anodized aluminum oxide; Atomic layer deposition
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Cleavage of the C–O–C bond on size-selected subnanometer cobalt catalysts and on ALD-cobalt coated nanoporous membranes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 393, Issues 1–2, 15 February 2011, Pages 29–35
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
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