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  Prevention of Catalyst Deactivation in the Hydrogenolysis of Glycerol by Ga2O3-Modified Copper/Zinc Oxide Catalysts

Bienholz, A., Blume, R., Knop-Gericke, A., Girgsdies, F., Behrens, M., & Claus, P. (2011). Prevention of Catalyst Deactivation in the Hydrogenolysis of Glycerol by Ga2O3-Modified Copper/Zinc Oxide Catalysts. The Journal of Physical Chemistry C, 115(4), 999-1005. doi:10.1021/jp104925k.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-0E36-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-FAA8-F
Genre: Journal Article

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 Creators:
Bienholz, Arne1, Author
Blume, Raoul2, Author              
Knop-Gericke, Axel2, Author              
Girgsdies, Frank2, Author              
Behrens, Malte2, Author              
Claus, Peter1, Author
Affiliations:
1Ernst-Berl-Institut, Technische Chemie II, Technische Universität Darmstadt, Petersenstr. 20, D-64287 Darmstadt, Germany, ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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 Abstract: Copper/zinc oxide catalysts prepared by coprecipitation were proved to be highly active and selective in the hydrogenolysis of glycerol. However, they suffer from strong deactivation in the course of reaction. Modifying the CuO/ZnO catalyst with Ga2O3 extremely enhances the stability of the catalyst as even after four consecutive experiments over a Cu/ZnO/Ga2O3 catalyst no deactivation is observed. The catalysts were characterized by temperature-programmed reduction, powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray analysis, and inductively coupled plasma optical emission spectrometry. As the Cu/ZnO/Ga2O3 catalyst is stable even under harsh reaction conditions of 220 °C and in the presence of water, a space-time-yield as high as 22.1 gpropylene glycol/(gCu h) can be obtained.

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Language(s): eng - English
 Dates: 2010-10-152011
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/jp104925k
 Degree: -

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Title: The Journal of Physical Chemistry C
  Other : J. Phys. Chem. C
Source Genre: Journal
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Publ. Info: Washington DC : American Chemical Society
Pages: - Volume / Issue: 115 (4) Sequence Number: - Start / End Page: 999 - 1005 Identifier: ISSN: 1932-7447
CoNE: /journals/resource/954926947766