Nanoporous Gold Catalysts for Selective Gas-Phase Oxidative Coupling of Methanol at Low Temperature
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- A. Wittstock
- Institute of Applied and Physical Chemistry, Universität Bremen, Bremen 28359, Germany.
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- V. Zielasek
- Institute of Applied and Physical Chemistry, Universität Bremen, Bremen 28359, Germany.
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- J. Biener
- Nanoscale Synthesis and Characterization Laboratory, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA
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- C. M. Friend
- Department of Chemistry, Harvard University, Cambridge, MA 02138, USA.
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- M. Bäumer
- Institute of Applied and Physical Chemistry, Universität Bremen, Bremen 28359, Germany.
書誌事項
- 公開日
- 2010-01-15
- DOI
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- 10.1126/science.1183591
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:title>Methanol Coupling Catalyzed with Gold</jats:title> <jats:p> Gold surfaces can be effective catalysts for partial oxidation reactions, in part because lower interaction strengths of molecules absorbed on gold allow products to desorb before further unwanted oxidations occur. One challenge in these reactions is the low rate of formation of reactive atomic surface oxygen. <jats:bold> Wittstock <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="319" related-article-type="in-this-issue" vol="327" xlink:href="10.1126/science.1183591">319</jats:related-article> ; see the Perspective by <jats:bold> <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="5963" page="278" related-article-type="in-this-issue" vol="327" xlink:href="10.1126/science.1184203">Christensen and Nørskov</jats:related-article> </jats:bold> ) created high–surface area gold catalysts by leaching silver from gold-silver alloys. This material proved to be an effective catalyst for partial oxidative coupling of methanol, yielding methyl formate. Residual silver appears to play a key role in activating the dissociation of molecular oxygen. </jats:p>
収録刊行物
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- Science
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Science 327 (5963), 319-322, 2010-01-15
American Association for the Advancement of Science (AAAS)