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Catalysis for Sustainable Energy

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Carbonylation of Dimethyl Ether on Ag/ Cs1.5H1.5PW12O40: In-Situ FTIR Spectroscopy Study of the Ag-Carbonyls

G.G. Volkova
  • Corresponding author
  • Boreskov Institute of Catalysis, pr.Akademika Lavrentieva, 5, 630090, Novosibirsk, Russian Federation
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  • De Gruyter OnlineGoogle Scholar
/ E.A. Paukshtis
  • Boreskov Institute of Catalysis, pr.Akademika Lavrentieva, 5, 630090, Novosibirsk, Russian Federation
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2017-12-29 | DOI: https://doi.org/10.1515/cse-2017-0009

Abstract

Halide-free carbonylation of dimethyl ether (DME) to methyl acetate over heterogeneous catalysts offers a potentially green route to the production of important industrial chemicals. Previously we have shown that the addition of 1% of silver to Cs1.5H1.5PW12O40 led to an increase in activity by a factor of two. Formation of silver carbonyl clusters on the surface of the catalyst was demonstrated by in situ FTIR spectroscopy. The v(CO) of silver carbonyl was observed at 2188 cm-1 and may be explained by the formation of cationic silver carbonyl Ag(CO)+ on the surface of the acidic cesium salt of 12-tungstophosphoric acid. In view of the increased efficiency, the novel bifunctional catalyst Ag/ Cs1.5H1.5PW12O40 is expected to hold significant promise for practical use in new processes of basic organic chemistry.

Keywords: carbonylation; dimethyl ether; acidic cesium salt of 12-tungstophosphoric acid; in situ FTIR spectroscopy; silver carbonyl

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About the article

Received: 2017-11-23

Accepted: 2017-12-06

Published Online: 2017-12-29

Published in Print: 2018-01-01


Citation Information: Catalysis for Sustainable Energy, Volume 4, Issue 1, Pages 59–61, ISSN (Online) 2084-6819, DOI: https://doi.org/10.1515/cse-2017-0009.

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