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  Structure-reactivity relationships in supported VOx catalysts for the oxyhydrative scission (OHS) of 1-butene and n-butane to acetic acid: A comprehensive catalytic and in situ study

Brückner, A., Bentrup, U., Fait, M., & Kubias, B. (2005). Structure-reactivity relationships in supported VOx catalysts for the oxyhydrative scission (OHS) of 1-butene and n-butane to acetic acid: A comprehensive catalytic and in situ study. Catalysis Today, 99(1-2), 123-129. doi:10.1016/j.cattod.2004.09.031.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-0A57-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-FA54-3
Genre: Journal Article

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Brückner, Angelika, Author
Bentrup, Ursula, Author
Fait, Martin, Author
Kubias, Bernd1, Author           
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: In situ-FTIR, operando-EPR, in situ-UV/vis-DRS, oxyhydrative scission, 1-butene, n-butane, vanadia-titania catalysts 8: Mixed V-W-Mo oxides for selective oxidation
 Abstract: A pure and an antimony-modified VOx/TiO2 catalyst have been catalytically tested in a total pressure range of 1-17 bar and studied by in situ-FTIR, in situ-UV/vis and operando-EPR spectroscopy at normal pressure in the oxyhydrative scission (OHS) of 1-butene and n-butane to acetic acid (AA). While 1-butene OHS follows the sequence butene  butoxide  ketone  acetate/AA with a multitude of trace side products also formed, n-butane OHS leads to AA, COx and H2O only. Adding water to the feed improves AA selectivity by favouring the hydrolysis of the ketone intermediate. Doping by Sb was found to improve AA selectivity being due, among other reasons, to deeper V reduction under steady state conditions. Activity in n-butane OHS decreases continuously with rising total pressure while both activity and selectivity in 1-butene OHS pass a maximum at 7 bar.

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Language(s): eng - English
 Dates: 2004-11-012005
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: eDoc: 204585
DOI: 10.1016/j.cattod.2004.09.031
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Title: Catalysis Today
  Alternative Title : Catal.Today
Source Genre: Journal
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Pages: - Volume / Issue: 99 (1-2) Sequence Number: - Start / End Page: 123 - 129 Identifier: -