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  Structure–reactivity relationships in VOx/TiO2 catalysts for the oxyhydrative scission of 1-butene and n-butane to acetic acid as examined by in situ-spectroscopic methods and catalytic tests

Bentrup, U., Brückner, A., Fait, M., Kubias, B., & Stelzer, J. B. (2006). Structure–reactivity relationships in VOx/TiO2 catalysts for the oxyhydrative scission of 1-butene and n-butane to acetic acid as examined by in situ-spectroscopic methods and catalytic tests. Catalysis Today, 112(1-4), 78-81. doi:10.1016/j.cattod.2005.11.023.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-06A8-0 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-E5CE-1
Genre: Journal Article

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

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Free keywords: Mixed V-W-Mo oxides for selective oxidation
 Abstract: Different VOx/TiO2 catalyst have been catalytically tested and studied by in situ-spectroscopic methods (FT-IR, UV/vis, EPR) in the oxyhydrative scission (OHS) of 1-butene and n-butane to acetic acid (AcOH). While 1-butene OHS follows the sequence butane → butoxide → ketone → AcOH/acetate with a multitude of side products also formed, n-butane OHS leads to AcOH, COx and H2O only. Water vapour in the feed improves AcOH selectivity by blocking adsorption sites for acetate. The admixture of Sb2O3 was found to improve AcOH selectivity which is due to deeper V reduction under steady state conditions and lowering of surface acidity. VOx/TiO2 catalysts with sulfate-containing anatase are the most effective ones. Covalently bonded sulfate at the catalyst surface causes specific bonding of VOx, stabilizes active V species and ensures their high dispersity.

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Language(s): eng - English
 Dates: 2006
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: eDoc: 313253
DOI: 10.1016/j.cattod.2005.11.023
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Title: Catalysis Today
Source Genre: Journal
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Pages: - Volume / Issue: 112 (1-4) Sequence Number: - Start / End Page: 78 - 81 Identifier: -