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The influence of water on the selective oxidation of acrolein to acrylic acid on Mo/V/W-mixed oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
50773 46813 2012 4 PDF Available
Title
The influence of water on the selective oxidation of acrolein to acrylic acid on Mo/V/W-mixed oxides
Abstract

The influence of water on the selective gas phase oxidation of acrolein to acrylic acid on Mo/V/W-mixed oxides was investigated by means of temperature-programmed experiments. In the presence of water, the rate of the acrylic acid formation is significantly pronounced. Selectivity- and yield-maxima are broadened and shifted towards lower temperatures. Nonetheless, the combustion remains unaffected. Furthermore, the catalysts stability remains likewise unaffected within the range of the experiments.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Spray dried Mo-V-W-mixed oxides are good model catalysts in the oxidation of acrolein. ► Additional water in the feed enhances the catalyst’s performance dramatically. ► Water increases the selectivity and shifts the maximum to a lower temperature. ► The total oxidation and the catalysts stability remain unaffected. ► Water may generate additional oxidation-sites active in the temperature range around 250–400 °C.

Keywords
Acrolein oxidation; Water; Mo/V/W-mixed oxides; Heterogeneous catalysis; Transient experiments; Acrylic acid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 20, 5 April 2012, Pages 25–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Full-text PDF Download
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