Research Paper

Oxidation of a tensidic alcohol to its corresponding carboxylic acid via Au catalysts

  1. Katharina Heidkamp1,*,
  2. Nadine Decker1,
  3. Kerstin Martens1,
  4. Ulf Prüße1,
  5. Klaus-Dieter Vorlop1,
  6. Oliver Franke2,
  7. Achim Stankowiak2

Article first published online: 25 JAN 2010

DOI: 10.1002/ejlt.200900108

Issue

European Journal of Lipid Science and Technology

European Journal of Lipid Science and Technology

Special Issue: Oil and fats as renewable resources for the chemical industry

Volume 112, Issue 1, pages 51–57, No. 1 January 2010

Additional Information

How to Cite

Heidkamp, K., Decker, N., Martens, K., Prüße, U., Vorlop, K.-D., Franke, O. and Stankowiak, A. (2010), Oxidation of a tensidic alcohol to its corresponding carboxylic acid via Au catalysts. Eur. J. Lipid Sci. Technol., 112: 51–57. doi: 10.1002/ejlt.200900108

Author Information

  1. 1

    Institute of Agricultural Technology and Biosystems Engineering (AB), Johann Heinrich von Thunen-Institute (vTI), Braunschweig, Germany

  2. 2

    Clariant Produkte (Deutschland) GmbH, Burgkirchen, Germany

*Institute of Agricultural Technology and Biosystems Engineering (AB), Johann Heinrich von Thunen-Institute (vTI), Bundesallee 50, 38116 Braunschweig, Germany. Fax: +49-531-5964199

Publication History

  1. Issue published online: 25 JAN 2010
  2. Article first published online: 25 JAN 2010
  3. Manuscript Accepted: 28 JUL 2009
  4. Manuscript Received: 7 MAY 2009

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Keywords:

  • Ether carboxylic acid;
  • Fatty-alcohol ethoxylate;
  • Liquid-phase oxidation;
  • Supported gold catalyst

Abstract

The oxidation of the fatty-alcohol ethoxylate GENAPOL LA 050 to its corresponding ether carboxylic acid using supported Au catalysts under mild aerobic conditions in aqueous alkaline solution was investigated. Screening of different metal oxide supports and several preparation methods yielded an assortment of highly selective catalysts with varying activities. AEROXIDE® TiO2 P25 turned out to be the most suitable support and deposition-precipitation with urea emerged as the best-suited preparation method. Further experiments with this catalyst displayed the dependency of the catalytic activity on reaction parameters such as temperature, pressure and reactant/catalyst ratio. The long-term stability study of this particular catalyst in repeated batches revealed catalyst deactivation by Au particle agglomeration due to intermediate Au leaching under the reaction conditions.

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