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Pore Condensation in Glycerol Dehydration: Modification of a Mixed Oxide Catalyst.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0002-4162-3680
Dep. Chemical Engineering, Lund University .
Biofuel-Solution AB, Tygelsjö, Sweden.
2017 (English)In: Topics in catalysis, ISSN 1022-5528, E-ISSN 1572-9028Article in journal (Refereed) Epub ahead of print
Abstract [en]

Pore condensation has been suggested as an initiator of deactivation in the dehydration of glycerol to acrolein. To avoid potential pore condensation of the glycerol, a series of WO3supported on ZrO2 catalysts have been prepared through thermal sintering, with modified pore systems. It was shown that catalysts heat treated at temperatures above 800 °C yielded suitable pore system and the catalyst also showed a substantial increase in acrolein yield. The longevity of the heat-treated catalysts was also improved, indeed a catalyst heat treated at 850 °C displayed significantly higher yields and lower pressure-drop build up over the 600 h of testing. Further, the catalyst characterisation work gave evidence for a transition from monoclinic to triclinic tungsten oxide between 850 and 900 °C. There is also an increase in acid-site concentration of the heat-treated catalysts. Given the improved catalyst performance after heat-treatment, it is not unlikely that pore condensation is a significant contributing factor in catalyst deactivation for WO3 supported on ZrO2 catalysts in the glycerol dehydration reaction.

Place, publisher, year, edition, pages
Springer, 2017.
Keyword [en]
Glycerol, Pore Condensation, Dehydration, Acrolein, Deactivation
National Category
Chemical Process Engineering
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-65539DOI: 10.1007/s11244-017-0827-8OAI: oai:DiVA.org:lnu-65539DiVA: diva2:1111596
Conference
17th Nordic Symposium of Catalysis.
Available from: 2017-06-19 Created: 2017-06-19 Last updated: 2017-06-19

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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