Temperature effect on the photo-epoxidation of propylene over V-Ti/MCM-41 photocatalyst

Van Huy Nguyen, Jeffrey C.S. Wu*, Hsun-Ling Bai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The effect of reaction temperature on the gas-phase photocatalytic epoxidation of propylene was systematically studied over V-Ti/MCM-41 photocatalyst at different temperatures (298-393 K). Temperature significantly influences the product distribution of photo-epoxidation. Raising temperature is favorable towards the formation of propionaldehyde (PA) due to inhibition of PA transformation to propionic acid (C2H5COOH), the intermediate product of acetaldehyde (AA). Results indicated that the reaction temperature has a dual-action to the reaction rate: (1) improving the desorption of reaction products, which provides more active sites for reaction and (2) reducing the adsorption of propylene on the photocatalyst, which declines the reaction efficiency.

Original languageEnglish
Pages (from-to)57-60
Number of pages4
JournalCatalysis Communications
Volume33
DOIs
StatePublished - 5 Mar 2013

Keywords

  • Epoxidation
  • Photocatalysis
  • Propylene oxide
  • Temperature effect

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