Paper Title:
Photocatalytic Oxidation and Decomposition of Acetic Acid over TiO2, TS-1 and Ti-MCM-41 Catalysts
  Abstract

Transient reaction of adsorbed monolayer of acetic acid was used to compare the photocatalytic properties of TiO2 (Degussa P-25), titanium silicalite (TS-1) and Ti-MCM-41. TS-1 and Ti-MCM-41 catalysts with Si/Ti ratio of 50 were prepared by in-situ crystallization. The catalysts were characterized using XRD and UV-DRS. During photocatalytic oxidation (PCO), CO2 and HCHO were formed on P-25 TiO2, whereas CO2 and CH4 formed on TS-1 and Ti-MCM-41. Acetic acid decomposed photocatalytically on P-25 TiO2 to form CO2, CH4 and C2H6. On the contrary, CO2 and CH4 were formed on TS-1 and Ti-MCM-41 during photocatalytic decomposition (PCD). The rates of product formation during PCD were lower than PCO. The TS-1 and Ti- MCM-41 catalysts were less active per gram of catalyst. However, the TS-1 and Ti-MCM-41 catalysts had much higher adsorption capacities for organics. Therefore, it seems that the TS-1 and Ti-MCM-41 catalysts have some advantages in applications to PCO of organic comtaminants under conditions where the organic concentrations vary widely.

  Info
Periodical
Materials Science Forum (Volumes 510-511)
Edited by
Hyung Sun Kim, Yu Bao Li and Soo Wohn Lee
Pages
34-37
DOI
10.4028/www.scientific.net/MSF.510-511.34
Citation
J. H. Park, S. G. Kim, S. S. Park, S. S. Hong, G. D. Lee, "Photocatalytic Oxidation and Decomposition of Acetic Acid over TiO2, TS-1 and Ti-MCM-41 Catalysts", Materials Science Forum, Vols. 510-511, pp. 34-37, 2006
Online since
March 2006
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$32.00
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