Document Detail


Total oxidation of toluene on Pt/CeO2-ZrO2-Bi2O3/gamma-Al2O3 catalysts prepared in the presence of polyvinyl pyrrolidone.
MedLine Citation:
PMID:  20022164     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pt/CeO(2)-ZrO(2)-Bi(2)O(3)/gamma-Al(2)O(3) (Pt/CZB/Al(2)O(3)) catalysts for the catalytic combustion of toluene, which is one of the volatile organic compounds (VOCs), were prepared by the wet impregnation method in the presence of polyvinyl pyrrolidone (PVP). X-ray powder diffraction, transmission electron microscopy, and BET specific surface area measurement using N(2) adsorption have been used to characterize the catalysts. The catalytic test was conducted from room temperature in a flow of 900 ppm of toluene in air and gas hourly space velocity (GHSV) of 8000 h(-1). The catalytic activity was evaluated in terms of C(7)H(8) conversion and the gas composition after the reaction was analyzed using two gas chromatographs with a flame ionization detector (FID) and a thermal conductivity detector (TCD). The Pt/CZB/Al(2)O(3) catalysts are specific for the total toluene oxidation and CO and any toluene-derivative compounds were not detected as by-products. The specific surface area of the catalysts was increased by the addition of PVP in the preparation process. By the optimization of the amount of platinum, complete oxidation of toluene was realized at a temperature as low as 120 degrees C on a 7 wt%Pt/16 wt%Ce(0.64)Zr(0.15)Bi(0.21)O(1.895)/gamma-Al(2)O(3) catalyst.
Authors:
Toshiyuki Masui; Hayato Imadzu; Naoto Matsuyama; Nobuhito Imanaka
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-11-26
Journal Detail:
Title:  Journal of hazardous materials     Volume:  176     ISSN:  1873-3336     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-02-01     Completed Date:  2010-05-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1106-9     Citation Subset:  IM    
Copyright Information:
2009 Elsevier B.V. All rights reserved.
Affiliation:
Department of Applied Chemistry, Faculty of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / chemistry*
Aluminum Oxide
Bismuth
Boron Compounds
Catalysis
Cerium
Incineration
Oxidation-Reduction
Platinum
Polyvinyls
Pyrrolidinones / chemistry*
Toluene / chemistry*
Volatile Organic Compounds / chemistry*
Zirconium
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Boron Compounds; 0/Polyvinyls; 0/Pyrrolidinones; 0/Volatile Organic Compounds; 0/zirconium diboride; 108-88-3/Toluene; 1304-76-3/bismuth oxide; 1306-38-3/ceric oxide; 1344-28-1/Aluminum Oxide; 7440-06-4/Platinum; 7440-45-1/Cerium; 7440-67-7/Zirconium; 7440-69-9/Bismuth

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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