TPSR, TPR, and TPO Studies of Pd-V2O5/Al2O3 Catalysts in Complete Catalytic Oxidation of Benzene

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Title:TPSR, TPR, and TPO Studies of Pd-V2O5/Al2O3 Catalysts in Complete Catalytic Oxidation of Benzene
Creators:
Dancheva, Snejana
Ilieva, Liuba
Kotsev, Nikolay
Andreev, Atanas
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 59, 9, pp. 1922-1930

Abstract

<p>Alumina-supported palladium vanadium-pentoxide catalysts were studied by means of temperature-programmed surface reaction, temperature-programmed reduction, temperature-programmed oxidation, and by ESR spectroscopy in the complete oxidation of benzene. The surface reaction measurements indicated that 0.5% Pd - 30% V<sub>2</sub>O<sub>5</sub> / Al<sub>2</sub>O<sub>3</sub> produced most oxidation products, compared to 0.5% Pd / Al2O3 or 30% V<sub>2</sub>O<sub>5</sub> / Al<sub>2</sub>O<sub>3</sub> samples. A drastic fall of peak maxima in temperature-programmed oxidation and reduction spectra indicates the decisive role of palladium in the mixed metal metal oxide system in facilitating the vanadium redox transitions. During initial period of catalysts operation, there proceeds formation of vanadium oxide phases which contain clustered V<sup>4+</sup> ions in a matrix of vanadium pentoxide. These ions are responsible for the high activity of the palladium vanadium pentoxide catalyst.

Title:TPSR, TPR, and TPO Studies of Pd-V2O5/Al2O3 Catalysts in Complete Catalytic Oxidation of Benzene
Creators:
Dancheva, Snejana
Ilieva, Liuba
Kotsev, Nikolay
Andreev, Atanas
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:59
Number:9
Page Range:pp. 1922-1930
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19941922UNSPECIFIED
ID Code:618
Item Type:Article
Deposited On:06 Feb 2009 17:02
Last Modified:06 Feb 2009 16:02

Citation

Dancheva, Snejana; Ilieva, Liuba; Kotsev, Nikolay; Andreev, Atanas (1994) TPSR, TPR, and TPO Studies of Pd-V2O5/Al2O3 Catalysts in Complete Catalytic Oxidation of Benzene. Collection of Czechoslovak Chemical Communications, 59 (9). pp. 1922-1930. ISSN 0010-0765

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