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The role of support and promoter on the oxidation of sulfur dioxide using platinum based catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
44402 46024 2006 7 PDF Available
Title
The role of support and promoter on the oxidation of sulfur dioxide using platinum based catalysts
Abstract

The catalytic oxidation of SO2 to SO3 was studied over platinum based catalysts in the absence and the presence of dopants. The active metal was supported on silica gel or titania (anatase) by impregnation. The activities of the silica supported catalysts were found to follow the order Pt–Rh/SiO2 > Pt/SiO2 > Pt–Al/SiO2. For the samples supported on titania the respective order was Pt/TiO2 > Pt–Rh/TiO2 > Pt–Al/TiO2. The size of the particles of the active phase, the presence of dopants and the purity of the catalyst were found to affect the catalytic performance. A careful selection of the pH of the impregnation solution and of the reduction temperature of the precursor salts resulted in a very active catalyst with average particle size of 1.7 nm.

Keywords
Silica; Titania; Platinum; Palladium; Rhodium; Catalyst; Sulphur dioxide oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 306, 7 June 2006, Pages 142–148
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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