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Gold/hydroxyapatite catalysts: Synthesis, characterization and catalytic activity to CO oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
48051 46489 2009 7 PDF Available
Title
Gold/hydroxyapatite catalysts: Synthesis, characterization and catalytic activity to CO oxidation
Abstract

This work reports the synthesis, characterization and catalytic activity for CO oxidation of gold catalysts supported on calcium hydroxyapatite. On both, the hydroxyapatite support and the gold-supported hydroxyapatite catalyst, the CO conversion shows a peak near 100% of conversion at room temperature. The generation of structural vacancies by interaction of CO with the solid provokes the formation of peroxide species in the presence of gaseous oxygen, which seems to be responsible of this high conversion of CO at room temperature. Moreover, the influence of the pre-treatment temperature on the activity has been observed and related with the elimination of carbonate species and the generation of structural defects in the apatite structure, which are able to modify the gold oxidation state.

Keywords
Gold; Hydroxyapatite; CO oxidation; Vacancies; Peroxides
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Gold/hydroxyapatite catalysts: Synthesis, characterization and catalytic activity to CO oxidation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 87, Issues 3–4, 7 April 2009, Pages 245–251
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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