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CO oxidation over Au supported on Mn–ZSM5 and Mn–MOR

Paper ID Volume ID Publish Year Pages File Format Full-Text
49383 46740 2015 5 PDF Available
Title
CO oxidation over Au supported on Mn–ZSM5 and Mn–MOR
Abstract

•Gold nanoparticles were introduced by deposition–precipitation on Mn–zeolites.•Manganese exchanged in zeolites promotes the activity of gold-based catalysts.•A reductive treatment of bimetallic catalysts enhances the catalytic activity.•Au/Mn–mordenite catalysts showed the highest activity in CO oxidation.

Active gold catalysts for CO oxidation were obtained by the deposition–precipitation of gold on ZSM-5 and mordenite, both of them ion-exchanged with manganese. A strong promotion of Mn upon the activity of bimetallic Au/Mn catalysts was observed when compared with the monometallic Au–zeolites. In turn, when an in-situ reduction of the bimetallic catalysts was performed, a further increase in activity was observed. Characterizations suggested that smaller gold nanoparticles were stabilized in the bimetallic solids and that the reduction process caused a rearrangement of Au and Mn species on the catalyst surface.

Keywords
Gold; Manganese; Zeolite; Catalysts; CO oxidation
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CO oxidation over Au supported on Mn–ZSM5 and Mn–MOR
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 69, 5 September 2015, Pages 212–216
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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