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Comparative study of Rh–MoOx and Rh–ReOx supported on SiO2 for the hydrogenolysis of ethers and polyols

Paper ID Volume ID Publish Year Pages File Format Full-Text
46446 46440 2012 11 PDF Available
Title
Comparative study of Rh–MoOx and Rh–ReOx supported on SiO2 for the hydrogenolysis of ethers and polyols
Abstract

Rh–MOx/SiO2 (M = Mo or Re) catalysts shows the high activity of the hydrogenolysis of C–O bond in the substrates with CH2OH group such as tetrahydrofurfuryl alcohol, various diols and their ethers. Characterization results suggest the catalyst structure were isolated MoOx species and small ReOx cluster with low valence attached on the surface of Rh metal particles. It is characteristic that the reactivity of the C–O bond in the –O–C–C–CH2OH is higher than that in the –O–C–CH2OH over Rh–MoOx/SiO2, and Rh–ReOx/SiO2 has the opposite tendency to Rh–MoOx/SiO2. The difference in the regioselectivity of the hydrogenolysis over Rh–MoOx/SiO2 and Rh–ReOx/SiO2 can be related to the different structure of isolated MoOx species and small ReOx clusters.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Rh-MOx/SiO2 (M = Mo, Re; M/Rh = 0.13) showed high hydrogenolysis activity. ► All the Mo and Re species interacts with Rh metal surface. ► Mo and Re species have isolated and 2-D structure, respectively. ► Different reactivity is due to the difference in the local structure of Mo and Re.

Keywords
Metal–oxide interaction; Low valent Mo; Low valent Re; Hydrogenolysis; Regioselectivity
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Comparative study of Rh–MoOx and Rh–ReOx supported on SiO2 for the hydrogenolysis of ethers and polyols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 111–112, 12 January 2012, Pages 27–37
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Any Questions? feel free to contact us