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Indexed by:期刊论文

Date of Publication:2012-10-05

Journal:CATALYSIS COMMUNICATIONS

Included Journals:SCIE、EI、Scopus

Volume:27

Page Number:200-205

ISSN No.:1566-7367

Key Words:Cr-based MOF; Au nanoparticle; Cyclohexane; Selective oxidation

Abstract:Two bimetallic catalysts Au/MIL-53(Cr) and Au/MIL-101(Cr) were prepared by urea deposition-precipitation. The catalytic performances of these catalysts were investigated via selective oxidation of cyclohexane to cyclohexanone and cyclohexanol by molecular oxygen in the absence of solvent and initiator. It is believed that framework Cr ions are effective catalytic sites, which accounts for that Au/MIL-53(Cr) and Au/MIL-101(Cr) exhibit superior catalytic performance. The confinement effect of MIL-101(Cr) cages to Au nanoparticles results in <2 nm Au particles, which accounts for that Au/MIL-101(Cr) presents higher selectivity than Au/MIL-53(Cr). (C) 2012 Elsevier B.V. All rights reserved.