Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-01-01

Journal: RSC ADVANCES

Included Journals: EI、SCIE

Volume: 6

Issue: 104

Page Number: 102102-102108

ISSN: 2046-2069

Abstract: Ultra small gold nanoparticles supported by porous silica (Au-SiO2) were successfully synthesized. Due to enrichment of reactants by silica, the Au-SiO2 particles functioned as nanoreactors for catalytic etherification of silanes with high selectivity and reusability. The reaction kinetics indicated that the catalysis operated by a zero order reaction mechanism, which is contrary to previously reported homogeneous catalysts, as well as Au-Al2O3 and Au-FeOx prepared by the same method. The mechanism of the reaction was described by the Langmuir-Hinshelwood model, with the rate determining step being the surface reaction on the gold nanoparticles.