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论文类型：期刊论文

发表时间：2016-01-01

发表刊物：RSC ADVANCES

收录刊物：SCIE、EI

卷号：6

期号：104

页面范围：102102-102108

ISSN号：2046-2069

摘要：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.