期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 336, 期 1-2, 页码 1-7出版社
ELSEVIER
DOI: 10.1016/j.molcata.2010.11.020
关键词
Immobilization of homogeneous catalyst; Periodic mesoporous organogold(I)silica; [Au-PPh2-PMO(Ph)]; Phenyl (Ph)-functionalization [PMO(Ph)]; Hydration reaction of terminal alkyne
资金
- National Natural Science Foundation of China [20825724]
- Chinese Education Committee [20070270001]
- Shanghai Government [S30406]
A periodic mesoporous organogold(I)silica catalyst was synthesized by surfactant-directed co-condensation of Au[PPh2(CH2)(2)Si(OCH2CH3)(3)](2)Cl and (CH3CH2O)(3)SiPhSi(OCH2CH3)(3). The as-prepared Au-PPh2-PMO(Ph) contained ordered mesopore channels with both phenyl (Ph) group and Au(I) organometal homogeneously embedded in silica walls. Such catalyst exhibited higher activity than free Au(PPh3)Cl in hydration reactions of various terminal alkynes. This could be mainly attributed to the high surface area, the ordered mesoporous channels and the enhanced surface hydrophobility, which facilitated the diffusion and adsorption of reactants. Meanwhile, the unique coordination model between Au(I) and (PPh2) was also favorable for the alkyne hydration. Besides the high activity, the catalyst could be easily recycled and used repetitively owing to the high hydrothermal stability and the stabilized Au(I) active sites against leaching. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据