One-Pot Multistep Cascade Reactions over Multifunctional Nanocomposites with Pd Nanoparticles Supported on Amine-Modified Mesoporous Silica

被引：33

作者：

Li, Ping ^{[1
,2
]}

Liu, Hua ^{[1
,2
]}

Yu, Yu ^{[1
,2
]}

Cao, Chang-Yan ^{[1
]}

Song, Wei-Guo ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, BNLMS, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2013年 / 8卷 / 10期

基金：

中国国家自然科学基金;

关键词：

diffusion; heterogeneous catalysis; mesoporous materials; nanoparticles; palladium; CATALYTIC APPLICATIONS; BIFUNCTIONAL CATALYST; AU NANOPARTICLES; SBA-15; MATERIALS; SOLID CATALYST; SHELL; BASE; OXIDATION; CORE; ORGANOSILICA;

D O I：

10.1002/asia.201300514

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two kinds of multifunctional nanocomposites, SBA-15-NH2/Pd-p and SBA-15-NH2/Pd-f, with platelet-like and fiber-like morphologies, respectively, were fabricated by immobilizing PdNPs onto amine-functionalized SBA-15. Some of the amino groups acted as anchoring sites for PdNPs, whilst the remaining groups acted as BrOnsted basic sites. As a result, the composites served as excellent multifunctional heterogeneous catalysts for one-pot multistep cascade reaction sequences. Moreover, when diffusion was the rate-determine step, SBA-15-NH2/Pd-p, with small mesopores, was superior to the fiber-like control sample, owing to its short diffusion length, a lower possibility of pore clogging, and better mass transportation for the reaction species during the catalysis.

引用

页码：2459 / 2465

页数：7

共 52 条

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