Preparation, characterization and catalytic activity of palladium nanoparticles encapsulated in SBA-15

被引：54

作者：

Li, Changli ^{[1
,2
]}

Zhang, Qinghong ^{[1
,2
]}

Wang, Ye ^{[1
,2
]}

Wan, Huilin ^{[1
,2
]}

机构：

[1] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

来源：

CATALYSIS LETTERS | 2008年 / 120卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

palladium nanoparticles; SBA-15; adsorption method; alcohol oxidation;

D O I：

10.1007/s10562-007-9263-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple adsorption method was studied for the preparation of SBA-15-encapsulated palladium nanoparticles. This method employed the SBA-15 with organic template removed by ethanol extraction for the adsorption of cationic Pd precursors in alkaline solution followed by calcination and H-2 reduction. The pH of the solution was found to be a critical factor in determining the palladium content and the ordered mesoporous structure. Our characterizations revealed that the Pd nanoparticles prepared by this method were located inside the mesoporous channels and were quite uniform in size (mostly 3-4 nm). The SBA-15-encapsulated uniform Pd nanoparticles were efficient catalysts for solvent-free aerobic oxidation of alcohols.

引用

页码：126 / 136

页数：11

共 38 条

[1] Palladium nanoparticles as efficient green homogeneous and heterogeneous carbon-carbon coupling precatalysts: A unifying view [J].

Astruc, Didier .

INORGANIC CHEMISTRY, 2007, 46 (06) :1884-1894

[2] PREPARATION OF PD/SIO2 CATALYSTS FOR METHANOL SYNTHESIS .1. ION-EXCHANGE OF [PD(NH3)4](ACO)2 [J].

BONIVARDI, AL ;

BALTANAS, MA .

JOURNAL OF CATALYSIS, 1990, 125 (01) :243-259

[3] Differential potentiometric titration: Development of a methodology for determining the point of zero charge of metal (hydr)oxides by one titration curve [J].

Bourikas, K ;

Kordulis, C ;

Lycourghiotis, A .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (11) :4100-4108

[4] From microporous to mesoporous molecular sieve materials and their use in catalysis [J].

Corma, A .

CHEMICAL REVIEWS, 1997, 97 (06) :2373-2419

[5] Solvent-free oxidation of primary alcohols to aldehydes using Au-Pd/TiO2 catalysts [J].

Enache, DI ;

Edwards, JK ;

Landon, P ;

Solsona-Espriu, B ;

Carley, AF ;

Herzing, AA ;

Watanabe, M ;

Kiely, CJ ;

Knight, DW ;

Hutchings, GJ .

SCIENCE, 2006, 311 (5759) :362-365

[6] Enhanced IR absorption of CO adsorbed on Pd nanoparticles embedded in the mesoporous molecular sieve SBA-15 [J].

Jiang, YX ;

Ding, N ;

Sun, SG .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2004, 563 (01) :15-21

[7] Highly efficient aerobic oxidation of alcohols using a recoverable catalyst: The role of mesoporous channels of SBA-15 in stabilizing palladium nanoparticles [J].

Karimi, Babak ;

Abedi, Sedigheh ;

Clark, James H. ;

Budarin, Vitaly .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (29) :4776-4779

[8] Novel two-step synthesis of controlled size and shape platinum nanoparticles encapsulated in mesoporous silica [J].

Kónya, Z ;

Puntes, VF ;

Kiricsi, I ;

Zhu, J ;

Alivisatos, P ;

Somorjai, GA .

CATALYSIS LETTERS, 2002, 81 (3-4) :137-140

[9] Pre-prepared platinum nanoparticles supported on SBA-15 -: preparation, pretreatment conditions and catalytic properties [J].

Konya, Zoltan ;

Molnar, Eva ;

Tasi, G. ;

Niesz, Krisztian ;

Somorjai, Gabor A. ;

Kiricsi, Imre .

CATALYSIS LETTERS, 2007, 113 (1-2) :19-28

[10]

Kovtun G, 2002, ADV SYNTH CATAL, V344, P957, DOI 10.1002/1615-4169(200210)344:9<957::AID-ADSC957>3.0.CO

← 1 2 3 4 →