Oxidation of Benzyl Alcohol by using Gold Nanoparticles Supported on Ceria Foam

被引：56

作者：

Alhumaimess, Mosaed ^{[1
]}

Lin, Zhongjie ^{[1
]}

Weng, Weihao ^{[2
]}

Dimitratos, Nikolaos ^{[1
]}

Dummer, Nicholas F. ^{[1
]}

Taylor, Stuart H. ^{[1
]}

Bartley, Jonathan K. ^{[1
]}

Kiely, Christopher J. ^{[2
]}

Hutchings, Graham J. ^{[1
]}

机构：

[1] Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Cardiff CF10 3AT, S Glam, Wales

[2] Lehigh Univ, Ctr Adv Mat & Nanotechnol, Bethlehem, PA 18015 USA

来源：

CHEMSUSCHEM | 2012年 / 5卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

foams; gold; nanoparticles; oxidation; supported catalysts; LIQUID-PHASE OXIDATION; SOL IMMOBILIZATION TECHNIQUE; AEROBIC OXIDATION; CATALYSTS; CARBON; SELECTIVITY; MECHANISM; ALDEHYDES; ALUMINA; SIZE;

D O I：

10.1002/cssc.201100374

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The efficacy of using cerium oxide foams as a support for Au nanoparticles and subsequent use as oxidation catalysts have been investigated. These were synthesized using L-asparagine to produce a cerium coordination polymer foam, which was calcined to give the oxide foam. Au nanoparticles were supported on the CeO2 foams using a sol-immobilization method. The activity of the Au/foamCeO2 for solvent-free benzyl alcohol oxidation was superior to standard Au/CeO2 catalysts, and the activity was found to be dependent on the crystallization time of the precursor foam. A crystallization time of 4 h was found to produce the most active catalyst, which retained activity and a high selectivity to benzaldehyde (ca. 96?%) when re-used and this is related to the structure of the material. The high activity is attributed to the greater lability of surface oxygen in the support compared with commercial CeO2 materials.

引用

页码：125 / 131

页数：7

共 37 条

[1] A collaborative effect between gold and a support induces the selective oxidation of alcohols [J].

Abad, A ;

Concepción, P ;

Corma, A ;

García, H .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (26) :4066-4069

[2] Catalyst parameters determining activity and selectivity of supported gold nanoparticles for the aerobic oxidation of alcohols:: The molecular reaction mechanism [J].

Abad, Alberto ;

Corma, Avelino ;

Garcia, Hermenegildo .

CHEMISTRY-A EUROPEAN JOURNAL, 2008, 14 (01) :212-222

[3] Efficient chemoselective alcohol oxidation using oxygen as oxidant.: Superior performance of gold over palladium catalysts [J].

Abad, Alberto ;

Almela, Carles ;

Corma, Avelino ;

Garcia, Hermenegildo .

TETRAHEDRON, 2006, 62 (28) :6666-6672

[4] Gold catalysts supported on ceria and ceria-alumina for water-gas shift reaction [J].

Andreeva, D ;

Ivanova, I ;

Ilieva, L ;

Abrashev, MV .

APPLIED CATALYSIS A-GENERAL, 2006, 302 (01) :127-132

[5]

[Anonymous], 2005, AM ETHNOL

[6] Mechanism of selective alcohol oxidation to aldehydes on gold catalysts: Influence of surface roughness on reactivity [J].

Boronat, Mercedes ;

Corma, Avelino ;

Illas, Francesc ;

Radilla, Juan ;

Rodenas, Tania ;

Sabater, Maria J. .

JOURNAL OF CATALYSIS, 2011, 278 (01) :50-58

[7]

Cainelli G., 1984, Chromium Oxidants in Organic Chemistry

[8] Exotemplated ceria catalysts with gold for CO oxidation [J].

Carabineiro, S. A. C. ;

Bastos, S. S. T. ;

Orfao, J. J. M. ;

Pereira, M. F. R. ;

Delgado, J. L. ;

Figueiredo, J. L. .

APPLIED CATALYSIS A-GENERAL, 2010, 381 (1-2) :150-160

[9] Gold supported on a mesoporous CeO2 matrix as an efficient catalyst in the selective aerobic oxidation of aldehydes in the liquid phase [J].

Corma, A ;

Domine, ME .

CHEMICAL COMMUNICATIONS, 2005, (32) :4042-4044

[10] Oxidation of mono- and polyalcohols with gold: Comparison of carbon and ceria supported catalysts [J].

Demirel, S. ;

Kern, P. ;

Lucas, M. ;

Claus, P. .

CATALYSIS TODAY, 2007, 122 (3-4) :292-300

← 1 2 3 4 →