A simple and efficient route to active and dispersed silica supported palladium nanoparticles

被引：69

作者：

Barau, Alexandra ^{[2
]}

Budarin, Vitaly ^{[1
]}

Caragheorgheopol, Agneta ^{[2
]}

Luque, Rafael ^{[1
]}

Macquarrie, Duncan J. ^{[1
]}

Prelle, Ambra ^{[1
]}

Teodorescu, Valentin S. ^{[3
]}

Zaharescu, Maria ^{[2
]}

机构：

[1] Univ York, Green Chem Ctr Excellence, York YO10 5DD, N Yorkshire, England

[2] Roumanian Acad, Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania

[3] Natl Inst Mat Phys, Bucharest 077125, Romania

来源：

CATALYSIS LETTERS | 2008年 / 124卷 / 3-4期

关键词：

mesoporous silica; Pd nanoparticles; heterogenous catalysis; Heck reaction;

D O I：

10.1007/s10562-008-9465-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：

Various mesoporous silica supported Pd materials were prepared by different methodologies in order to control and optimize the metal nanoparticle sizes for catalytic applications. The catalytic activities (conversion, mol% and selectivity to methyl-cinnamate) of the supported palladium catalysts were investigated in the Heck reaction under microwave irradiation using various haloarenes. Pd materials prepared by co-precipitation exhibited a very poor activity in the Heck reaction compared to that of Pd impregnated samples. Impregnated materials prepared without the use of a specific reducing agent had comparable activities to those of APTS-NaBH4 reduced Pd materials, validating the simplicity of the methodology. High selectivities to methylcinnamate were obtained for all materials.

引用

页码：204 / 214

页数：11

共 51 条

[21]

Kulg HP., 1974, XRAY DIFFRACTION PRO, V2

[22] CHEMICAL CATALYSIS BY COLLOIDS AND CLUSTERS [J].

LEWIS, LN .

CHEMICAL REVIEWS, 1993, 93 (08) :2693-2730

[23] Selective removal of NO2 in the presence of oxygen and NO over Pd/SiO2 catalysts [J].

Li, MS ;

Seshan, K ;

Lefferts, L .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 50 (03) :143-151

[24] Pore size control of mesoporous silicas from mixtures of sodium silicate and TEOS [J].

Liu, Jian ;

Yang, Qihua ;

Zhao, X. S. ;

Zhang, Lei .

MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 106 (1-3) :62-67

[25] Structured mesoporous organosilicas from an acetonitrile-water template system [J].

Macquarrie, DJ ;

Gilbert, BC ;

Gilbey, LJ ;

Caragheorgheopol, A ;

Savonea, F ;

Jackson, DB ;

Onida, B ;

Garrone, E ;

Luque, R .

JOURNAL OF MATERIALS CHEMISTRY, 2005, 15 (35-36) :3946-3951

[26] Pt and Pd nanoparticles immobilized on amine-functionalized zeolite: Excellent catalysts for hydrogenation and heck reactions [J].

Mandal, S ;

Roy, D ;

Chaudhari, RV ;

Sastry, M .

CHEMISTRY OF MATERIALS, 2004, 16 (19) :3714-3724

[27] Heterogeneous Heck catalysis with palladium-grafted molecular sieves [J].

Mehnert, CP ;

Weaver, DW ;

Ying, JY .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (47) :12289-12296

[28] Organically modified Pd-silica catalysts applied in Heck coupling [J].

Molnár, A ;

Papp, A ;

Miklós, K ;

Forgo, P .

CHEMICAL COMMUNICATIONS, 2003, (20) :2626-2627

[29] Effect of catalysis on the stability of metallic nanoparticles: Suzuki reaction catalyzed by PVP-palladium nanoparticles [J].

Narayanan, R ;

El-Sayed, MA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (27) :8340-8347

[30]

*PALL JCPDS, 1969, 461043 PALL JCPDS

← 1 2 3 4 5 6 →