Catalytic Pd nanoparticles synthesized using a lyotropic liquid crystal polymer template

被引：146

作者：

Ding, JH ^{[1
]}

Gin, DL ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 01期

关键词：

D O I：

10.1021/cm990603d

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：

Ion exchange of Pd(II) ions into a nanostructured lyotropic liquid crystal network, followed by reduction with hydrogen gas, generates a polymer composite containing finely dispersed, catalytically active Pd nanoparticles 4-7 nm in diameter. Loss of order upon nanoparticle growth appears to be due to residual mobility in the polymer matrix near the ionic headgroups. The Pd nanoparticle composite exhibits excellent product selectivity in benzaldehyde hydrogenation and high reactivity in catalyzing Heck olefinations.

引用

收藏

页码：22 / +

页数：4

相关论文

共 28 条

[1] Electrocatalysts for fuel cells [J].

Acres, GJK ;

Hards, GA .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1996, 354 (1712) :1671-1680

[2] Preparation of nano-sized palladium particles anchored onto Ln2O3 grains with Ln = La, Nd, Sm, Eu or Gd [J].

Andersson, M ;

Bakchinova, E ;

Jansson, K ;

Nygren, M .

JOURNAL OF MATERIALS CHEMISTRY, 1999, 9 (01) :265-268

[3] HETEROGENEOUS CATALYSIS IN ORGANIC-CHEMISTRY .10. EFFECT OF THE CATALYST SUPPORT ON THE REGIOCHEMISTRY OF THE HECK ARYLATION REACTION [J].

AUGUSTINE, RL ;

OLEARY, ST .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1995, 95 (03) :277-285

[4]

BELLER M, 1995, SYNLETT, P441

[5] First palladium-catalyzed Heck reactions with efficient colloidal catalyst systems [J].

Beller, M ;

Fischer, H ;

Kuhlein, K ;

Reisinger, CP ;

Herrmann, WA .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1996, 520 (1-2) :257-259

[6] Polymerizable lyotropic liquid crystals containing transition-metal and lanthanide ions: Architectural control and introduction of new properties into nanostructured polymers [J].

Deng, H ;

Gin, DL ;

Smith, RC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (14) :3522-3523

[7]

Dhas NA, 1997, J PHYS CHEM B, V101, P6834

[8] Polymerizable lyotropic liquid crystals containing transition-metal ions as building blocks for nanostructured polymers and composites [J].

Gray, DH ;

Gin, DL .

CHEMISTRY OF MATERIALS, 1998, 10 (07) :1827-1832

[9]

Guillemot D, 1997, J PHYS IV, V7, P931

[10] Characterization of palladium nanoparticles protected with polymer as hydrogenation catalyst [J].

Hirai, H ;

Yakura, N ;

Seta, Y ;

Hodoshima, S .

REACTIVE & FUNCTIONAL POLYMERS, 1998, 37 (1-3) :121-131