Comparison between homogeneous and sol-gel-encapsulated rhodium-quaternary ammonium ion pair catalysts

被引：39

作者：

Blum, J ^{[1
]}

Rosenfeld, A ^{[1
]}

Polak, N ^{[1
]}

Israelson, O ^{[1
]}

Schumann, H ^{[1
]}

Avnir, D ^{[1
]}

机构：

[1] TECH UNIV BERLIN, INST ANORGAN & ANALYT CHEM, D-10623 BERLIN, GERMANY

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1996年 / 107卷 / 1-3期

关键词：

immobilized catalysts; hydroformylation; hydrogenation; rhodium; sol-gel;

D O I：

10.1016/1381-1169(95)00222-7

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：

The ion pairs RhCl3/Aliquat 336(R) and RhCl3/[Me(3)N(CH2)(3)Si(OMe)3]Cl were entrapped in SiO2 sol-gel matrices, and used as catalysts for isomerization of allylbenzene, disproportionation of 1,3-cyclohexadiene, hydrogenation of alkenes, alkynes, arenes, nitriles and nitro-compounds, and for hydroformylation of C-C double bonds. The immobilized ion pairs proved to be stable, leach-proof and recyclable. Occasionally the catalytic efficiency dropped upon recycling, owing to pore blockage but the activity could be restored by treatment with boiling water. The performances of the sol-gel-entrapped ion pairs were compared with those of the homogeneous RhCl3/Aliquat 336 catalyst. In most cases the immobilized catalysts proved superior to their homogeneous version.

引用

页码：217 / 223

页数：7

共 19 条

[11] ORGANICALLY MODIFIED SOL-GEL SENSORS
LEV, O
TSIONSKY, M
RABINOVICH, L
GLEZER, V
SAMPATH, S
PANKRATOV, I
GUN, J
[J]. ANALYTICAL CHEMISTRY, 1995, 67 (01) : A22 - A30
[12] LEVY D, 1994, NEW J CHEM, V18, P1073
[13] INSOLUBLE LIGANDS AND THEIR APPLICATIONS .2. POLYSILOXANE-PHOSPHINE LIGANDS, THEIR COMPLEXES, AND HYDROGENATION CATALYSTS
PARISH, RV
HABIBI, D
MOHAMMADI, V
[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1989, 369 (01) : 17 - 28
[14] SOL-GEL ENCAPSULATED TRANSITION-METAL QUATERNARY AMMONIUM ION-PAIRS AS HIGHLY EFFICIENT RECYCLABLE CATALYSTS
ROSENFELD, A
AVNIR, D
BLUM, J
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1993, (06) : 583 - 584
[15] DETERMINATION OF ACTIVATION-ENERGY OF ENTRANCE INTO MICROPORES - QUENCHING OF THE FLUORESCENCE OF PYRENE-DOPED SIO2 SOL-GEL MATRICES BY OXYGEN
SAMUEL, J
POLEVAYA, Y
OTTOLENGHI, M
AVNIR, D
[J]. CHEMISTRY OF MATERIALS, 1994, 6 (08) : 1457 - 1461
[16] SASSON Y, 1988, J MOL CATAL, V11, P207
[17] Scherrer G.W, 1990, DRYING SOL GEL SCI
[18] SCHUBERT U, 1993, P 1 EUR WORKSH HYBR
[19] DICARBONYLBIS[2-(DIPHENYLPHOSPHINO)-N,N-DIMETHYLETHANAMINE]BIS-[MU-(2-METHYL)-2-PROPANETHIOLATO]DIRHODIUM AND DICARBONYLBIS[2-(DIPHENYLPHOSPHINO)-N,N,N-TRIMETHYLETHANAMINIUM]-BIS-[MU-(2-METHYL)-2-PROPANETHIOLATO]DIRHODIUM TETRAPHENYLBORATE - THEIR SYNTHESES, CHARACTERIZATION AND APPLICATION AS HYDROGENATION CATALYST
SCHUMANN, H
HEMLING, H
GOREN, N
BLUM, J
[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1995, 485 (1-2) : 209 - 213

← 1 2 →