Recyclable rhodium-Cp'-heterogenized catalysts for hydrogenation of olefins

被引：5

作者：

Pederzolli, Fernanda Rosi S. ^{[1
]}

Wolke, Silvana I. ^{[1
]}

da Rosa, Ricardo Gomes ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Inst Quim, Av Bento Goncalves 9500,CP 15003, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF CATALYSIS | 2018年 / 360卷

关键词：

Cyclopentadienyl-rhodium complexes; Heterogenized catalysts; Olefins hydrogenation; Silica Aerosil 200; Silica sol-jel; PENTAMETHYLCYCLOPENTADIENYL-RHODIUM; MESOPOROUS SILICA; CRYSTAL-STRUCTURE; COMPLEXES; IMMOBILIZATION; LIGANDS; SURFACE; DIHYDROGEN; REACTIVITY; MIGRATION;

D O I：

10.1016/j.jcat.2018.02.007

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：

Immobilized catalysts were prepared by mixing the ligand Cp', [C5Me4(n-propyl-Si(OEt)(3))], with RhCl3 center dot xH(2)O for subsequent reaction with silica Aerosil 200 (system A) or by copolymerization with TEOS (system B). Both systems were applied on olefin hydrogenation, showing high activity and robustness, allowing for many recycles (TON = 1.0 x 10(5) for system A and 2.0 x 10(4) for system B). The characterization techniques (IR-DRIFTS, C-13-CPMAS, and TEM) suggest a molecular nature for catalytic species. According to the deuteration experiment, a tetra-hapto-Cp'-Rh would be formed on the surface during the catalytic runs. (C) 2018 Elsevier Inc. All rights reserved.

引用

页码：201 / 212

页数：12

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