Selective C-O Hydrogenolysis of Erythritol over Supported Rh-ReOx Catalysts in the Aqueous Phase

被引：42

作者：

Said, Achraf ^{[1
]}

Perez, Denilson Da Silva ^{[2
]}

Perret, Noemie ^{[1
]}

Pinel, Catherine ^{[1
]}

Besson, Michele ^{[1
]}

机构：

[1] Univ Claude Bernard, IRCELYON, CNRS, UMR5256, 2 Ave Albert Einstein, F-69626 Villeurbanne, France

[2] Inst FCBA, InTechFibres, F-38044 Grenoble, France

来源：

CHEMCATCHEM | 2017年 / 9卷 / 14期

关键词：

biomass; cyclization; rhenium; rhodium; supported catalysts; CHEMOSELECTIVE HYDROGENOLYSIS; GLYCEROL HYDROGENOLYSIS; POLYOL CONVERSIONS; ETHYLENE-GLYCOL; CYCLIC ETHERS; SUCCINIC ACID; RHENIUM; HYDROGENATION; IR-REOX/SIO2; MECHANISM;

D O I：

10.1002/cctc.201700260

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：

Bimetallic Rh-ReOx (Re/Rh molar ratio 0.4-0.5) catalysts supported on TiO2 and ZrO2 were prepared by the successive impregnation of dried and calcined unreduced supported Rh catalysts. Their catalytic performances were evaluated in the hydrogenolysis of erythritol to butanetriols (BTO) and butanediols (BDO) in aqueous solution at 150-240 degrees C under 30-120 bar H-2. The activity depended on the nature of the support, and the highest selectivity to BTO and BDO at 80% conversion was 37 and 29 %, respectively, in the presence of 3.7 wt% Rh-3.5 wt% ReOx/ZrO2 at 200 degrees C under 120 bar. The characterization of the catalysts by CO chemisorption, TEM with energy-dispersive X-ray spectroscopy, thermogravimetric analysis with MS, and X-ray photoelectron spectroscopy suggests a different distribution and reducibility of Re species over the supported Rh nanoparticles, which depends on the support.

引用

页码：2768 / 2783

页数：16

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