Hydrogenolysis of glycerol over silica-supported copper-nanocatalyst: Effect of precipitating-agent and copper metal-loading

被引：20
作者：
Suthagar, K. [1 ,2 ,3 ]
Shanthi, K. [3 ]
Selvam, P. [1 ,2 ,4 ]
机构：
[1] Indian Inst Technol Madras, Natl Ctr Catalysis Res, Madras 600036, Tamil Nadu, India
[2] Indian Inst Technol Madras, Dept Chem, Madras 600036, Tamil Nadu, India
[3] Anna Univ, Dept Chem, Coll Engn, Madras 600025, Tamil Nadu, India
[4] Tohoku Univ, New Ind Creat Hatchery Ctr, Sendai, Miyagi 9808579, Japan
来源：
MOLECULAR CATALYSIS | 2018年 / 458卷
关键词：
Glycerol; Hydrogenolysis; 1,2-propanediol; Silica-support; Copper-nanocatalyst; Cu/SiO2; SELECTIVE HYDROGENOLYSIS; CATALYTIC PERFORMANCE; CU/SIO2; CATALYSTS; PROPYLENE-GLYCOL; HIGHLY EFFICIENT; PROPANEDIOL; SURFACE-AREA; RU CATALYSTS; GEL METHOD; OXIDE;
D O I：
10.1016/j.mcat.2017.11.035
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：
Preparation of various silica-supported copper-nanocatalysts (Cu/SiO2) by deposition precipitation and impregnation methods was demonstrated. These catalysts were prepared using urea and sodium hydroxide as the precipitating-agents. All the catalysts were systematically characterized by various analytical, spectroscopic and imaging techniques including XRD, N-2 sorption analysis, N2O chemisorption, TPD, TPR, DRUV-VIS XPS and TEM. The Cu/SiO2 catalyst prepared using urea as the precipitating-agent exhibited uniform and narrow size distribution copper-nanoparticles to that prepared using sodium hydroxide as well as impregnation method. The performance of the catalyst with different metal loading is analyzed and a Cu-loading of 15 wt% was found to be optimum for the maximum yield. Thus, the catalytic activity of 15 wt% Cu/SiO2 was systematically examined for the hydrogenolysis of glycerol reaction. The influence of reaction conditions and structure activity correlation were also elucidated in this work. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：307 / 316
页数：10
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