甘油氢解用固体超强碱负载的铜催化剂

doi:10.11949/j.issn.0438-1157.20150646

化工学报 ›› 2015, Vol. 66 ›› Issue (8): 3014-3021.DOI: 10.11949/j.issn.0438-1157.20150646

• 催化、动力学与反应器 • 上一篇下一篇

甘油氢解用固体超强碱负载的铜催化剂

郑丽萍, 袁振乐, 夏水鑫, 陈平, 侯昭胤

浙江大学化学系催化研究所, 浙江杭州 310028

收稿日期:2015-05-21 修回日期:2015-05-26 出版日期:2015-08-05 发布日期:2015-08-05
通讯作者: 侯昭胤
基金资助:
国家自然科学基金项目(21473155,21273198,21073159);浙江省自然科学基金项目(LZ12B03001)。

Super solid-base supported Cu catalysts for hydrogenolysis of glycerol to 1,2-propanediol

ZHENG Liping, YUAN Zhenle, XIA Shuixin, CHEN Ping, HOU Zhaoyin

Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China

Received:2015-05-21 Revised:2015-05-26 Online:2015-08-05 Published:2015-08-05
Supported by:
supported by the National Natural Science Foundation of China (21473155, 21273198, 21073159) and Zhejiang Provincial Natural Science Foundation (LZ12B03001).

摘要/Abstract

摘要：

用浸渍-燃烧法制备了固体超强碱MgO-CaO和MgO-SrO负载的高分散铜基催化剂,并将其用于甘油氢解制备1,2-丙二醇的反应。N₂吸附、X射线衍射、透射电子显微镜、H₂程序升温还原和N₂O氧化吸附及CO₂程序升温脱附等表征实验结果显示:Cu粒子均分散于Cu/MgO-CaO(或者Cu/MgO-SrO)催化剂的表面;与Cu/MgO相比,Cu/MgO-CaO和Cu/MgO-SrO具有更强的碱性,可以加速甘油的转化。上述结果表明,甘油氢解反应中铜催化剂的活性随碱性的增强而增加。

关键词: 生物柴油, 甘油, 氢解, 1,2-丙二醇, 固体碱

Abstract:

Highly dispersed copper nanoparticles supported on combined alkaline-earth metal oxides MgO-CaO and MgO-SrO were synthesized by impregnation-combustion method and used for hydrogenolysis of glycerol. The nanoparticles were characterized using N₂-adsorption, X-ray diffraction, transmission electronic microscope, temperature-programmed reduction with H₂, dissociative N₂O adsorption and CO₂ temperature-programmed desorption. The results revealed that Cu particles dispersed highly on the surface of Cu/MgO-CaO and Cu/MgO-SrO catalyst. The enhanced alkalinity of Cu/MgO-CaO and Cu/MgO-SrO accelerated the conversion of glycerol compared to Cu/MgO. It was concluded that the activity of Cu-based catalyst increased with its alkalinity.

Key words: biodiesel, glycerol, hydrogenolysis, 1,2-propanediol, solid-base

中图分类号:

TQ028.8

郑丽萍, 袁振乐, 夏水鑫, 陈平, 侯昭胤. 甘油氢解用固体超强碱负载的铜催化剂[J]. 化工学报, 2015, 66(8): 3014-3021.

ZHENG Liping, YUAN Zhenle, XIA Shuixin, CHEN Ping, HOU Zhaoyin. Super solid-base supported Cu catalysts for hydrogenolysis of glycerol to 1,2-propanediol[J]. CIESC Journal, 2015, 66(8): 3014-3021.

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甘油氢解用固体超强碱负载的铜催化剂

Super solid-base supported Cu catalysts for hydrogenolysis of glycerol to 1,2-propanediol

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