催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (5): 1027-1032.DOI: 10.1016/S1872-2067(12)60526-9

• 研究论文 • 上一篇    

高性能麦芽糖加氢Ru-B/SBA-15非晶态合金催化剂的制备

王奕, 徐亮, 许磊, 李和兴, 李辉   

  1. 上海师范大学资源化学教育部重点实验室和上海市稀土功能材料重点实验室, 上海 200234
  • 收稿日期:2012-12-03 修回日期:2013-05-20 出版日期:2013-05-06 发布日期:2013-05-06
  • 通讯作者: 李辉
  • 基金资助:

    国家自然科学基金(21273149);教育部新世纪优秀人才支持计划(NCET-11-1052);上海市科委和教委项目(11JC1408900,12490502800,10SG41,12YZ084).

WANG Yi, XU Liang, XU Lei, LI Hexing, LI Hui   

  1. The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
  • Received:2012-12-03 Revised:2013-05-20 Online:2013-05-06 Published:2013-05-06
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21273149), the Program for New Century Excellent Talents in University (NCET-11-1052), and the Shanghai Science & Technology and Education Committee (11JC1408900, 12490502800, 10SG41, 12YZ084).

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摘要：

以介孔氧化硅(SBA-15)为载体, 采用超声辅助(NH4)2RuCl6浸渍和BH4-还原法制备了负载型Ru-B催化剂, 并通过X射线衍射、X光电子能谱、差示扫描量热法和透射电子显微等技术表征了该催化剂.结果表明, 所制得的Ru-B-X/SBA-15催化剂具有非晶态合金结构, 且Ru-B颗粒高分散在SBA-15的孔道中.在液相麦芽糖加氢反应中, 与采用RuCl3为金属源制得的Ru-B-C/SBA-15相比, Ru-B-X/SBA-15催化剂具有更高的活性, 是非负载型Ru-B-C催化剂的7倍以上, 且能重复套用11次而未发生显著的失活.

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关键词: 钌, 硼, 非晶态合金, 介孔氧化硅, 加氢, 麦芽糖, 麦芽糖醇

Abstract:

Mesoporous silica (SBA-15)-supported Ru-B catalyst was synthesized by ultrasound-assisted incipient wetness infiltration of (NH4)2RuCl6 into SBA-15 and a subsequent reduction with BH4-. It was characterized by X-ray diffraction, X-ray photoelectron spectroscopy, differential scanning calorimetry, and transmission electron microscopy. The resulting Ru-B-X/SBA-15 catalyst was identified to be an amorphous alloy highly dispersing within the pore channels of SBA-15. During liquid-phase maltose hydrogenation, the as-synthesized Ru-B-X/SBA-15 catalyst was more active than the Ru-B-C/SBA-15 obtained via the same process but using RuCl3 as the metal source. The as-prepared Ru-B-X/SBA-15 delivered catalytic activity up to seven times greater than that associated with the reference unsupported Ru-B-C catalyst prepared through the reduction of RuCl3 with BH4, and could be used repetitively 11 times without significant deactivation.