化工进展

• 工业催化 • 上一篇    下一篇

甘油氢解Cu/Cr催化剂制备方法对性能的影响

欧建雄,兰支利,尹笃林,杨春华,欧兰英   

  1. 湖南师范大学精细催化合成研究所
  • 出版日期:2010-04-05 发布日期:2010-04-05

Influence of preparation methods of Cu/Cr catalyst for
hydrogenolysis of glycerol

OU Jianxiong,LAN Zhili,YIN Dulin,YANG Chunhua,OU Lanying   

  1. Institute of Fine Catalysis and Synthesis,Hunan Normal University
  • Online:2010-04-05 Published:2010-04-05

摘要: Cu/Cr催化剂由于Cu对C—C键氢解活性很低,对C—O键氢解活性很高而成为甘油氢解制1,2-丙二醇效果最好的固体催化剂。采用5种方法制备了Cu/Cr催化剂,并用于甘油的催化氢解反应,发现Cu/Cr催化剂的制备方式极大地影响着其对甘油的催化氢解性能。以5种方法制备的Cu/Cr催化剂中,对甘油的催化氢解性能依次是:铜氨络合沉淀法>Adkins法>碳酸钠沉淀法>硅藻土浸渍法>干混法。运用XRD、TG、BET、FTIR、TPR等表征手段对制备的催化剂结构进行了表征,详细分析了不同方式制备的催化剂的结构差异,将催化剂的结构表征结果与催化反应性能进行关联分析和讨论,并从理论上解释了催化剂结构差异和催化氢解性能的关系。

Abstract: Cu/Cr catalyst exhibits superior catalytic hydrogenolysis activity in glycerol hydrogenolysis to 1,2-propanediol for its efficient hydrogenolytic activity towards C—O bond and poor activity towards C—C bond. Cu/Cr catalysts were prepared by different methods and examined for the glycerol hydrogenolysis reaction. Experimental results indicated that preparation methods have large effects on the glycerol hydrogenolysis. Among five catalysts prepared,the catalytic hydrogenolysis activity was found in the order of copper ammonia complexation method > Adkins method > sodium carbonate method > diatomite impregnation method > dry-mixed method. XRD,TG,BET,FT-IR and TPR were used to measure and analyse the structural differences of catalysts prepared by different methods. The correlation and structural effect with catalytic performance were also analysed and discussed.

京ICP备12046843号-2;京公网安备 11010102001994号
版权所有 © 《化工进展》编辑部
地址:北京市东城区青年湖南街13号 邮编:100011
电子信箱:hgjz@cip.com.cn
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn