肉桂醛催化选择加氢制氢化肉桂醛.pdf

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第 33 卷第 2 期福建林业科技 Vol 33 No 2
2 0 0 6 年 6 月 Jour of Fujian Forestry Sci and Tech J un , 2 0 0 6
肉桂醛催化选择加氢制氢化肉桂醛
郭德波1 1 ,杨乐夫1 ,张国强2 ,方荣谦1 ,蔡俊修1
(1 厦门大学化学系,福建厦门 361005 ; 2 厦门大学化学工程与生物工程系,福建厦门 361005)
摘要: 采用煤质活性炭作载体,分别用 HNO3 、H2O2 和(NH4 ) 2 S2O8 进行预处理,然后用浸渍法负载 PdCl2 ,在 H2 流中还原
得到 Pd/ C 催化剂,用于肉桂醛(CAL) 选择加氢制氢化肉桂醛( HCAL) 的反应。考查了 Pd 负载量,反应温度和压力对加氢
反应的影响,优化了反应条件。进一步考查了助剂 Fe、Co 、Ni[1 ]对反应的影响。最终,CAL 转化率为 98 % ,HCAL 选择性为
88 %。
关键词: Pd/ C 催化剂α; -β不饱和醛;选择加氢;肉桂醛;氢化肉桂醛
中图分类号: O643 322 文献标识码: A 文章编号: 1002 - 7351(2006) 02 - 0025 - 04
Selective Catalytic Hydrogenation of Cinnamaldehyde to Hydrocinnamaldehyde
GUO De bo1 ,YANGLe fu1 , ZHANG Guo qiang2 , FANG Rong qian1 ,CAI Jun xiu1
(1 Department of Chemistry , Xiamen University Xiamen , Xiamen Fujian 361005 , China ;
2 Department of Chemical and Biochemical Engineering , Xiamen University , Xiamen Fujian 361005 , China)
Abstract :Coal based activated carbon was pretreated with HNO3 , H2O2 and (NH4 ) 2 S2O8 before selected as support A series of
Pd/ C catalysts were prepared by means of impregnation and with PdCl2 as precursor It was reduced in H2 stream , and applied to
selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde Effects of Pd loading , reaction temperature and pressure were
discussed In addition , promoters of Fe , Co , Ni were