催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (7): 846-850.

• 研究论文 • 上一篇    下一篇

SiO2 负载壳聚糖席夫碱钯催化剂催化芳香醛酮还原为芳香烃

贺海峰, 龚树文, 刘丽君, 崔庆新, 尹汉东   

  1. 聊城大学化学化工学院, 山东聊城 252059
  • 收稿日期:2010-07-25 出版日期:2010-07-25 发布日期:2010-07-25

Hydrogenation of Aromatic Ketones to Aromatic Hydrocarbons over SiO2-Supported Chitosan Schiff-Base Palladium Catalyst

HE Haifeng, GONG Shuwen*, LIU Lijun, CUI Qingxin, YIN Handong   

  1. College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, Shandong, China
  • Received:2010-07-25 Online:2010-07-25 Published:2010-07-25

PDF

948

被引次数

17

摘要： 制备了 SiO2 负载的壳聚糖席夫碱钯催化剂, 利用 X 射线衍射、红外光谱和热重等方法对催化剂进行了表征, 并考察了该催化剂催化羰基加氢为亚甲基的反应性能, 以二苯甲酮为底物, 系统地研究了反应时间、反应温度和催化剂用量等因素对反应性能的影响. 结果表明, 该催化剂具有较高的催化芳香羰基加氢为亚甲基的活性和选择性, 且反应可在较低的温度和常压的温和条件下进行. 关键词：壳聚糖; 席夫碱;

关键词: 壳聚糖, 席夫碱, 钯, 芳香醛, 芳香酮, 催化加氢, 亚甲基

Abstract: A silica-supported chitosan (CS) Schiff base (SB) palladium complex (SiO2-CS-SB-Pd) was prepared and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and thermal gravimetric analysis. The catalytic performance of the catalyst in hydrogenation of a series of aromatic carbonyl compounds was studied. The influence of the reaction time, reaction temperature, and catalyst amount on hydrogenation of benzophenone was also investigated. The results indicated that the SiO2-CS-SB-Pd catalyst has excellent catalytic activity for hydrogenation of the aromatic aldehydes or ketones into corresponding hydrocarbons at low temperature and under 0.1 MPa. The catalyst is perfectly leach-proof and can be recycled at least two consecutive runs without any obvious loss in activity for the hydrogenation of benzophenone.

Key words: chitosan, Schiff base, palladium, aromatic aldehyde, aromatic ketone, catalytic hydrogenation, methene