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林产化学与工业 ›› 2013, Vol. 33 ›› Issue (2): 103-107.doi: 10.3969/j.issn.0253-2417.2013.02.018

• 研究报告 • 上一篇    下一篇

Pd/C上松香催化加氢反应动力学

陈少芳1,2, 冉启斌2, 陈小鹏1, 王琳琳1, 阳承利1, 梁杰珍1   

  1. 1. 广西大学 化学化工学院, 广西 南宁 530004;2. 广西梧州日成林产化工 股份有限公司, 广西 梧州 543100
  • 收稿日期:2012-03-31 修回日期:1900-01-01 出版日期:2013-04-30 发布日期:2013-04-30
  • 通讯作者: 陈小鹏(1954-),男,教授,主要从事林产化工和精细化工方面的研究;E-mail:lilm@gxu.edu.cn。

Kinetic Study for Catalytic Hydrogenation of Rosin over Pd/C

CHEN Shao-fang1,2, RAN Qi-bin2, CHEN Xiao-peng1, WANG Lin-lin1, YANG Cheng-li1, LIANG Jie-zhen1   

  1. 1. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;2. Wuzhou Sun Shine Forestry and Chemicals Co., Ltd. of Guangxi, Wuzhou 543100, China
  • Received:2012-03-31 Revised:1900-01-01 Online:2013-04-30 Published:2013-04-30

摘要: 以脂松香为原料,改性Pd/C为催化剂和200号油为溶剂进行松香催化加氢反应的研究。采用改进搅拌器类型、加入200号溶剂油、提高搅拌速度大于600 r/min和改变催化剂粒径为10~20 μm的方法消除加氢过程中内外扩散的影响,利用DB-5毛细管气相色谱法在线采样跟踪分析在压力为5 MPa、温度为403~433 K条件下反应体系组成随时间的变化关系,对松香主要成分枞酸加氢反应过程进行拟均相动力学研究。结果表明,松香催化加氢的反应速率与枞酸浓度呈一级反应,其动力学方程为r=1.13×105exp(-5.904×103/T)C1,活化能为4.909×104 J/mol。

关键词: 松香, Pd/C, 催化加氢, 反应动力学

Abstract: Catalytic hydrogenation of rosin was studied with rosin as raw material, modified Pd/C as catalyst and oil No.200 as solvent. The effects of internal and external diffusion were eliminated by improving the type of stirrer, adding solvent oil No.200, raising rotational speed to more than 600 r/min and reducing granularity of catalyst at 10-20 μm. The changes of components with reaction time were traced on-line at temperature 403 K to 433 K and pressure 5 MPa by capillary gas chromatography. The pseudo-homogeneous reaction kinetics of catalytic hydrogenation of rosin was studied. The result shows that the reaction velocity of catalytic hydrogenation of rosin is the first order with respect to abietic acid concentration. The intrinsic kinetic equation is r=1.13×105exp(-5.904×103/T)C1 and the activation energy is 4.909×104 J/mol.

Key words: rosin, Pd/C, catalytic hydrogenation, reaction kinetics

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