Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (12): 4468-4474.DOI: 10.16085/j.issn.1000-6613.2017-0220

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Synthesis of Ni/Al2O3 catalysts by azeotropic distillation for hydrogenation of cinnamaldehyde

QIN Jilong1, WANG Fei1, CAI Jinpeng1, HU Jianheng1, LIU Wenwen1, JIANG Xingmao1,2   

  1. School of Petrochemical and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China;
    2 School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, Hubei, China
  • Received:2017-02-14 Revised:2017-03-08 Online:2017-12-05 Published:2017-12-05

共沸蒸馏法制备Ni/Al2O3催化剂及其肉桂醛加氢反应性能

秦跻龙1, 王非1, 蔡金鹏1, 胡建恒1, 刘雯雯1, 姜兴茂1,2   

  1. 1 常州大学石油化工学院, 江苏 常州 213164;
    2 武汉工程大学化工与制药学院, 湖北 武汉 430073
  • 通讯作者: 非,博士,讲师,研究方向为纳米催化剂的开发及应用研究;姜兴茂,博士,教授,研究方向为能源纳米材料。
  • 作者简介:秦跻龙(1990-),男,硕士研究生,研究方向为纳米材料的制备及应用研究。E-mail:13775610275@163.com。
  • 基金资助:
    国家自然科学基金项目(21503023,21373034,U1463210)。

Abstract: Highly dispersed nickel nanoparticles supported on Al2O3 catalysts were successfully prepared by azeotropic distillation assisted fabrication. The physical and chemical properties of the catalysts were characterized by XRD,TEM,N2 sorption and BJH pore size analyses. Liquid phase selective hydrogenation of cinnamaldehyde was selected as model reactions to study the catalytic behavior of Ni/Al2O3 catalysts. In comparison with the catalysts prepared by impregnation,the catalysts prepared by azeotropic distillation assisted fabrication exhibited high activity in the hydrogenation reaction of cinnamaldehyde because of its smaller particle size and high dispersion. Yield of hydrocinnamic aldehyde was up to 77.24% at 150℃ under 2 MPa(loading of nickel was 15%). In addition,Ni/Al2O3 catalysts maintained high activity for hydrogenation of cinnamaldehyde to hydrocinnamic aldehyde after five consecutive runs and its XRD and TEM were the same as before,which revealed that as-prepared Ni/Al2O3 catalysts had a remarkable recycling stability.

Key words: nickel, aluminium oxide, azeotropic distillation, cinnamaldehyde, hydrogenation

摘要: 利用共沸蒸馏法制备了金属Ni高度分散的Ni/Al2O3催化剂,并利用X射线粉末衍射仪(XRD)、透射电子显微镜(TEM)和全自动比表面积和孔径分析仪(BET)对其进行了一系列表征。实验过程中,选用肉桂醛(CAL)加氢反应来考察该催化剂的催化性能。结果表明,共沸蒸馏法制备出的Ni/Al2O3催化剂较浸渍法而言,其金属Ni的粒径较小且高度分散,同时催化剂对肉桂醛加氢生成3-苯丙醛(HCAL)具有良好的催化效果。在反应温度为150℃、反应压力为2MPa、负载量为15%时,3-苯丙醛的产率高达77.24%。此外,该催化剂在循环使用了5次后3-苯丙醛的产率并未出现明显下降的趋势,通过循环过后的XRD和TEM表征显示其前后的数据并没有发生改变,这说明该催化剂具有良好的循环稳定性。

关键词: 镍, 三氧化二铝, 共沸蒸馏法, 肉桂醛, 加氢

CLC Number: 

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