化工学报 ›› 2017, Vol. 68 ›› Issue (6): 2352-2358.DOI: 10.11949/j.issn.0438-1157.20170005

• 催化、动力学与反应器 • 上一篇    下一篇

甲醇热制备四方相ZrO2及其负载镍催化剂的顺酐加氢性能

梁二艳, 张因, 赵丽丽, 徐亚琳, 赵永祥   

  1. 山西大学化学化工学院, 精细化学品教育部工程研究中心, 山西 太原 030006
  • 收稿日期:2017-01-04 修回日期:2017-02-23 出版日期:2017-06-05 发布日期:2017-06-05
  • 通讯作者: 张因,赵永祥
  • 基金资助:

    国家自然科学基金青年科学基金项目(21303097);国家国际科技合作专项(2013DFA40460)

Selective hydrogenation of maleic anhydride over Ni/ZrO2 catalysts with ZrO2 prepared by methanol thermal method

LIANG Eryan, ZHANG Yin, ZHAO Lili, XU Yalin, ZHAO Yongxiang   

  1. Engineering Research Center of Ministry of Education for Fine Chemicals, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, Shanxi, China
  • Received:2017-01-04 Revised:2017-02-23 Online:2017-06-05 Published:2017-06-05
  • Contact: 10.11949/j.issn.0438-1157.20170005
  • Supported by:

    supported by the National Natural Science Foundation of China(21303097) and the International S&T Cooperation Program of China(2013DFA40460)

摘要:

通过改变甲醇热时间制备了一系列不同晶粒尺寸的四方相 ZrO2,采用过体积浸渍法制备了Ni 含量(质量分数)为10%的Ni/ZrO2催化剂,并考察了其催化顺酐液相加氢性能。采用氮气吸附-脱附(BET)、X射线衍射(XRD)、氢气程序升温还原(H2-TPR)、X射线光电子能谱(XPS)、原位红外光谱(in situ FTIR)等手段对催化剂进行了表征。研究结果表明,分散性好、晶粒尺寸小的Ni物种有利于C=C键加氢生成丁二酸酐;而金属-载体强相互作用的形成则有利于C=O加氢生成 γ-丁内酯。当甲醇热时间为2 h时,制备的Ni/ZrO2催化剂的C=O加氢活性最高,在反应温度为210℃,反应压力为5 MPa,反应时间为3 h时,其顺酐转化率达100%,γ-丁内酯选择性为44.7%。

关键词: 顺酐加氢, γ-丁内酯, 催化剂, 金属-载体强相互作用

Abstract:

A series of tetragonal ZrO2 which support different crystalline size were prepared by methanol thermal method. Ni/ZrO2 catalysts with Ni content of 10%(mass) were prepared by impregnation method and applied in the liquid phase hydrogenation of maleic anhydride. All catalysts were characterized by N2 physical adsorption-desorption, H2-temperature programmed reduction(H2-TPR), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS) and in situ Fourier transform infrared spectroscopy(in situ FTIR). Higher dispersion and smaller crystallite size of metallic Ni favored the hydrogenation of C=C to produce succinic anhydride. While the formation of strong metal-support interaction contributed the hydrogenation of C=O to produce γ-butyrolactone. When methanol thermal time was 2 h, the Ni/ZrO2-2 catalyst showed the highest catalytic activity for C=O hydrogenation.

Key words: liquid phase hydrogenation of maleic anhydride, γ-butyrolactone, catalyst, strong metal-support interaction

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