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磷化镍催化剂的制备机理及其加氢脱氮性能

刘理华,  刘书群,  柴永明,  刘晨光

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文章导航 > 燃料化学学报（中英文）  > 2013 >  41(03): 335-340
刘理华, 刘书群, 柴永明, 刘晨光. 磷化镍催化剂的制备机理及其加氢脱氮性能[J]. 燃料化学学报（中英文）, 2013, 41(03): 335-340.
引用本文: 刘理华, 刘书群, 柴永明, 刘晨光. 磷化镍催化剂的制备机理及其加氢脱氮性能[J]. 燃料化学学报（中英文）, 2013, 41(03): 335-340.
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LIU Li-hua, LIU Shu-qun, CHAI Yong-ming, LIU Chen-guang. Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst[J]. Journal of Fuel Chemistry and Technology, 2013, 41(03): 335-340.
Citation: LIU Li-hua, LIU Shu-qun, CHAI Yong-ming, LIU Chen-guang. Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst[J]. Journal of Fuel Chemistry and Technology, 2013, 41(03): 335-340.
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磷化镍催化剂的制备机理及其加氢脱氮性能

  • 1.

    淮北师范大学, 化学与材料科学学院, 安徽 淮北 235000;

  • 2.

    中国石油大学(华东)重质油国家重点实验室CNPC催化重点实验室, 山东 青岛 266555

基金项目: 国家重点基础研究发展规划(973计划,2010CB226905);安徽省教育厅自然科学基金(KJ2013B243);淮北师范大学青年科研项目(2012xq47)。
详细信息
    通讯作者:

    刘理华,E-mail:chemliulh@yahoo.com;Tel:+86-561-3803233。

  • 中图分类号: TE624

Preparation mechanism and hydrodenitrogenation performance of nickel phosphide catalyst

  • 1.

    School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China;

  • 2.

    State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, CNPC, China University of Petroleum (East China), Qingdao 266555, China

    摘要
  • 摘要: 采用热重-质谱联用技术研究了次磷酸盐在氮气中的热分解过程,探讨了次磷酸盐热分解法制备磷化镍的反应机理:次磷酸镍中的Ni2+能够"催化"H2PO2-低温发生歧化反应生成PH3,继而还原Ni2+得到Ni2P。制备了不同负载量的Ni2P/SiO2催化剂,用X射线衍射(XRD)、低温N2吸附-脱附、高分辨透射电镜(HRTEM)等分析技术对催化剂结构进行表征。结果表明,Ni2P活性组分在SiO2载体上具有良好的分散性,颗粒粒径为5～8 nm。以喹啉为加氢脱氮模型化合物,在高压微型固定床反应器上对催化剂活性进行评价,在反应温度为360℃、氢气压力为2.0 MPa、液时空速为2.0 h-1、氢油体积比为500:1时,Ni2P(20%)/SiO2催化剂的加氢脱氮率为41.5%。
    Abstract: Thermal decomposition of nickel hypophosphite precursor into nickel phosphide (Ni2P) was studied using thermogravimetry-mass spectrometry analysis. The results indicated that nickel ion (Ni2+) influenced the decomposition pathway of hypophosphite, because it might catalyze the reaction of hypophosphite to produce PH3 at lower temperature. Silica-supported Ni2P catalysts with different loadings were prepared and characterized using X-ray diffraction, N2 adsorption-desorption, and high resolution transmission electron microscopy. It was indicated that Ni2P was well dispersed on the support with a particle size of 5～8 nm. The catalytic performance of as-prepared catalysts was evaluated in a fixed-bed reactor for hydrodenitrogenation of quinoline. Under the reaction temperature of 360℃, hydrogen pressure of 2.0 MPa, LHSV of 2.0 h-1, and H2/oil volume ratio of 500:1, the conversion of quinoline over Ni2P(20%)/SiO2 catalyst reached 41.5%.
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    • 参考文献(15)
  • SHU Y, OYAMA S T. Synthesis, characterization, and hydrotreating activity of carbon-supported transition metal phosphides[J]. Carbon, 2005, 43(7): 1517-1532.
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出版历程
  • 收稿日期:  2012-08-09
  • 修回日期:  2012-11-07
  • 刊出日期:  2013-03-30

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