石油炼制与化工

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改性凹凸棒土负载Ni-B合金催化剂的制备及其顺酐选择加氢制γ-丁内酯反应研究

许健1,张春光1,彭立1,孙鲲鹏2   

  1. 1. 中国石油兰州润滑油研究开发中心
    2. 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室
  • 收稿日期:2010-03-31 修回日期:2010-06-22 出版日期:2010-11-12 发布日期:2010-11-12
  • 通讯作者: 许健

PREPARATION OF MODIFIED ATTAPULGITE SUPPORTED Ni-B AMORPHOUS ALLOY CATALYST FOR THE SELECTIVE HYDROGENATION OF MALEIC ANHYDRIDE TO γ-BUTYROLACTONE

XU Jian   

  • Received:2010-03-31 Revised:2010-06-22 Online:2010-11-12 Published:2010-11-12
  • Contact: XU Jian

摘要: 以硫酸改性凹凸棒土为催化剂载体,利用化学还原法制备了一系列Ni-B/PAL-X非晶态合金催化剂,并作了XRD、TEM、XPS和BET表征;考察了催化剂制备和反应条件对顺酐选择加氢制γ-丁内酯反应的影响。实验结果表明:Ni-B/PAL-8催化剂上,当反应压力为3MPa、反应温度200℃、反应时间2h时,顺酐的转化率达到了100%,γ-丁内酯的收率达到了97.1%;经过硫酸改性后的凹凸棒土载体的棒状,针状结构以及其较高的比表面积是Ni-B/PAL-8催化剂顺酐选择加氢制γ-丁内酯高活性的主要因素。

关键词: 凹凸棒土, Ni-B非晶态合金催化剂, 顺酐, γ-丁内酯, 选择性加氢

Abstract: A series of sulfuric acid modified attapulgite supported Ni-B amorphous alloy catalysts were prepared by chemical reduction method. The obtained catalysts were characterized by XRD, TEM, XPS and BET. The effect of catalyst preparation conditions and reaction conditions on the selective hydrogenation of maleic anhydride to γ-butyrolactone was investigated. Results showed that over Ni-B/PAL-8 catalyst, under the conditions of a reaction temperature of 200℃, a reaction pressure of 3 MPa and a reaction time of 2 h, the conversion of maleic anhydride reached 100% and the selectivity to γ-butyrolactone was 97.1%. The high activity of Ni-B/PAL-8 catalyst could be attributed to the rod-like and needle-like structure of the sulfuric acid modified attapulgite support and the relatively high surface area of the catalyst.

Key words: attapulgite, Ni-B amorphous alloy catalyst, maleic anhydride, γ-butyrolactone, selective hydrogenation