应用化学

• 研究简报 • 上一篇    

SnCl2-ZnCl2/C无汞乙炔氢氯化催化剂的制备与优化

郭燕燕,刘鹰*,胡瑞生,高官俊,孙宏娟   

  1. (内蒙古大学化学化工学院 呼和浩特 010021)
  • 收稿日期:2013-07-08 修回日期:2013-09-23 出版日期:2014-05-10 发布日期:2014-05-10
  • 通讯作者: 刘鹰,副教授; Tel/Fax:0471-4992981; E-mail:celiuy@imu.edu.cn; 研究方向:绿色催化过程
  • 基金资助:
    国家自然科学基金资助项目(21266015,20806036)

Preparation and Optimization of SnCl2-ZnCl2/C Mercury-free Catalyst for Acetylene Hydrochlorination

GUO Yanyan, LIU Ying*, HU Ruisheng, GAO Guanjun, SUN Hongjuan   

  1. (College of Chemistry and Chemical Engineering,Inner Mongolia University,Hohhot 010021,China)
  • Received:2013-07-08 Revised:2013-09-23 Published:2014-05-10 Online:2014-05-10

摘要: 利用超声波制备了SnCl2-ZnCl2/C无汞乙炔氢氯化催化剂,同时加入稀土化合物以稳定催化剂的性能。 通过黄金分割法与抛物线法确定了活性组分SnCl2与ZnCl2的最优质量比为2∶1。 优选制备工艺,发现在反应温度140 ℃,乙炔空速300 h-1,V(HCl)/V(C2H2)=1.10时,由0.67 g SnCl2、0.33 g ZnCl2、0.05 g Tb4O7以及4 g焙烧过的活性炭组成的催化剂,其乙炔平均转化率最高,为67.70%。 实验表明,载体的处理方式是影响催化剂性能的重要因素。

关键词: 乙炔氢氯化, 无汞催化剂, 正交试验法, 超声波

Abstract: Mercury-free catalyst SnCl2-ZnCl2/C for acetylene hydrochlorination was prepared by ultrasound method. Rare earth compounds were added to stabilize the performance of the catalyst. The optimal mass ratio of the active component SnCl2 and ZnCl2 is 2∶1, which was determined by golden section and parabolic method. At 140 ℃, acetylene space velocity 300 h-1, V(HCl)/V(C2H2)=1.10, in the presence of a catalyst composed by 0.67 g SnCl2, 0.33 g ZnCl2, 0.05 g Tb4O7, and 4 g calcined activated carbon(AC) supporter, the highest 67.70% acetylene average conversion rate was achieved. The preparation method of the supporter was found to be the most important effect factor of the catalyst performance.

Key words: acetylene hydrochlorination, mercury-free catalyst, orthogonal experiment, ultrasound

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