催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (1): 27-30.DOI: 10.1016/S1872-2067(10)60155-6

• 研究快讯 • 上一篇    下一篇

MoP 催化剂上乙炔选择性催化加氢

周桂林 1, 王普光 2, 蒋宗轩 1, 应品良 1, 李灿 1   

  1. 1中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连 116023; 2陕西延长石油 (集团) 有限责任公司, 陕西西安 710075
  • 收稿日期:2010-09-13 修回日期:2010-10-25 出版日期:2011-01-13 发布日期:2014-05-22

Selective Hydrogenation of Acetylene over a MoP Catalyst

ZHOU Guilin1, WANG Puguang2, JIANG Zongxuan1, YING Pinliang1, LI Can1,∗   

  1. 1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2Shannxi Yanchang Petroleum Co., Ltd., Xi’an 710075, Shannxi, China
  • Received:2010-09-13 Revised:2010-10-25 Online:2011-01-13 Published:2014-05-22

PDF

1337

被引次数

20

摘要： 通过高温还原法制得磷化钼 (MoP) 催化剂, 采用 X 射线衍射和原位 X 射线光电子能谱对其进行了表征, 并考察其催化乙炔选择性加氢性能. 结果表明, 在 650 ºC 经 H2 还原制得的催化剂中形成了大量的低价态物种 MoP, 但仍含有大量的高价态 Mo 和 P 物种, 该催化剂具有加氢活性中心和缺电子中心双重功能, 在乙炔选择性加氢反应中, 乙炔转化率超过 99% 时, 乙烯选择性仍能保持在 73% 以上.

关键词: 磷化钼, 乙炔, 选择性加氢, 乙烯

Abstract: A MoP catalyst was prepared by high temperature hydrogen reduction. Its properties were investigated by X-ray diffraction and in-situ X-ray photoelectron spectroscopy. It was used for the selective catalytic hydrogenation of acetylene. The results indicated that MoP is formed by hydrogen reduction at 650 °C. The prepared MoP catalyst contained high valence molybdenum and phosphorus species. The catalyst is a bifunctional catalyst, which includes a hydrogenation center and an electron-deficient center. Ethylene selectivity can exceed 73% when the acetylene conversion is higher than 99%.  

Key words: molybdenum phosphide, acetylene, selective hydrogenation, ethylene