高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 712.

• 研究简报 • 上一篇    下一篇

柴油深度脱芳烃Pd-Pt/USY催化剂的EXAFS研究

杨军1,2, 张喜文2, 韩崇仁2, 卢冠忠1   

  1. 1. 华东理工大学工业催化研究所, 上海 200237;
    2. 中国石油化工集团公司抚顺石油化工研究院, 抚顺 113001
  • 收稿日期:2001-03-21 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 杨军(1964年出生),女,博士研究生,高级工程师,从事石油加工催化剂研究.E-mail:janewane@163.net E-mail:janewane@163.net
  • 基金资助:

    中国石油化工集团资助.

EXAFS Characterization of Sulfur-tolerant Pd-Pt/USY Catalystfor Deep Hydrodearomatization of Diesel

YANG Jun1,2, ZHANG Xi-Wen2, HAN Chong-Ren2, LU Guan-Zhong1   

  1. 1. Research Institute of Industrial Catalysis, East China university of Science and Technology, Shanghai 200237, China;
    2. Fushun Research Institute of Petroleum and Petrochemicals Engineering, Petroleum and Petrochemical Engineering Croup, Fushun 113001, China
  • Received:2001-03-21 Online:2002-04-24 Published:2002-04-24

关键词: EXAFS, Pd-Pt/USY, 柴油, 深度脱芳烃, 耐硫

Abstract: The metal dispersion and sulfur tolerancc of Pd-Pt/USYcatalysts with different n(Pd)/n(Pt) ratios was investigated by using an extended X-ray absorption fine structure(EXAFS) method.The resultsindicate that the presence of Pd in Pd-Pt/USY catalyst can restrain Pt particles from agglomerating, so thePt dispersion of catalyst calcined in air increases as the increasing of n(Pd)/n(Pt) ratio.There are morePd/Pt alloy metal particles in sulfided Pd-Pt/USY catalyst with n(Pd)/n(Pt) = 4/1, which has a benefitto the improvement of sulfur-tolerant performance ot the catalyst.The sulfur-tolerant performance of Pd-Pt/USYcatalyst is improved obviously in the presence of Pt.On the other hand, the higher dispersion ofPt on oxidic catalyst is a main reason for thc forming of more Pd-Pt alloy metal particles on the sulfidedcatalyst.

Key words: EXAFS, Pd-Pt/USY, Diesel, Deep hydrodearomatization, Sulfur tolerance

中图分类号: 

TrendMD: