Modification of the Pd/SiO2-Al2O3 catalyst's thioresistance by the addition of a second metal (Pt, Ru, and Ni)

被引：27

作者：

Barrio, VL

Arias, PL

Cambra, JF

Güemez, MB

Pawelec, B

Fierro, JLG

机构：

[1] Univ Basque Country, Sch Engn, Dept Chem & Environm Engn, Bilbao 48013, Spain

[2] CSIC, Spanish Council Sci Res, Inst Catalysis & Petrochem, E-28049 Madrid, Spain

来源：

CATALYSIS COMMUNICATIONS | 2004年 / 5卷 / 04期

关键词：

hydrodesulfurization; nickel; noble metals; silica-alumina; thioresistance;

D O I：

10.1016/j.catcom.2004.01.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The thioresistance of amorphous silica-alumina (ASA)-supported Pd catalyst was modified by the incorporation of a second metal (Pt, Ru or Ni). The catalysts were studied in the dibenzothiophene (DBT) hydrodesulfurization (HDS) at P = 5 MPa, T = 473-588 K and WHSV = 0.48 h(-1). The HDS conversions at steady state followed the sequence: Pt-Pd > Pd > 8Ni-Pd > Ru-Pd > 4Ni-Pd. The Pt-Pd catalyst was found to be the only one which did not show deactivation during on-steam operation. The factors influencing catalyst thioresistance are discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：173 / 178

页数：6

共 16 条

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