Pd/Pt on Ti-containing mixed oxides as dearomatization catalysts:: Physico-chemical characterization and activity

被引：2

作者：

Albertazzi, S

Barbieri, C

Infantes-Molina, A

Jiménez-López, A

Moreno-Tost, R

Rodríguez-Castellón, E

Vaccari, A

机构：

[1] Univ Bologna, Dipartimento Chim Ind & Mat, INSTM, I-40136 Bologna, Italy

[2] Univ Malaga, Dept Quim Inorgan, Fac Ciencias, E-29071 Malaga, Spain

来源：

CATALYSIS LETTERS | 2005年 / 104卷 / 1-2期

关键词：

Pd/Pt; TiO2; TiO2-WO3; TiO2-WO3-SiO2; decahydronaphthalene or decalin; 1,2,3,4-tetrahydronaphthalene or tetralin; hydrogenation; hydrogenolysid/ring-opening; dearomatization; dibenzothiophene;

D O I：

10.1007/s10562-005-7432-3

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：

Pd/Pt supported on pure and doped TiO2 (TiO2-WO3 and TiO2-WO3-SiO2) were prepared and characterized by different techniques (XPS, TEM, XRD, H-2-TPR and TPD of ammonia). These catalysts were investigated in the hydrogenation of tetralin at 6.0 MPa, checking also their thio-tolerance by feeding increasing amounts of dibenzothiophene (DBT, 300 and 1000 wt ppm). The catalytic activity followed the order: Pd/Pt-TiO2 > Pd/Pt-TiO2-WO3-SiO2 > Pd/Pt-TiO2-WO3, evidencing a negative role of a second oxide inside TiO2. The Pd/Pt-TiO2 catalyst showed high activity regardless of reaction conditions (temperature, contact time, H-2/tetralin ratio) together with a good thio-tolerance up to 300 wt ppm of DBT.

引用

页码：29 / 37

页数：9

共 33 条

[1] Noble metal containing Al/Ce/Mg pillared montmorillonite clay as catalysts in the hydrotreating of LCO fractions [J].