Preparation and characterization of nano-sized CoMo/Al2O3 catalyst for hydrodesulfurization

被引：29

作者：

Choi, KH ^{[1
]}

Korai, Y ^{[1
]}

Mochida, I ^{[1
]}

机构：

[1] Kyushu Univ, Inst Mat Chem & Engn, Fukuoka 8168580, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2004年 / 260卷 / 02期

关键词：

hydrodesulfurization; spray pyrolysis; CoMo/Al2O3;

D O I：

10.1016/j.apcata.2003.10.019

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：

CoMo on Al2O3 catalyst prepared by spray pyrolysis method was found in the form of spheres of 0.5-1.21 mum, which consisted of tiny primary particles of ca. 10-20 nm diameter. The materials shows comparable activity to those of commercial catalysts in HDS of straight run gas oil, in particular, refractory 4,6-dimethyldibenzothiophene (4,6-DMDBT). Weaker interactions between CoMo and Al2O3 are suggested by temperature-programmed reduction (TPR), Raman spectroscopy, to give more active species than those over the impregnated catalysts. This accounts for its comparable activity in spite of its smaller surface area. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：229 / 236

页数：8