Influence of hydrothermally modified γ-Al2O3 on the properties of NiMo/γ-Al2O3 catalyst

被引：8
作者：
Li, Juncheng [1 ,2 ]
Xiang, Lan [1 ]
Feng, Xu [1 ]
Wang, Zhanwen [1 ]
机构：
[1] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
[2] China Shenhua Coal Liquefact Corp Ltd, Beijing, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 07期
基金：
中国国家自然科学基金;
关键词：
hydrothermal modification; dispersion; HDN; NiMo/gamma-Al2O3; catalyst;
D O I：
10.1016/j.apsusc.2007.08.037
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 influence of hydrothermal modification of /gamma-Al2O3 on the properties of NiMo/gamma-Al2O3 catalyst was investigated in this paper. The experimental results showed that the use of the modified gamma-Al2O3 in the preparation of the NiMo/gamma-Al2O3 catalyst led to the increase of the dispersion of the surface Mo and Ni oxides, favored the formation of the poly-molybdates and promoted the reduction of the active Mo oxides owing to the increase of the surface acidity of the modified gamma-Al2O3. Therefore, the NiMo/gamma-Al2O3 catalyst supported on the modified gamma-Al2O3 exhibited a higher hydrodenitrogenation (HDN) activity than that supported on the untreated gamma-Al2O3 in the temperature range of 300-340 degrees C. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：2077 / 2080
页数：4
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