Characterization and reactivity of Nb2O5 supported Ru catalysts

被引：35
作者：
Chary, Komandur V. R. [1 ]
Srikanth, Chakravartula S. [1 ]
Rao, Vattikonda Venkat [1 ]
机构：
[1] Indian Inst Chem Technol, Catalysis Div, Hyderabad 500007, Andhra Pradesh, India
来源：
CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 05期
关键词：
Hydrodechlorination; 1,2,4-Trichlorobenzene; Ruthenium; Niobium oxide; Dispersion; HYDRODECHLORINATION; RUTHENIUM; HYDROGENATION; DEACTIVATION; CHLOROBENZENE; KINETICS; PD;
D O I：
10.1016/j.catcom.2008.10.006
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：
A series of Ru/Nb2O5 catalysts with Ru loadings from 0.5-7.18 wt.% were prepared and characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), temperature programmed desorption (TPD) of hydrogen and CO chemisorption measurements. XRD patterns reveal the presence of RuO2 from 3.0 wt.% Ru loading. TPR profiles show only one peak due to reduction of RuO2 to Ru-0. The H-2-TPD exhibits two peaks, one due to desorption of hydrogen from Ru metal and another due to spill over from metal to the support. The catalytic properties were evaluated for the vapor-phase hydrodechlorination of 1,2,4-trichlorobenzene and related to Ru dispersion. (C) 2008 Published by Elsevier B.V.
引用
收藏
页码：459 / 463
页数：5
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