Use of Nb2O5 as nickel passivating agent:: characterisation of the Ni/Nb2O5/SiO2 system

被引：9
|
作者：
Santos, LT
Pereira, EB
Homs, N
Llorca, J
de la Piscina, PR
Pereira, MM [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Quim, Rio de Janeiro, Brazil
[2] Univ Fed Rio de Janeiro, Escola Quim, BR-21945970 Rio de Janeiro, Brazil
[3] Univ Estado Rio De Janeiro, Inst Quim, Dept Quim Fis, Rio De Janeiro, Brazil
[4] Univ Barcelona, Fac Quim, Dept Quim Inorgan, E-08028 Barcelona, Spain
来源：
CATALYSIS TODAY | 2003年 / 78卷 / 1-4期
关键词：
Nb2O5; nickel-based catalysts; incipient-wetness method;
D O I：
10.1016/S0920-5861(02)00331-0
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Niobia-modified silica was used as support for nickel-based catalysts. Catalysts with different nickel loading were prepared by successive incipient-wetness impregnation of toluenic nickel octanoate solutions. The samples were characterised. after both calcination and reduction by TEM-EDX techniques and tested in the ethane hydrogenolysis. Their catalytic behaviour was compared to that of related silica-supported nickel catalysts. A high suppression of hydrogenolysis activity (93-99%) was determined for the niobia-modified silica-supported nickel catalysts which do not show nickel particles on silica. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：459 / 465
页数：7
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