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

页码：459 / 465

页数：7

共 7 条

[1] SYNTHESIS, CHARACTERIZATION, AND CATALYTIC PROPERTIES OF SIO2-ATTACHED ONE-ATOMIC-LAYER NIOBIUM OXIDE CATALYSTS [J].