Autothermal reforming of methane over Ni/γ-Al2O3 catalysts:: the enhancement effect of small quantities of noble metals

被引：110

作者：

Dias, JAC ^{[1
]}

Assaf, JM ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Engn Quim, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF POWER SOURCES | 2004年 / 130卷 / 1-2期

关键词：

autothermal reforming; noble metals; catalysts;

D O I：

10.1016/j.jpowsour.2003.11.053

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 effect of introducing small amounts of Pt, Pd and Ir (<0.3% by weight) into Ni/gammaAl(2)O(3) catalysts (15% Ni w/w) for the autothermal reforming of methane (ATR) was investigated. While the unpromoted catalyst took the partial oxidation of methane to equilibrium, the promoted ones increased the methane conversion in ATR. No electronic modifications of nickel sites were observed with the addition of noble metals, but they did cause an increase in metal surface area. The effect of noble metals on this reaction, under these conditions, was assigned to this expansion of the metal surface. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：106 / 110

页数：5

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