Ignition characteristics of Pt, Ni and Pt-Ni catalysts used for autothermal fuel processing

被引：28

作者：

Avci, AK

Trimm, DL

Aksoylu, AE

Önsan, ZI

机构：

[1] Bogazici Univ, Dept Chem Engn, TR-34342 Istanbul, Turkey

[2] Univ New S Wales, Sch Chem Engn & Ind Chem, Sydney, NSW 2052, Australia

来源：

CATALYSIS LETTERS | 2003年 / 88卷 / 1-2期

关键词：

n-butane; nickel; oxidation; platinum; propane; OXIDATION; HYDROGEN; CONVERSION; HYDROCARBONS; METHANE; COMBUSTION;

D O I：

10.1023/A:1023574530390

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：

Oxidation of propane and n-butane over supported Pt, Ni and Pt-Ni catalysts was studied under fuel-rich conditions. Light-off temperatures followed the order of propane > n-butane and of Ni>Pt-Ni>Pt and were found to have minimum values at optimal fuel : oxygen ratios over Pt-Ni. The bimetallic Pt-Ni catalyst is likely to involve (i) synergistic interactions between the two metals and (ii) pronounced effect of Pt metal during surface ignition. Differences in oxidation activities of Pt and Pt-Ni catalysts seem to be related to the degree of dispersion of Pt metal. For both hydrocarbons, coke formation was not observed under the conditions employed.

引用

页码：17 / 22

页数：6

共 22 条

[1] Kinetic study of the catalytic oxidation of alkanes over nickel, palladium, and platinum foils [J].