Graphitised carbon as support for Ru/C ammonia synthesis catalyst

被引：59

作者：

Rossetti, I ^{[1
]}

Pernicone, N ^{[1
]}

Forni, L ^{[1
]}

机构：

[1] Univ Milan, Dipartimento Chim Fis & Elettrochim, I-20133 Milan, Italy

来源：

CATALYSIS TODAY | 2005年 / 102卷

关键词：

carbon supported Ru catalyst; graphitisation; ammonia synthesis;

D O I：

10.1016/j.cattod.2005.02.010

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In the present work, we compared the catalytic activity and mainly the stability under the usual ammonia synthesis conditions, of some carbon supports, differing as for their nature, purity and temperature of pretreatment. The effect of catalyst composition (metal and promoters loading) on stability was also investigated. XRD and N-2 adsorption/desorption analysis helped in elucidating the effect of carbon treatment. It was found that only after the support has been heated at least at 1900 degrees C the stability of the tri-promoted catalyst becomes fully satisfactory and virtually independent of Ru loading. For practical purposes such high temperature treatment must be compatible with the preservation of a sufficiently high surface area. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：219 / 224

页数：6

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