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

共 33 条

[21] PREPARATION AND CHARACTERIZATION OF CHLORINE-FREE RUTHENIUM CATALYSTS AND THE PROMOTER EFFECT IN AMMONIA-SYNTHESIS .2. A LANTHANIDE OXIDE-PROMOTED RU/AL2O3 CATALYST [J].

MURATA, S ;

AIKA, K .

JOURNAL OF CATALYSIS, 1992, 136 (01) :118-125

[22] LANTHANIDE NITRATES AS EFFECTIVE PROMOTERS OF A RU/AL2O3 CATALYST FOR AMMONIA-SYNTHESIS [J].

MURATA, S ;

AIKA, K ;

ONISHI, T .

CHEMISTRY LETTERS, 1990, (07) :1067-1068

[23]

Nielsen A., 1995, AMMONIA CATALYSIS MA

[24] Ruthenium catalyst supported on CeO2 for ammonia synthesis [J].

Niwa, Y ;

Aika, K .

CHEMISTRY LETTERS, 1996, (01) :3-4

[25] NEW TYPE OF CARBON COATED ALUMINA SUPPORTS FOR THE PREPARATION OF HIGHLY-ACTIVE RUTHENIUM CATALYSTS FOR AMMONIA-SYNTHESIS [J].

RAO, KSR ;

RAO, PK ;

MASTHAN, SK ;

KALUSCHNAYA, L ;

SHUR, VB .

APPLIED CATALYSIS, 1990, 62 (01) :L19-L22

[26] EFFECT OF BARIUM ADDITION ON THE AMMONIA-SYNTHESIS ACTIVITY OF A CESIUM PROMOTED RUTHENIUM CATALYST SUPPORTED ON CARBON-COVERED ALUMINA (CCA) [J].

RAO, KSR ;

MASTHAN, SK ;

PRASAD, PSS ;

RAO, PK .

APPLIED CATALYSIS, 1991, 73 (01) :L1-L5

[27] Ruthenium catalysts for ammonia synthesis at high pressures: Preparation, characterization, and power-law kinetics [J].

Rosowski, F ;

Hornung, A ;

Hinrichsen, O ;

Herein, D ;

Muhler, M ;

Ertl, G .

APPLIED CATALYSIS A-GENERAL, 1997, 151 (02) :443-460

[28] Characterisation of Ru/C catalysts for ammonia synthesis by oxygen chemisorption [J].

Rossetti, I ;

Pernicone, N ;

Forni, L .

APPLIED CATALYSIS A-GENERAL, 2003, 248 (1-2) :97-103

[29] Promoters effect in Ru/C ammonia synthesis catalyst [J].

Rossetti, I ;

Pernicone, N ;

Forni, L .

APPLIED CATALYSIS A-GENERAL, 2001, 208 (1-2) :271-278

[30]

TENNISON SR, 1991, CATALYTIC AMMONIA SY, P303

← 1 2 3 4 →