The nature of ruthenium sulfide clusters encaged in a Y zeolite

被引：34

作者：

Moraweck, B ^{[1
]}

Bergeret, G ^{[1
]}

Cattenot, M ^{[1
]}

Kougionas, V ^{[1
]}

Geantet, C ^{[1
]}

Portefaix, JL ^{[1
]}

Zotin, JL ^{[1
]}

Breysse, M ^{[1
]}

机构：

[1] INST RECH CATALYSE,CNRS,F-69626 VILLEURBANNE,FRANCE

来源：

JOURNAL OF CATALYSIS | 1997年 / 165卷 / 01期

关键词：

D O I：

10.1006/jcat.1997.1463

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：

Catalysts of ruthenium sulfide supported in a dealuminated KY zeolite were prepared by ion exchange and subsequent sulfidation using several atmospheres containing sulfur. They were characterized by means of HREM, EDX, TPR, and EXAFS. The activity for the tetralin hydrogenation, carried out in presence of large amounts of H2S (1.85%), was very high and roughly 300 times the activity (expressed per metal atom) of an industrial NiMo/Al2O3 hydrotreating catalyst. A simple modeling of the results obtained by the physicochemical techniques suggests that the active phase consists of clusters of less than 50 ruthenium atoms of a ruthenium sulfide-like phase with very small domains of ruthenium metal. (C) 1997 Academic Press, Inc.

引用

页码：45 / 56

页数：12

共 20 条

[1] PREPARATION AND CHARACTERIZATION OF PALLADIUM - CHROMIUM CATALYSTS GENERATED FROM MIXED SALTS [J].