MOO3/MGO SYSTEMS - EFFECT OF PREPARATION METHOD ON THEIR PHYSICOCHEMICAL PROPERTIES

被引：31

作者：

LLORENTE, JMM

RIVES, V

MALET, P

GILLLAMBIAS, FJ

机构：

[1] UNIV SALAMANCA,FAC FARM,DEPT QUIM INORGAN,E-37007 SALAMANCA,SPAIN

[2] UNIV SEVILLA,FAC QUIM,DEPT QUIM INORGAN,E-41012 SEVILLE,SPAIN

[3] UNIV SANTIAGO CHILE,FAC CIENCIA,DEPT QUIM,SANTIAGO,CHILE

来源：

JOURNAL OF CATALYSIS | 1992年 / 135卷 / 01期

关键词：

D O I：

10.1016/0021-9517(92)90264-I

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：

MoO3/MgO systems have been prepared and characterized by X-ray diffraction, specific surface area and porosity measurements, visible-ultraviolet (diffuse reflectance) and Fourier transform infrared spectroscopies, differential thermal analysis, determination of the surface isoelectric point, and temperature-programmed reduction to analyze how the preparation method and pretreatments regulate their surface properties. Formation of MgMoO4 on the surface of the support under certain experimental conditions stabilizes the surface of the support, thus avoiding its sintering during calcination at high temperature; in addition, reduction of Mo(VI) species in this case is more difficult, taking place at temperatures higher than those for bulk or supported molybdena. © 1992.

引用

页码：1 / 12

页数：12

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[1] COBALT-MOLYBDENUM-ALUMINA HYDRODESULPHURISATION CATALYSTS .1. A SPECTROSCOPIC AND MAGNETIC STUDY OF FRESH CATALYST AND MODEL COMPOUNDS [J].