ION-SCATTERING AND ELECTRON SPECTROSCOPIC STUDY OF CATALYSTS PREPARED BY ADSORPTION OF MOLYBDATE ON ALUMINA

被引：18

作者：

MULCAHY, FM ^{[1
]}

HOUALLA, M ^{[1
]}

HERCULES, DM ^{[1
]}

机构：

[1] UNIV PITTSBURGH,DEPT CHEM,PITTSBURGH,PA 15260

来源：

ANALYTICAL CHEMISTRY | 1990年 / 62卷 / 20期

关键词：

D O I：

10.1021/ac00219a015

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A series of Mo/Al2O3 catalysts was prepared by using an equilibrium adsorption method. The dispersion of the molybdenum phase and coverage of the alumina surface by Mo species as a function of Mo loading were monitored by ion scattering spectroscopy (ISS) and X-ray photoelectron spectroscopy (XPS, ESCA). By modeling changes in the ISS Mo/Al Intensity ratio as a function of molybdenum coverage, It Is shown that, for Mo/Al203 catalysts prepared by equilibrium adsorption, coverage of the alumina surface should be complete at a loading of 47 × 1013 Mo atoms/cm2 for calcined catalysts and 55 × 1013 Mo atoms/cm2 for dried catalysts. These values agree with those obtained from modeling of the ISS Al/O intensity ratio as a function of Mo loading. © 1990, American Chemical Society. All rights reserved.

引用

页码：2232 / 2236

页数：5

共 36 条

[1]

ARIAS B, 1984, 9TH P IB S CAT LISB, P1064

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