STRUCTURE AND CATALYTIC PROPERTIES OF SILICA-SUPPORTED POLYOXOMOLYBDATES .3. 12-MOLYBDOSILICIC ACID CATALYSTS - VIBRATIONAL STUDY OF THE DISPERSION EFFECT AND NATURE OF THE MO SPECIES IN INTERACTION WITH THE SILICA SUPPORT

被引：62

作者：

ROCCHICCIOLIDELTCHEFF, C

AMIROUCHE, M

FOURNIER, M

机构：

[1] Laboratoire de Chimie des métaux de transition (URA 419), Université Pierre et Marie Curie, 75252 Paris Cedex, Case 42, 4, place Jussieu

来源：

JOURNAL OF CATALYSIS | 1992年 / 138卷 / 02期

关键词：

D O I：

10.1016/0021-9517(92)90296-T

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：

Silica-supported 12-molybdosilicic acid catalysts prepared by impregnation are studied by IR and Raman spectrometries as a function of the Mo content (Mo wt% varying from 24.6 to 1.2). A dispersion effect is evidenced, especially by Raman spectrometry. The 12-molybdosilicate anion in interaction with the silica support is preserved down to 2% Mo. The results are discussed in relation with 29Si magic-angle-spinning NMR and reactivity studies in the methanol oxidation. © 1992.

引用

页码：445 / 456

页数：12

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