Catalysts based on supported 12-molybdophosphoric acid

被引：0
|
作者：
Patricia G. Vázquez
Mirta N. Blanco
Carmen V. Cáceres
机构：
[1] UNLP-CONICET,Centro de Investigación y Desarrollo en Procesos Catalíticos (CINDECA)
[2] 47 No. 257,undefined
来源：
Catalysis Letters | 1999年 / 60卷
关键词：
molybdophosphoric acid; titania; silica; alumina; carbon; equilibrium adsorption impregnation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Catalysts preparation by equilibrium adsorption of 12-molybdophosphoric acid in water–ethanol solutions onto silica, titania, carbon and alumina is studied. The solute/support interaction follows the decreasing order: alumina, carbon, silica and titania. It is observed that the molybdophosphoric acid keeps its Keggin-type structure after being supported at room temperature on all supports. This species is stable up to 500°C on silica, 400°C on titania or carbon and 250°C for alumina. The acidity of the supported heteropoly acid decreases in the following order: silica>titania>carbon>alumina.
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页码：205 / 215
页数：10
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