Catalysts based on supported 12-molybdophosphoric acid

被引：126

作者：

Vázquez, PG ^{[1
]}

Blanco, MN ^{[1
]}

Cáceres, CV ^{[1
]}

机构：

[1] UNLP, CONICET, CINDECA, RA-1900 La Plata, Buenos Aires, Argentina

来源：

CATALYSIS LETTERS | 1999年 / 60卷 / 04期

关键词：

molybdophosphoric acid; titania; silica; alumina; carbon; equilibrium adsorption impregnation;

D O I：

10.1023/A:1019071410838

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 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 degrees C on silica, 400 degrees C on titania or carbon and 250 degrees C for alumina. The acidity of the supported heteropoly acid decreases in the following order: silica > titania > carbon > alumina.

引用

页码：205 / 215

页数：11

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