Preparation, characterization and catalytic performances of highly dispersed supported TiO2/SiO2 catalysts in biodiesel production

被引：14

作者：

Cozzolino, M. ^{[1
]}

Tesser, R. ^{[1
]}

Di Serio, M. ^{[1
]}

Ledda, M. ^{[2
]}

Minutillo, G. ^{[1
]}

Santacesaria, E. ^{[1
]}

机构：

[1] Univ Naples Federico II, Dept Chem, Via Cintia,Compl Univ Monte S Angelo, I-80126 Naples, Italy

[2] ASER Srl, Cernusco Sul Naviglio, Italy

来源：

SCIENTIFIC BASES FOR THE PREPARATION OF HETEROGENEOUS CATALYSTS, PROCEEDINGS OF THE 9TH INTERNATIONAL SYMPOSIUM | 2006年 / 162卷

关键词：

D O I：

10.1016/S0167-2991(06)80920-1

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：

The present contribution describes the preparation of. highly dispersed TiO2/SiO2 catalysts by Grafting different amounts of Ti(O-Pr-i)(4), dissolved in three different solvents: dioxane, toluene and isopropanol. A detailed characterization study of the surface properties has been performed by using BET measurements, Laser-RAMAN and XPS spectroscopies, then, in order to correlate the acid properties, evaluated in terms of number and strenght of acid sites by NH3-TPD analyses, with the catalytic trends observed in the transesterification of refined oils with methanol. As it will be seen, grafted titania on silica strongly modifies the original surface and generates new acid sites able to promote the target reaction.

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收藏

页码：299 / 306

页数：8

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