A METHOD FOR MEASURING THE TITANIA SURFACE-AREA ON MIXED OXIDES OF TITANIA AND SILICA

被引：30

作者：

BIAGLOW, AI ^{[1
]}

GORTE, RJ ^{[1
]}

SRINIVASAN, S ^{[1
]}

DATYE, AK ^{[1
]}

机构：

[1] UNIV NEW MEXICO,DEPT CHEM ENGN,ALBUQUERQUE,NM 87131

来源：

CATALYSIS LETTERS | 1992年 / 13卷 / 04期

关键词：

TITANIA; SILICA; 2-PROPANOL ADSORPTION; TEMPERATURE-PROGRAMMED-DESORPTION; SURFACE-AREA-MEASUREMENTS;

D O I：

10.1007/BF00765033

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：

We have used temperature-programmed desorption (TPD) and thermogravimetric analysis (TGA) of 2-propanol to characterize several silica, titania, and silica-supported titania samples. Upon evacuation, most of the 2-propanol desorbed intact from the silica samples. This is in contrast to the results on titania and on silica-supported titania, where a significant amount remained on the surface following evacuation, with a fraction of this reacting to propene and water. The coverages of 2-propanol are approximately proportional to the titania surface area, corresponding to between 2.4 and 6.1 x 10(18) molecules/m2 of titania, depending on the form of the titania. The results suggest that selective adsorption of 2-propanol may be useful for determining the surface area of titania in titania-silicates.

引用

页码：313 / 321

页数：9

共 13 条

[1] DESIGN PARAMETERS FOR TEMPERATURE-PROGRAMMED DESORPTION FROM A PACKED-BED [J].