Preparation and characterization of high surface area alumina-titania solid acids
UNSPECIFIED (1997) Preparation and characterization of high surface area alumina-titania solid acids. JOURNAL OF MATERIALS SCIENCE, 32 (21). pp. 5583-5592. ISSN 0022-2461Full text not available from this repository.
As part of a systematic study of solid acids, a series of high surface area single-phase alumina-titania mixed oxides were prepared. These materials were found to have higher surface areas, greater porosity and enhanced specific surface acidity than comparable alumina-titania solid acids reported in the literature. The thermal stability of the phases and their textural and physicochemical properties have been studied over a range of Al/Ti compositions and for calcinations up to 1000 degrees C. The samples were characterized by differential thermal analysis-thermogravimetry, X-ray diffraction, nitrogen physisorption and X-ray photoelectron spectroscopy. Surface acidity was measured by temperature programmed desorption and in situ Fourier transform-infrared spectroscopy, using ammonia as a probe molecule. The strength and density of the acid sites were proportional to the Ti-content.
|Item Type:||Journal Article|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)|
|Journal or Publication Title:||JOURNAL OF MATERIALS SCIENCE|
|Publisher:||CHAPMAN HALL LTD|
|Date:||1 November 1997|
|Number of Pages:||10|
|Page Range:||pp. 5583-5592|
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