The preparation and mechanism studies on ultrafine porous titania

Authors
Zhao, JZ Wang, ZC Wang, LW Xue, LJ Liu, YH Yang, H Zhao, MY
Citation
Jz. Zhao et al., The preparation and mechanism studies on ultrafine porous titania, CHEM J CH U, 20(1), 1999, pp. 115-118
Citations number
12
Categorie Soggetti
Chemistry
Journal title
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN journal
02510790 → ACNP
Volume
20
Issue
1
Year of publication
1999
Pages
115 - 118
Database
ISI
SICI code
0251-0790(199901)20:1<115:TPAMSO>2.0.ZU;2-O
Abstract
Ultrafine porous titania powders were synthesized by precipitating method w ith titania sulfate and ammonia as raw materials and ethanol as dispersing agent. The influences of pH and reaction temperatures on the texture of tit ania precursor powders were investigated. The causes of surface area reduct ion with calcining temperatures are grain growth and phase transformation, Micropores could be sintered as enhancing calcining temperature. From TEM p hotos space network of porous titania is clearly seen.