화학공학소재연구정보센터
Chinese Journal of Chemical Engineering, Vol.15, No.4, 616-618, 2007
Preparation of macroporous TiO2 ceramic based on membrane jet-flow emulsification
A novel method to prepare macroporous TiO2 ceramic, based on membrane emulsification was reported. To solve the paradox between the instability of nonaqueous emulsion and long emulsification time required by the membrane emulsification, a two-stage ceramic membrane jet-flow emulsification was proposed. Discussion was conducted on the evolution of droplet size with time, which followed the Ostwald ripening theory. And a monodispersed nonaqueous emulsion with an average droplet size of 1.6 mu m could be prepared. Using the emulsion as a template, TiO2 ceramics with an average pore size of 1.1 mu m were obtained. The material could be prospectively used for preparation of catalysts, adsorbents, and membranes.