采用料浆浇注法制备了硅藻土-莫来石(K-M)陶瓷支承体管,溶胶-凝胶法在其上制备了负载型TiO2复合膜,并采用ESEM、压汞法,IR和纯气体渗透性能测试装置对其进行了表征.结果表明:TiO2/K-M复合陶瓷膜成膜情况良好,孔径分布比较均匀;支承体和TiO2膜孔径分别集中分布在2.01μm和37nm左右;TiO2膜层与支承体存在键联和相互作用;TiO2膜层的气体渗透为努森扩散和粘性流共同控制.
参考文献
| [1] | Anderson M A;Gieselmann M J;Xu Q Y .Titaina and alumina ceramic membranes[J].Journal of Membrane Science,1998,39:243-258. |
| [2] | Michael T H;Byers C H .Effect of solvent on the homogeneous precipitation of titania by titanium ethoxide hydrolysis[J].Journal of Non-Crystalline Solids,1988,103:49-64. |
| [3] | Hwung Y H;Suk W N;Tae H L et al.Properties of the TiO2 membrane prepared by CVD of titanium tetraisoproxide[J].Journal of Membrane Science,1996,111:81-92. |
| [4] | 李青,钟顺和.硅藻土-莫来石复合陶瓷膜支承体的制备及表征[J].催化学报,1999(01):41-44. |
| [5] | 闫继娜;余桂郁;杨南如.溶胶-凝胶法制备TiO2分离膜的研究[J].硅酸盐学报,1997(03):13-17. |
| [6] | 郭清萍;钟顺和 .多孔硅藻土膜支撑体的制备和表征[J].太原工业大学学报,1996,27(z1):91-95. |
| [7] | Tiller F M;Tsai C D .Theory of filtration of ceramics:I Slip casting[J].Journal of the American Ceramic Society,1986,69:882-887. |
| [8] | Abe Y;Sugimoto N;Nagao Y et al.Preparation of monolithic SiO2-TiO2 gels by condensation polymerization of silicic acid and titanium chelatcs[J].Journal of NON-CRYSTALLINE SOLIDS,1988,104:164-169. |
| [9] | Evans R B;Watson G M;Mason E A .Gas transition in porous materials[J].Journal of Chemical Physics,1961,35(06):2076-2083. |
| [10] | Schofield R W;Fane A G;Fell C D.Gas diffusion mechanism through porous materials[A].Perth,1985 |
| [11] | Schofield R W;Fane A G;Fell C J D .Gas and vapor transport through microporous membranes,I Knudscn-Poiscuille transition[J].Journal of Membrane Science,1990,53(02):159-171. |
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