摘要
以ＳｉＯ２为基质，ＣｅＯ２ＴｉＯ２为包覆物质，采用溶胶凝胶法制备ＣｅＯ２ＴｉＯ２／ＳｉＯ２表面复合物，并对所制复合物进行除氟测试。用扫描电镜（ＳＥＭ）观察表面形貌，讨论实验环境、试剂用量等因素对ＣｅＯ２ＴｉＯ２／ＳｉＯ２制备及除氟性能的影响，结果表明：ｎＴｉ（ＯＣ４Ｈ９）４／ｎＣｅＣｌ３·７Ｈ２Ｏ＝１、ｎＣＨ３ＣＯＯＨ／ｎＴｉ（ＯＣ４Ｈ９）４＝４５、ｎＣ３Ｈ８Ｏ３／ｎＴｉ（Ｏ４Ｈ９）４＝０３、ＲＨ＝９５％，热处理温度１１０℃时，所制ＣｅＯ２ＴｉＯ２／ＳｉＯ２对Ｆ－的吸附容量（ｑ）为２１４ｍｇ／ｇ，去除率（Ｅ）为８５６％。
The CeO_2TiO_2/SiO_2 surface composites were prepared by solgel method using SiO_2 as body and CeO_2TiO_2 as coating film. The properties for fluorine ion removal of the composites and the influences of preparing conditions on the coating quality and removal capacities of F- were studied. SEM was applied to study the surfcicial morphologies of the obtained films. It is proved that nTi(OC_4H_9)_4/nCeCl_3·7H_2O=1, nCH_3COOH/nTi(OC_4H_9)_4=45, nC_3H8O3/nTi(OC_4H_9)_4=03, RH=95% and t110 ℃ are the acceptable conditions to get the surface composite whose adsobent capacity(q) and removal ratio(E) for F- are 214 mg/g and 856% respectively.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1998年第2期149-153,共5页
Journal of the Chinese Society of Rare Earths
基金
天津市自然科学基金
关键词
二氧化铈
除氟剂
二氧化钛
含氟水处理
水处理
Rare earths, Cerium oxide, Solgel method, Fluorine ion adsorption, Surface composite
