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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Preparation of submicron-sized porous titanium oxide particles by the swelling process
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Preparation of submicron-sized porous titanium oxide particles by the swelling process

机译：submicron-sized多孔钛的制备氧化物颗粒的膨胀过程

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摘要

A method to prepare submicron-sized porous titanium oxide (TiO2) particles is studied in this work. Polystyrene (PS) template particles were prepared by emulsifier-free emulsion polymerization. The polymer templates dispersed in the aqueous solution have been used for entrapping titanium(IV) isopropoxide (TTIP), by the swelling process in a suitable solvent mixture containing a swelling solvent (good solvent or poor solvent), a TiO2 precursor (TTIP), and a chelating agent (AcAc), within the polymer templates, followed by hydrolysis/condensation reaction of TTIP confined in PS template particles by the addition of the chelating agent. The influence of various reaction parameters, such as mixtures of different weight ratios between the PS particles and desiccative TTIP, AcAc amounts, and the swelling solvent amounts and type, on the size, bulk, and composition of the particles was investigated. Porous TiO2 particles have been prepared by thermal decomposition of the PS templates at 500 °C.
机译：一个方法来准备submicron-sized多孔研究了氧化钛(二氧化钛)粒子这项工作。由emulsifier-free乳液吗聚合。在水溶液中已经使用了诱骗(IV)钛异丙醇盐(方式确定)肿胀过程在合适的溶剂中包含肿胀溶剂混合物(好溶剂或溶剂差),二氧化钛的前兆(方式确定)和螯合剂(中航商用飞机有限公司)内聚合物模板,紧随其后水解缩合反应的方式确定在PS模板粒子的添加螯合剂。反应参数,如混合物不同的重量PS微粒之间的比率和去湿的方式确定,中航商用飞机有限公司,肿胀溶剂量和类型,大小,散装,粒子的组成调查。由PS的热分解模板在500°C。

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