| TiO2离子筛的制备及表征 |
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| 引用本文： | 李少鹏,张钦辉,孙淑英,尹先升,于建国.TiO2离子筛的制备及表征[J].天津大学学报(自然科学与工程技术版),2007,40(4):453-456. |
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| 作者姓名： | 李少鹏 张钦辉 孙淑英 尹先升 于建国 |
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| 作者单位： | 华东理工大学化学工程联合国家重点实验室,上海200237 |
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| 基金项目： | 国家自然科学基金;上海市纳米科技专项基金;上海市科委资助项目 |
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| 摘 要： | 采用商品二氧化钛（P25）经过改性、浸渍、焙烧、酸洗和干燥过程制备离子筛，并通过X-射线衍射对样品晶相结构进行了表征，进一步对锂离子的吸附性能进行了研究．结果表明，P25在1173K、焙烧8h后得到了锐钛相TiO2，进一步得到对锂离子具有特殊记忆效应的离子筛；随着浸渍过程Li与Ti摩尔比的增加，前驱体中Li—Ti—O固熔体的量逐渐增加，主要物质为立方晶系的Li1.33Ti1.66O4；经酸浸脱得到的离子筛为锐钛相TiO2，对锂离子的平衡吸附量达到0．7mmol／g．
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| 关 键 词： | 二氧化钛 离子筛 锂离子 吸附 分离 |
| 文章编号： | 0493-2137（2007）04-0453-04 |
| 修稿时间： | 2006-11-082006-12-29 |
Preparation and Characterization of Titania Ion-Sieves |
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| LI Shao-peng,ZHANG Qin-hui,SUN Shu-ying,YIN Xian-sheng,YU Jian-guo.Preparation and Characterization of Titania Ion-Sieves[J].Journal of Tianjin University(Science and Technology),2007,40(4):453-456. |
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| Authors: | LI Shao-peng ZHANG Qin-hui SUN Shu-ying YIN Xian-sheng YU Jian-guo |
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| Institution: | State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Titania ion-sieves were prepared through the process of transnaturing,impregnation,calcination,acid treatment,and dryness of commercial titania(P25).The crystal structure and lithium ion adsorption capacity were characterized by X-ray diffraction(XRD) and adsorption kinetics measurement,respectively.The results show that the commercial titania changes to rutile form of TiO2 after calcination for 8 h at 1 173 K;with the increase of molar ratio of Li to Ti in the precursor,the content of Li-Ti-O solid fusion increases and mainly presents the cubic form of Li1.33Ti1.66O4;after nitric acid treatment,the titania ion-seives with rutile phase were prepared and the equilibrium adsorption amount of lithium ion is 0.7 mmol/g. |
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| Keywords: | titania(TiO2) ion-sieve lithium ion adsorption separation |
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