Preparation of rutile TiO2 by hydrolysis of TiOCl2 solution: experiment and theory
文献类型：期刊论文
| 作者 | Liu, Yahui1,2; Shao, Dawei1,2,3; Wang, Weijing1,2; Yi, Lingyun1,2; Chen, Desheng1,2; Zhao, Hongxin1,2; Wu, Jingyi4,5; Qi, Tao1,2; Cao, Chengbo3 |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:64页码:59541-59549 |
| 英文摘要 | Titanium slag with a perovskite phase (CaTiO3) is difficult to use in traditional titanium dioxide production. Herein, we demonstrate that HCl can decompose CaTiO3 with a high acidolysis ratio of >97 wt% to obtain a TiOCl2 solution. With subsequent hydrolysis and calcination, rutile TiO2 was synthesised in one step without crystalline-structure transformation. As hydrolysis of the TiOCl2 solution to prepare metatitanic acid (H2TiO3) is an essential step in the process, a simulated pure TiOCl2 solution (prepared from TiCl4 and H2O) was confirmed to have the same structure in water as HCl-treated CaTiO3 slag by Raman spectroscopy. The TiOCl2 solution was also concluded to have the Ti compound cluster of (Ti2O2)(H2O)(4)Cl-4, based on DFT calculations from the Raman data and the curve fit for the hydrolysis ratio. By elucidating the relationship between the H2TiO3 particle size and the concentration of Ti4+ and HCl, we identified the nuclear energy as -19.46 kJ mol(-1). Moreover, a complete scheme for the production of rutile TiO2, induced by TiOCl2 solution hydrolysis, was proposed. Periodic structures show the feasibility of the following transformation occurring through a simple structural rearrangement: (Ti2O2)(H2O)(4)Cl-4 (in solution)-Ti(OH)(H2O)(2)Cl-3 (with addition of HCl)-Ti(OH)(2)Cl-2 (1-dimentional growth and removal of HCl)-rutile-type Ti(OH)(2)Cl-2 (stack)-rutile TiO2 (with removal of HCl). |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35605]  |
| 专题 | 化学研究所_分子纳米结构与纳米技术实验室 |
| 作者单位 | 1.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Shandong Univ, Sch Chem & Chem Engn, Jinan 250061, Peoples R China 4.Inst Chem, Natl Lab Mol Sci, Beijing 100190, Peoples R China 5.Beijing Chinese Acad Sci CAS, Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yahui,Shao, Dawei,Wang, Weijing,et al. Preparation of rutile TiO2 by hydrolysis of TiOCl2 solution: experiment and theory[J]. RSC ADVANCES,2016,6(64):59541-59549. |
| APA | Liu, Yahui.,Shao, Dawei.,Wang, Weijing.,Yi, Lingyun.,Chen, Desheng.,...&Cao, Chengbo.(2016).Preparation of rutile TiO2 by hydrolysis of TiOCl2 solution: experiment and theory.RSC ADVANCES,6(64),59541-59549. |
| MLA | Liu, Yahui,et al."Preparation of rutile TiO2 by hydrolysis of TiOCl2 solution: experiment and theory".RSC ADVANCES 6.64(2016):59541-59549. |
入库方式： OAI收割
来源：化学研究所
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