Preparation of rutile TiO2 by hydrolysis of TiOCl2 solution: experiment and theory
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
2016
发表期刊RSC ADVANCES
ISSN2046-2069
卷号6期号:64页码:59541-59549
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).
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c6ra04386k
收录类别SCI
语种英语
关键词[WOS]TITANIUM-DIOXIDE ; HYDROTHERMAL PREPARATION ; CONTROLLABLE PHASE ; PANZHIHUA ILMENITE ; SULFURIC-ACID ; TICL4 ; NANOPARTICLES ; SULFATE ; PIGMENT ; PRECIPITATION
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
项目资助者Major State Basic Research Development Program of China(2013CB632604) ; National Science Foundation for Distinguished Young Scholars of China(51125018) ; National Natural Science Foundation of China(51402303 ; 21403243 ; 51504230 ; 21506233)
WOS记录号WOS:000379350100084
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21243
专题湿法冶金清洁生产技术国家工程实验室
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
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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.
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