Reaction of TiCl4 with diethyl ether. Experimental and quantum-chemical study
作者:N. V. Shugurova、E. I. Davydova、T. N. Sevast’yanova、A. D. Misharev、M. Bodensteiner、M. Scheer
DOI:10.1134/s1070363216010035
日期:2016.1
The reaction of titanium tetrachloride with diethylether at various ratios of components and temperatures was studied by the NMR and mass spectrometry methods. The TiCl4·2Et2O complex does not pass in the gas phase. Formation of ethoxytrichlorotitanium among reaction products was established by the X-ray structure analysis. The model of conversion from initial components to titanium dioxide was suggested
Some synthesis aspects for poorly crystalline porous sodium titanium silicate
作者:D. V. Tarnovsky、I. K. Chepurna、S. I. Meleshevych、V. I. Davydov、I. V. Romanova
DOI:10.1007/s11164-022-04691-z
日期:2022.5
New approaches to synthesize poorly crystalline titanium silicate Na2Ti2SiO7·2H2O which possesses the selectivity to adsorb cesium radionuclides by using inorganic precursors have been proposed. The mechanism of the reaction in this system has been studied. It has been found the optimal ratio of the reagents in the reaction. The experiments proved that the amount of alkali in the reaction has to meet
提出了利用无机前驱体合成具有选择性吸附铯放射性核素的低结晶硅酸钛Na 2 Ti 2 SiO 7 ·2H 2 O的新方法。对该体系的反应机理进行了研究。已发现反应中试剂的最佳比例。实验证明,反应中碱的用量必须满足化学计量要求和H 2 O 2 /TiO 2的比值。超过 3 个似乎是不必要的。使用 X 射线粉末衍射 (XRD)、低温氮吸附(Brunauer-Emmett-Teller 和 Barrett-Joyner-Halenda 方法)、原子吸附分析和辐射测量法对所得样品的形态进行了表征。由硅酸钛制成的吸附剂在最佳温度下的吸附能力已被证明与其众所周知的晶体结构类似物和通过另一种方法获得的相同材料的吸附能力相同。在 Langmuir、Freundlich 和 Temkin 模型中,Langmuir 模型非常适合这种吸附剂对 Cs +的吸附。