Abstract

The conditions for the preparation of framework titanosilicates with zorite and ivanyukite structures were studied. The preparation of a gel-like precursor for hydrothermal synthesis is preferably performed from solutions. An excess amount of silicon relative to titanium(IV) and an alkaline medium with pH 10.5–12.5 provide oversaturation of the salt mass in the Na₂O–K₂O–TiO₂–H₂SO₄–SiO₂–H₂O system. This makes it possible to regulate phase formation, ensuring the stability of the structure and surface properties of the final products. To inhibit titanium(IV) hydrolysis, the reduction Ti⁴⁺ → Ti³⁺ is performed. This technique leads to the formation of a monophase precipitate.

中文翻译：

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水热合成碱性钛硅酸盐的前驱体的制备

摘要

研究了制备具有铁氧体和钠钙铁矿结构的骨架钛硅酸盐的条件。用于水热合成的凝胶状前体的制备优选由溶液进行。相对于钛（IV）过量的硅和pH 10.5–12.5的碱性介质会导致Na ₂ O–K ₂ O–TiO ₂ –H ₂ SO ₄ –SiO ₂ –H ₂ O中盐质量的过饱和。系统。这样就可以调节相的形成，确保最终产品的结构稳定性和表面性能。为了抑制钛（IV）的水解，还原Ti ⁴⁺ →Ti ³⁺被执行。该技术导致单相沉淀物的形成。