Abstract

Layered perovskite-like oxides NaLaTiO₄ and K₂La₂Ti₃O₁₀, which correspond to the Ruddlesden–Popper phases, are synthesized using various amounts (30, 100, and 1000%) of excess alkali metal carbonate in the batch and transformed into the corresponding protonated forms HLaTiO₄ and H₂La₂Ti₃O₁₀ through the ion exchange in an aqueous solution of 0.1 M nitric acid. It is determined that an increase in the carbonate content in the reaction mixture does not affect the crystal structures of final compounds; however, it affects the morphology of HLaTiO₄ polycrystals in the case of NaLaTiO₄ protonation, that can be used for the targeted synthesis of particles with the pore size of 25 to 500 nm.

中文翻译：

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层状钙钛矿型钛酸盐HLaTiO 4多孔颗粒的制备

摘要

使用批料中各种量（30％，100％和1000％）的过量碱金属碳酸盐合成相应于Ruddlesden-Popper相的层状钙钛矿状氧化物NaLaTiO ₄和K ₂ La ₂ Ti ₃ O ₁₀。通过在0.1 M硝酸水溶液中进行离子交换，生成相应的质子化形式HLaTiO ₄和H ₂ La ₂ Ti ₃ O ₁₀。可以确定，反应混合物中碳酸盐含量的增加不会影响最终化合物的晶体结构。但是，它会影响HLaTiO ₄的形貌在NaLaTiO ₄质子化的情况下，这些多晶体可用于目标合成孔径为25至500 nm的颗粒。