Abstract

Using the sol–gel method, by reacting solutions of maleic acid and potassium permanganate, samples have been obtained with a turbostat stacking of layers, which is characteristic of the birnessite structure. Using X-ray phase and thermogravimetric analysis, Raman spectroscopy, and low-temperature nitrogen adsorption, the dependence of the textural–structural characteristics of the synthesized materials on the temperature of thermal modification (150, 360°C) and sample composition (Sr-form, H-form) has been shown. It has been found that all samples are characterized by a mesoporous texture. It is shown that the water content in the samples is closely related to the quantitative determination of the specific surface area: the more water, the greater the S_BET value.

中文翻译：

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氧化锰的溶胶-凝胶合成和结构特征：热改性温度的影响

摘要

使用溶胶-凝胶法，通过马来酸和高锰酸钾溶液的反应，通过涡轮稳定器堆叠层获得样品，这是水钠锰矿结构的特征。使用 X 射线相和热重分析、拉曼光谱和低温氮吸附，合成材料的织构-结构特征对热改性温度 (150, 360°C) 和样品成分 (Sr-形式，H形式）已被显示。已发现所有样品均具有中孔结构的特征。结果表明，样品中的含水量与比表面积的定量测定密切相关：含水量越多，S _BET值越大。