Abstract

An increase in the concentration of acidic surface groups, the sorption exchange capacity of oxidized coal, and the yield of humic acids by 20–40% due to mechanical action with alkaline and oxidizing alkaline reagents was found. According to the IR-spectroscopic data of coals and the potentiometric titration of acidic groups, a decrease in the concentration of carboxyl groups in aliphatic fragments due to their maximum sorption capacity for metal ions was noted. Humic acids were characterized by a significant increase in the number of oxygen-containing groups and stable polyconjugated heteroaromatic fragments as a result of mechanochemical action.

中文翻译：

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机械化学作用引起的氧化煤结构特征和成分的变化

摘要

由于与碱性和氧化碱性试剂的机械作用，酸性表面基团的浓度、氧化煤的吸附交换能力和腐殖酸的产率增加了 20-40%。根据煤的红外光谱数据和酸性基团的电位滴定，注意到脂肪族碎片中羧基的浓度由于其对金属离子的最大吸附能力而降低。由于机械化学作用，腐殖酸的特征在于含氧基团的数量和稳定的多共轭杂芳族片段的数量显着增加。