Thermodynamic Characteristics of the Reactions of Formation of Iron and Magnesium Humates in Aqueous Solution

被引：0
|
作者：
Yarkova, T. A. [1 ]
Gyul'maliev, A. M. [2 ]
机构：
[1] Russian Technol Univ, MIREA, Moscow 119571, Russia
[2] Russian Acad Sci, Topchiev Inst Petrochem Synth, Moscow 119071, Russia
来源：
SOLID FUEL CHEMISTRY | 2023年 / 57卷 / 03期
关键词：
humic acids; water-soluble iron and magnesium humates; thermodynamic stability of cations; Pourbaix diagram; electrode potential;
D O I：
10.3103/S036152192301010X
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The thermodynamic stability of iron and magnesium ions at different acidity of an aqueous medium was determined using chemical thermodynamics methods and Pourbaix diagrams. The temperature dependence of the thermodynamic functions of corresponding reactions was calculated. The thermodynamic feasibility of the reactions of replacing potassium and sodium ions in aqueous solutions of humic acid salts containing carboxyl and hydroxyl functional groups with iron and magnesium ions was established. The resulting water-soluble iron and magnesium humates can have a high potential for practical use.
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页码：163 / 169
页数：7
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