三水铝石
溶解度
化学
溶解
无机化学
碱金属
离子
溶剂化
铝酸盐
溶解度平衡
平衡常数
焓
矿物学
物理化学
高岭石
有机化学
热力学
材料科学
冶金
水泥
物理
作者
Jianwei Guo,Zhi‐Hao Shi,Zhenjie Cui,Zhi Wang,Jianjun Cao,Xuzhong Gong
标识
DOI:10.1016/j.cplett.2021.138484
摘要
The equilibrium solubility of gibbsite in choline was measured and thee quilibrium constant was obtained. Gibbsite was more likely to dissolve in choline compared with NaOH and the dissolution enthalpy was 17.845 kJ/mol. Ion solvation model which can express the equilibrium solubility within the entire alkali concentration range was established and verified by measuring conductivity, solubility parameters. The hydration ion number was obtained 4.83 at 70 °C which was reasonable. The ionic composition of the aluminate solution was studied in choline. With the increase of alkali concentration, Al(OH)5− and double oxygen bridged dimer Al2O8H64− appear and coexist with tetracoordinated Al(OH)4−.
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