The acid-base behavior of zinc sulfate electrolytes: The temperature effect
作者： Weidong Wang , David B. Breisinger
DOI: 10.1007/S11663-998-0037-7
关键词:
摘要: The pH of both synthetic zinc sulfate solutions various compositions and commercial plant electrolytes was measured over a range temperatures. A model for the solution thermodynamics has been developed to predict speciation, temperature, concentration effects on pH. It found from thermodynamic predictions measurements that electrolytes, in absence free acid, drops with increasing temperature. pH-temperature behavior largely dominated by hydrolysis. small amounts acid increased then decreased temperature interest. This explained taking into account additional bisulfate/sulfate equilibrium and/or ZnSO4 ion pairing overall behavior. Based correlation between measurements, it is evident dinuclear species Zn2(OH)3+ exists at much higher than Zn(OH)+ ions dominates solution. Speciation acid/base composition solution, against 100 °C, were also predicted. Kidd creek (Falconbridge Limited, Timmins, Canada) CEZinc (Noranda Valleyfield, saturating ZnO °C allowing cool. first slightly dropped maximum 4.2. By including involving Al3+, Mg2+, Mn2+, Na+ calculation, again correlated electrolytes.
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