Expressions of supersaturation in crystallization studies
Expressions of supersaturation in crystallization studies
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DOI：
10.1016/0009-2509(77)80114-0
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发表时间：
1977
影响因子：
4.7
通讯作者：
J. Mullin;O. Söhnel
中科院分区：
文献类型：
--
作者：
J. Mullin;O. Söhnel
从热力学的观点考虑了二元体系中结晶的驱动力。精确的关系，推导出特定的情况下，与常用的过饱和度计算溶液浓度的表达式进行比较。计算了忽略活度系数比时所引起的误差。强调了在电解质溶液过饱和度的表达式中，必须考虑分子离解成的离子数。给出了几种无机盐从水溶液中结晶的实例。
The driving force for crystallization in a binary system is considered from the thermodynamic viewpoint. Exact relationships, derived for particular cases, are compared with commonly used expressions of supersaturation calculated from solution concentrations. Errors incurred when activity coefficient ratios are ignored are evaluated. The need to incorporate the number of ions, into which a molecule dissociates, in the expressions of supersaturation for electrolyte solutions is emphasized. Examples are given for the crystallization of several inorganic salts from aqueous solution.