表面Zeta电位与表面吸附—聚沉规则的理论解释

本文系统地研究了α-Fe_2O_3悬浮体在三种不同价态电解质(KCl,CuCl_2 CrCl_3)的不同浓度中,粒子表面双电层的ζ电位和表面的吸附性质。通过实验总结出一、二、三价正离子影响α-Fe_2O_3悬浮体沉降值的规律性,并以此为根据,结合吸附理论论证了沉降值与被吸附电解质价态之间的反比关系,该结论与叔采—哈迪(Schulze-Hardy)经验规则相似。并对溶胶的聚沉规则提出有独到见解的理论解释。

Surface Zeta Potential and Surface Absorption-A Theoretical Explanation of the Rule of Coagulation

The sruface zeta potential of the α-Fe2O3 suspension particles and their surface absorption behaviour were studied serially in three electrolytes with different valences (KC1, CuCl2, CrCl3) and how the cations (ⅠI , Ⅱ,Ⅲ) effect the sedimentation value of the α-Fe2O3 suspension has been reviewed, in terms of which and taking the absorption theory in account it has been proved that the sedimentation value is inversely proportional to the valence of absorbed electrolyte. This conclusion is similar to the schulze-Hardy's empirical rule. Besides, an original view on the law of coagulation was proposed in the paper as well.