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本文用八种交联度相同而孔结构各异的大孔磺酸型树脂,研究了UO_2~(2+)—H~+互扩散及共存Mn(Ⅱ)时的UO_2~(2+)—H~+互扩散传质动力学与孔结构的关系。结果表明,孔径的功用在于变更或引导扩散机制;而比表面对起始阶段的扩散起重要作用;磺酸根-Mn(Ⅱ)圈结合水的减少强化了孔径的功能导致Mn(Ⅱ)的加速传质效应。最后,用表面吸附双电层结构理论作了统一的解释。
In this paper, eight kinds of macroporous sulfonic acid resins with the same degree of cross - linking and different pore structure were used to study the effect of UO_2 ~ (2 +) - H ~ + interdiffusion and coexistence of Mn (Ⅱ) Relationship between H ~ + Interdiffusion Mass Transfer Kinetics and Pore Structure. The results show that the function of pore size is to change or guide the diffusion mechanism, while the specific surface plays an important role in the diffusion of initial phase. The reduction of sulfonate-Mn (Ⅱ) Mass transfer effect. Finally, a uniform explanation is given by using the theory of surface adsorption double-layer structure.