The resins modified with positive ions of weaker affinity for resins have a better catalytic ability of water dissociation than those modified with positive ions of stronger affinity.

• 树脂经与其亲和力较弱的阳离子改性后，强化了其催化解离纯水的能力，而用与其亲和力较强的阳离子改性后则表现较差。