Weakly flocculated aqueous alumina suspensions prepared by the addition of Mg(II) ions
Weakly flocculated aqueous alumina suspensions prepared by the addition of Mg(II) ions
复制标题
通过添加 Mg(II) 离子制备弱絮凝的氧化铝水悬浮液
DOI：
10.1111/j.1151-2916.2000.tb01253.x
复制
发表时间：
2004
影响因子：
3.9
通讯作者：
Tomaž Kosma
中科院分区：
文献类型：
--
作者：
A. Dakskobler;Tomaž Kosma
通过添加阴离子分散剂，在固有的pH条件下制备了分散良好的氧化铝悬浮液。在这种悬浮液中加入适量的醋酸镁，颗粒的表面电荷被中和，这反映在悬浮液的不稳定上。由于镁离子与分散剂的两个解离羧基之间形成配位键，在粒子表面形成一层薄薄的中性层，从而建立了一个不接触的粒子网络，导致了弱絮凝悬浮。
Well-dispersed aqueous alumina suspensions were prepared at an inherent pH via the addition of an anionic dispersant. With the addition of an appropriate amount of magnesium acetate to such a suspension, the surface charge of the particles was neutralized, which was reflected in the destabilization of the slurry. Because of the formation of coordinative bonds between the Mg ion and the two dissociated carboxylic groups of the dispersant, a thin neutral layer was formed on the surface of the particles, which established a nontouching particle network and resulted in a weakly flocculated suspension.