Matrices containing lithium aluminates

Provided is a particulate composition comprising a collection of resin beads and LiX*2Al (OH) 3* nH2O, wherein n is 0 to 10, wherein X is a halogen, wherein the resin beads contain polymer having 0.5to 3 equivalents of amine pendant groups per liter of the particulate composition, wherein the resin beads have average pore diameter of 5 to 100 nm, wherein the collection of resin beads has harmonicmean particle diameter of 200-1000 micrometers; wherein the collection of resin beads has surface area of 20 to 150 m2/g; and wherein aluminum is present in an amount of 14.5% percent or higher, by weight of aluminum atoms based on the total weight of the particulate composition. Also provided is a method of removing lithium from brine using such a composition. 提供了一种微粒组合物，所述微粒组合物包含树脂珠的集合体和LiX·2Al(OH)·nHO，其中n为0至10，其中X为卤素，其中所述树脂珠含有聚合物，所述聚合物具有每升所述微粒组合物0.5至3当量的胺侧基，其中所述树脂珠具有5至100nm的平均孔径，其中所述树脂珠的集合体具有200-1000微米的调和平均粒径；其中所述树脂珠的集合体具有20至150m/g的表面积；并且其中铝以基于所述微粒组合物的总重量的14.5重量％百分比或更高的铝原子的量存在。还提供了一种使用此种组合物从盐水中除去锂的方法。