Dai Xianyang, Zhan Honglong, Qian Zhiqiang, Li Jun, Liu Zhong, Wu Zhijian
Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences Xining 810008 China
Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province Xining 810008 China.
RSC Adv. 2021 Oct 28;11(55):34988-34995. doi: 10.1039/d1ra06535a. eCollection 2021 Oct 25.
HTiO (HTO) is considered to be one of the most promising adsorbents for lithium recovery from aqueous lithium resources duo to its highest theoretical adsorption capacity. However, its actual adsorption capacity is much lower owing to its unknown structure and incomplete leaching of lithium. After Al is doped into HTiO (HTO-Al), the adsorption capacity of HTO-Al is 32.12 mg g and the dissolution of Ti is 2.53%. HTO-Al has good adsorption selectivity, and all the separation factors are ≫1. Furthermore, HTO-Al also exhibits good cyclic stability and solubility resistance. After 5 cycles, the adsorption capacity remains 29.3 mg g and the dissolution rate is 1.7%. Therefore, HTO-Al has potential application value for recovering Li from aqueous lithium resources.
HTiO（HTO）因其最高的理论吸附容量，被认为是从含锂水资源中回收锂最具潜力的吸附剂之一。然而，由于其结构未知以及锂的浸出不完全，其实际吸附容量要低得多。在将铝掺杂到HTiO（HTO-Al）中后，HTO-Al的吸附容量为32.12毫克/克，钛的溶解率为2.53%。HTO-Al具有良好的吸附选择性，所有分离因子均远大于1。此外，HTO-Al还表现出良好的循环稳定性和耐溶解性。经过5次循环后，吸附容量仍为29.3毫克/克，溶解率为1.7%。因此，HTO-Al在从含锂水资源中回收锂方面具有潜在的应用价值。
