化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (10) : 163-166.

科学研究

H₂TiO₃的制备及锂吸附性能研究

许惠, 宋应华, 张杰

作者信息 +

Synthesis and lithium adsorption property of H₂TiO₃

Xu Hui, Song Yinghua, Zhang Jie

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文章历史 +

Received		Published
2018-11-11		2019-10-20
Issue Date	Revised Date
2019-11-09	2018-11-11

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摘要

以碳酸锂和锐钛型TiO₂为原料,采用传统高温固相法合成了Li₂TiO₃前驱体。经酸浸脱锂后得到对Li⁺具有特殊选择性吸附的吸附剂H₂TiO₃,采用X射线衍射、扫描电镜、吸附动力学及共存金属离子的分配系数等手段对样品的晶相结构和Li⁺选择性吸附性能进行了研究。结果表明:煅烧温度对目标材料的结构与性能有一定影响,由700℃煅烧8h制备出的Li₂TiO₃,在0.5mol/L盐酸作用下Li的脱出率为98.82%,Ti的溶损率为0.95%。吸附剂的最大吸附容量达到33.4mg/g,并具有较好的Li⁺选择性。

Abstract

The Li₂TiO₃ precursor was synthesized by a high temperature solid state method using lithium carbonate and anatase titanium dioxide as raw materials.H₂TiO₃ adsorbents with Li⁺ selective adsorption property were prepared by the acid treatment process to extract Li⁺ from Li₂TiO₃ precursors.As-prepared samples were characterized by XRD,SEM and Li⁺ selective adsorption measurements,respectively.The results shown that calcination temperature had a considerable effect on the structure and composition of precursors.The Li and Ti extraction ratios of the precursor Li₂TiO₃ synthesized at 700℃ for 8h were 98.82% and 0.95% after acid treatment (0.5mol/L HCl).The maximum adsorptive capacity of H₂TiO₃ was about 33.4mg/g and had good selection for Li⁺.

关键词

吸附剂 / H₂TiO₃ / 吸附 / 锂

Key words

adsorbent / H₂TiO₃ / adsorption / lithium

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H₂TiO₃的制备及锂吸附性能研究[J]. 化工新型材料, 2019, 47(10): 163-166 DOI:

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