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首页> 外文期刊>RSC Advances >A novel study on preparation of H2TiO3-lithium adsorbent with titanyl sulfate as titanium source by inorganic precipitation-peptization method
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A novel study on preparation of H2TiO3-lithium adsorbent with titanyl sulfate as titanium source by inorganic precipitation-peptization method

机译：用无机沉淀染色法作为钛源作为钛源的H2TiO3-锂吸附剂的制备研究

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摘要

A peroxy lithium titanate sol was prepared with low-cost and easily available titanyl sulfate as the titanium source, lithium acetate as the lithium source, and aquae hydrogenii dioxidi as the complexing agent using an inorganic precipitation-peptization method. The sol system was aged, centrifugal-washed, dried and calcined to obtain a pure precursor, Li2TiO3, followed by pickling with hydrochloric acid to obtain the H2TiO3-lithium adsorbent. The effects of aging time and calcination temperature on the target product were investigated. The results indicate that the sol-system is stable, which is beneficial for loading on a suitable carrier, such as ceramic foams. Centrifugal-washing, instead of vacuum filtration-washing, is conducive to product formation. The most suitable aging time of precursor sol is 24 h and the appropriate calcination temperature is 750 degrees C. The lithium drawn-out ratio of samples synthesized in this condition reaches 89.50% after pickling with 0.2 M hydrochloric acid for 8 h at 70 degrees C. Moreover, the Li+ uptake of the adsorbent (adsorption capacity) reaches 29.96 mg g(-1) and 33.35 mg g(-1) when the adsorption time is 1 h and 8 h, respectively.
机译：用低成本且易于使用的硫酸钛作为钛源，锂作为锂源的锂源，用无机沉淀染色法作为络合剂的Aquae Hydolii Dioxidi制备过氧锂钛酸锂溶胶。将溶胶系统变老，离心洗涤，干燥并煅烧，得到纯前体Li2TiO3，然后用盐酸酸洗，得到H2TiO3-锂吸附剂。研究了老化时间和煅烧温度对靶产物的影响。结果表明，溶胶系统是稳定的，这对于加载合适的载体（例如陶瓷泡沫）是有益的。离心式洗涤，代替真空过滤洗涤，有利于产物形成。前体溶胶的最合适的老化时间是24小时，合适的煅烧温度为750℃。在该条件下合成的样品的样品的锂拉出比率在70摄氏度下腌制0.2M盐酸8小时后达到89.50％89.50％ 。此外，当吸附时间分别为1小时和8小时，Li +吸附剂（吸附能力）的摄取达到29.96mg（-1）和33.35mg g（-1）。

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  • 来源
    《RSC Advances》 |2018年第3期|共7页
  • 作者

    Zhang Li-Yuan; Liu Yi-Wu; Huang Lan; Li Ning;

  • 作者单位

    Neijiang Normal Univ Coll Chem &

    Chem Engn Neijiang 641112 Peoples R China;

    Neijiang Normal Univ Coll Chem &

    Chem Engn Neijiang 641112 Peoples R China;

    Neijiang Normal Univ Coll Chem &

    Chem Engn Neijiang 641112 Peoples R China;

    Neijiang Normal Univ Coll Chem &

    Chem Engn Neijiang 641112 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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