Effect of Aluminum Source on Adsorption Performance of Lithium Orthosilicate Based Adsorbents from Kaolin Clay

XIE Hongyan; DING Tong; LI Yulong; MA Zhi; CHEN Weiqiang

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Effect of Aluminum Source on Adsorption Performance of Lithium Orthosilicate Based Adsorbents from Kaolin Clay

机译：铝源对高岭土中原硅酸锂基吸附剂吸附性能的影响

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A novel lithium orthosilicate based adsorbent doping with halloysite nanotubes (HNTs) was synthesized with Kaolin clay and SiO2 by an impregnation-precipitation method. The samples were characterized by X-ray diffraction and scanning electron microscopy, nitrogen adsorption-desorption isotherm analysis and thermo-gravimetry, respectively. The results indicate that the reactivity of Li4SiO4 for CO2 absorption can be enhanced by doping alumina. Different alu-minum sources result in different degrees of the CO2 adsorption performance. It is also found that the CO2 capture amount of the adsorbent doping with Halloysite nanotubes is 15.25wt.% at 560℃, which is better than that of the ad-sorbent doping withγ-Al2O3(i.e., 10.88wt.%).

机译：通过浸渍-沉淀法，用高岭土和SiO2合成了一种新型的正硅酸锂基吸附剂，其掺杂有埃洛石纳米管（HNTs）。通过X射线衍射和扫描电子显微镜，氮吸附-解吸等温线分析和热重分析分别对样品进行表征。结果表明，掺杂氧化铝可以提高Li4SiO4对CO2吸收的反应性。不同的铝最少源会导致不同程度的CO2吸附性能。还发现，在560℃下，掺有埃洛石纳米管的吸附剂的CO 2捕获量为15.25wt。％，比掺有γ-Al2O3的吸附剂的CO 2捕获量（即10.88wt。％）要好。

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来源
《硅酸盐学报（英文版）》 |2015年第3期|124-129|共6页
作者
XIE Hongyan; DING Tong; LI Yulong; MA Zhi; CHEN Weiqiang;
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School of Chemical Engineering and Technology, Tianjin University,Tianjin300072, China;

School of Chemical Engineering and Technology, Tianjin University,Tianjin300072, China;

School of Chemical Engineering and Technology, Tianjin University,Tianjin300072, China;

School of Chemical Engineering and Technology, Tianjin University,Tianjin300072, China;

School of Chemical Engineering and Technology, Tianjin University,Tianjin300072, China;

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Effect of Aluminum Source on Adsorption Performance of Lithium Orthosilicate Based Adsorbents from Kaolin Clay

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