硅胶负载焦磷钼酸锆吸附剂的制备及对铯的吸附

采用两步法合成硅胶负载焦磷钼酸锆吸附剂( ZrMoPP-SiCU,通 过 XRF、 SEM、 T EM、 XRD、 BET、 XPS 等方法对吸附剂进行了表征.同时,考察了竞争性离子的存在、酸度的变化对ZrMoP P-Si02 吸附铯的影响. 结果表明:冗+ 、% + 、 -+ 、 63+、 0 2+五种竞争性离子的存在以及溶液酸度的变化基本不影响吸附剂的吸附 性能,并且 ZrMoP P -S i0 2对铯的吸附等温线符合Langmuir模型以及吸附动力学符合假二阶动力学方程.吸 附铯后,材料 Z: rMoP P-Si02 的 X P S也显示有铯的存在,表明材料对铯有吸附作用.结果表明, Z...

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Bibliographic Details
Published in核化学与放射化学 Vol. 39; no. 4; pp. 290 - 297
Main Author 郭梦 余振华 那平
Format Journal Article
LanguageChinese
Published 天津大学化工学院,天津,300350%中国原子能科学研究院放射化学研究所,北京,102413 2017
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ISSN0253-9950
DOI10.7538/hhx.2017.39.04.0290

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Summary:采用两步法合成硅胶负载焦磷钼酸锆吸附剂( ZrMoPP-SiCU,通 过 XRF、 SEM、 T EM、 XRD、 BET、 XPS 等方法对吸附剂进行了表征.同时,考察了竞争性离子的存在、酸度的变化对ZrMoP P-Si02 吸附铯的影响. 结果表明:冗+ 、% + 、 -+ 、 63+、 0 2+五种竞争性离子的存在以及溶液酸度的变化基本不影响吸附剂的吸附 性能,并且 ZrMoP P -S i0 2对铯的吸附等温线符合Langmuir模型以及吸附动力学符合假二阶动力学方程.吸 附铯后,材料 Z: rMoP P-Si02 的 X P S也显示有铯的存在,表明材料对铯有吸附作用.结果表明, Z: rMoP P -S 0 2 具有一定的工业应用前景.
Bibliography:11-2045/TL
p h osp h omo ly bd ic acid z i rc onium; s i l ic o n e; c e s ium ; ad so rp t io n
Phosphomolybdic acid zirconium loaded on silocone (ZrMoPP-Si02) adsorbent was synthesized by two-step method. The characterizations of the adsorbents were investigated by XRF, SEM, TEM, XRD, BET and XPS methods. The effects of both competitive ions and acidity on cesium adsorption of ZrMoPP-Si02 were also studied. The adsorption follows a typical Langmuir model and a pseudo second-order kinetic model. After adsorption of cesi-um, there is cesium peak on XPS of ZrMoPP-Si02 , which means ZrMoPP_Si02 has great adsorption of cesium. Five co-existing cations and the change of acidity don?t affect adsorp-tion ability of ZrMoPP-Si02. Results show that ZrMoPP-Si02 has certain industrial applica-tion prospect.
G U O Men g 1 ,Y U Z h en -h u a2 ,N A P in g 1,(1. Department of Chemical Engineering, Tianjin University, Tianjin 300350, China; 2. China Institute of Atomic Energy, P. O. Box 275 (1 26) , Beijing 102413 , China)
ISSN:0253-9950
DOI:10.7538/hhx.2017.39.04.0290