一种多孔型NaF吸附剂的制备及其对MoF6吸附的初步研究

李杨娟; 程治强; 张焕琦; 张国欣; 李洒洒; 龙德武; 吴国忠; 李晴暖

doi:10.11889/j.0253-3219.2014.hjs.37.080601

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一种多孔型NaF吸附剂的制备及其对MoF6吸附的初步研究

核能科学与工程 | 更新时间：2021-03-03

- 一种多孔型NaF吸附剂的制备及其对MoF6吸附的初步研究
  封面论文
- A novel technique for preparation of the porous adsorbent NaF and a preliminary study on its adsorption capacity for MoF6
- 核技术 2014年37卷第8期文章编号：080601
- 作者机构：
  
  1. 中国科学院上海应用物理研究所嘉定园区,上海,201800
  2. 中国科学院核辐射与核能技术重点实验室,上海,201800
  3. 上海大学,上海,201800
- 作者简介：
  
  [ "通讯作者: 李杨娟 E-mail:liyangjuan@sinap.ac.cn" ]
- 基金信息：
  
  中国科学院战略性先导科技专项资助项目(No.XDA02030000)资助()
- DOI：10.11889/j.0253-3219.2014.hjs.37.080601
  中图分类号：
- 纸质出版日期：2014-07-22
- 稿件说明：
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李杨娟, 程治强, 张焕琦, 等. 一种多孔型NaF吸附剂的制备及其对MoF6吸附的初步研究[J]. 核技术, 2014,37(8):080601

LI Yangjuan, CHENG Zhiqiang, ZHANG Huanqi, et al. A novel technique for preparation of the porous adsorbent NaF and a preliminary study on its adsorption capacity for MoF6[J]. Nuclear techniques, 2014, 37(8): 080601
李杨娟, 程治强, 张焕琦, 等. 一种多孔型NaF吸附剂的制备及其对MoF6吸附的初步研究[J]. 核技术, 2014,37(8):080601 DOI： 10.11889/j.0253-3219.2014.hjs.37.080601.

LI Yangjuan, CHENG Zhiqiang, ZHANG Huanqi, et al. A novel technique for preparation of the porous adsorbent NaF and a preliminary study on its adsorption capacity for MoF6[J]. Nuclear techniques, 2014, 37(8): 080601 DOI： 10.11889/j.0253-3219.2014.hjs.37.080601.

摘要

发展了一种以高分子羧甲基纤维素钠(Carboxymethyl cellulose

CMC)、NaF和H2O为原料，通过成形和烧结等程序制取多孔型NaF吸附剂颗粒的新方法。分析和表征结果指出，吸附剂比表面积为0.3–0.4m2?g?1，孔隙率为40%–45%，颗粒强度为60–80N。室温下，吸附剂对MoF6的平衡吸附量约37.8 mg MoF6/1g NaF。能谱(Energy Dispersive Spectrometry

EDS)分析指出，MoF6能够通过NaF颗粒的孔隙扩散到吸附剂的内部。预计该吸附剂可以用于氟化挥发中UF6的进一步纯化研究。

Abstract

Background: As a pyroprocess

the fluoride volatility process is developed to recover uranium from spent nuclear fuel. And the fluoride adsorption technology is usually applied as a mean for the purification and collection of UF6 in the fluoride volatility process. Purpose: A novel technique for preparation of the adsorbent NaF used for the purification of uranium in the fluoride volatile process has been developed. Methods: In this work

the polymer sodium carboxymethyl cellulose (CMC)

NaF and water were used as raw materials

and porous NaF adsorbent particles were made by molding and sintering process. The characteristics of the adsorbent particles were analyzed and characterized. Results: Specific surface area of the adsorbent was 0.3–0.4m2?g?1

porosity was 40%–45% and particle strength was 60–80N. At room temperature

the equilibrium adsorption capacity of MoF6 was about 37.8 mg MoF6/1g NaF. The energy dispersive spectrometry (EDS) analytical result indicated that the MoF6 was able to diffuse into the interior of the adsorbent particles through their pores. Conclusion: The NaF adsorbent developed in this study is expected to be used for further purification of uranium in fluoride volatile process. Abstract

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