Catalytic effect of cobalt ion on oxidative pyrolysis of cation exchange resin

SHEN Jianhua; SONG Qi; YAO Bing; HUANG Zhengliang; WANG Jingdai; YANG Yongrong

doi:10.11949/0438-1157.20190253

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Catalytic effect of cobalt ion on oxidative pyrolysis of cation exchange resin

Catalysis\, kinetics and reactors | 更新时间：2026-07-24

- Catalytic effect of cobalt ion on oxidative pyrolysis of cation exchange resin
- CIESC Journal Vol. 70, Issue 7, Pages: 2548-2555(2019)
- 作者机构：
  
  1.浙江省化工高效制造技术重点实验室，浙江杭州 310027
  2.浙江大学化学工程与生物工程学院，浙江杭州 310027
  3.深圳中广核工程设计有限公司，上海 200241
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190253
  CLC： TL 941⁺.39
- Received：18 March 2019，
  
  Revised：2019-04-23，
  
  Online First：24 July 2026，
  
  Published：05 July 2019
- 稿件说明：
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沈建华, 宋琦, 姚兵, 黄正梁, 王靖岱, 阳永荣. 钴离子对阳离子交换树脂氧化裂解反应的催化作用[J]. 化工学报, 2019, 70(7): 2548-2555

SHEN Jianhua, SONG Qi, YAO Bing, HUANG Zhengliang, WANG Jingdai, YANG Yongrong. Catalytic effect of cobalt ion on oxidative pyrolysis of cation exchange resin[J]. CIESC Journal, 2019, 70(7): 2548-2555
沈建华, 宋琦, 姚兵, 黄正梁, 王靖岱, 阳永荣. 钴离子对阳离子交换树脂氧化裂解反应的催化作用[J]. 化工学报, 2019, 70(7): 2548-2555 DOI： 10.11949/0438-1157.20190253.

SHEN Jianhua, SONG Qi, YAO Bing, HUANG Zhengliang, WANG Jingdai, YANG Yongrong. Catalytic effect of cobalt ion on oxidative pyrolysis of cation exchange resin[J]. CIESC Journal, 2019, 70(7): 2548-2555 DOI： 10.11949/0438-1157.20190253.

摘要

氧化裂解能有效增大放射性废阳离子交换树脂的减容比，但是较高的裂解温度易导致核素挥发。为了降低裂解温度，以硝酸钴和阳离子交换树脂为原料，制备了不同钴含量的含钴树脂，在热重分析仪上考察了钴含量对树脂裂解反应的影响。采用离子交换的方法掺入10~40 g/L的钴离子，可以使树脂共聚物基体裂解峰的峰值温度降低232~263℃，而对减容比的影响较小。通过对残渣的XRD、FT-IR、XPS及元素分析，发现由钴离子转化形成的氧化钴对共聚物基体的裂解具有催化作用，促进了硫键（—S—）的断裂，使裂解温度降低。

Abstract

Oxidative pyrolysis can effectively increase the volume re

duction ratio of radioactive waste cation exchange resin

but higher pyrolysis temperature is likely to cause nuclides to volatilize. However

the high pyrolysis temperature can easily lead to the volatilization of nuclide. To lower the pyrolysis temperature

a series of resins containing an increasing Co loading were prepared by ion exchange method

using Co(NO

)

·6H

O and cation exchange resin (Amberlite IRN-97H) as raw materials. The effect of Co with different contents on the pyrolysis of resin was investigated on a thermogravimetric analyzer. When the Co content was 10－40 g/L

the peak temperature of the mass loss peak of the copolymer matrix of resin was reduced by 232－263℃ compared to that of pure resin

while the volume reduction ratios were almost the same. The XRD

FT-IR

XPS and elemental analysis of the solid residue were performed. The results showed that the CoO formed by the conversion from Co

had a catalytic effect on the oxidative pyrolysis of the copolymer matrix

which promoted the breakdown of sulfurbridge (—S—).

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Keywords

references

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