化工进展 ›› 2019, Vol. 38 ›› Issue (9): 4197-4203.DOI: 10.16085/j.issn.1000-6613.2019-0022

• 材料科学与技术 • 上一篇    下一篇

等离子体辅助快速合成磁性Fe3O4/NaA复合材料及其CO2吸附性能

金晴1(),徐建2,杨自然3,王臣辉1,胡军1(),刘洪来1   

  1. 1. 华东理工大学化学与分子工程学院,上海 200237
    2. 上海市计量测试技术研究院,上海 200233
    3. 中国石化;上海石油化工股份有限公司,上海 200540
  • 收稿日期:2019-01-04 出版日期:2019-09-05 发布日期:2019-09-05
  • 通讯作者: 胡军
  • 作者简介:金晴(1994—),女,硕士研究生,研究方向为材料物理化学。E-mail:Y30160237@mail.ecust.edu.cn
  • 基金资助:
    国家重点基础研发计划(2015BAC04B01);国家自然科学基金(21676080)

Ultrafast synthesis of magnetic Fe3O4/NaA composites through plasma treatment for CO2 capture

Qing JIN1(),Jian XU2,Ziran YANG3,Chenhui WANG1,Jun HU1(),Honglai LIU1   

  1. 1. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
    2. Shanghai Institute of Metrology and Testing Technology, Shanghai 200233, China
    3. Sinopec Shanghai Petrochemical Company Limited, Shanghai 200540, China
  • Received:2019-01-04 Online:2019-09-05 Published:2019-09-05
  • Contact: Jun HU

摘要:

吸附法是捕集分离CO2等温室气体的重要方法,磁性复合材料能实现气固相快速分离而备受关注。本文利用介质阻挡放电等离子体处理方法,分别对磁性Fe3O4和分子筛前体进行处理,再通过水热法快速制备了Fe3O4/NaA复合材料。利用X射线衍射、红外光谱、扫描电镜和元素扫描等技术进行了表征,并考察了复合材料中Fe3O4/NaA含量比对CO2吸附性能和磁性能的影响。结果显示,当Fe3O4的质量分数为23.2%时,Fe3O4/NaA复合材料既具有优异CO2吸附能力(2.10mmol/g),又具有较好的磁性(25.92emu/g),同时CO2吸附-脱附循环稳定性高,是一种新型磁性CO2吸附剂。在采用流化床吸附捕集CO2技术中,有望实现气固高效磁分离。

关键词: CO2吸附捕集, 等离子体处理, 磁性材料, Fe3O4/NaA复合材料

Abstract:

Adsorption is an important method for CO2 capture and separation. Recently, magnetic composites have attracted much attention for their ability to achieve rapid gas-solid separation. Herein, Fe3O4/NaA composites were rapidly synthesized by the hydrothermal method using dielectric barrier discharge (DBD) treatments for magnetic Fe3O4 nanoparticles and NaA sieve precursors, respectively. By using characteristics of X-ray diffraction, FTIR, SEM and SEM-EDS, the structure properties of composites were demonstrated. Meanwhile, the effect of the molar ratio of Fe3O4/NaA in composites on their CO2 adsorption capacity and magnetic property were investigated. It was found that when the mass fraction of Fe3O4 was 23.2%, the Fe3O4/NaA composite showed both excellent CO2 adsorption capacity (2.10mmol/g) and magnetic properties (25.92emu/g). More importantly, with good cycle stability of CO2 adsorption, Fe3O4/NaA composite provided an excellent magnetic CO2 adsorbent for potential fast magnetic gas-solid separation in the fluidized bed for CO2 capture.

Key words: CO2 capture, plasma treatment, magnetic material, Fe3O4/NaA composites

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