无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2024, Vol. 56 ›› Issue (2): 38-43.doi: 10.19964/j.issn.1006-4990.2023-0214

• 研究与开发 • 上一篇    下一篇

氨基功能化气相二氧化硅材料的制备及其吸附二氧化碳性能研究

李阳1(), 娄飞健2, 隋鑫3, 李克艳1(), 刘飞3(), 郭新闻1()   

  1. 1.大连理工大学化工学院精细化工国家重点实验室智能材料化工前沿科学中心, 辽宁 大连 116024
    2.河南师范大学化学化工学院, 河南 新乡 453000
    3.武汉船用电力推进装置研究所, 湖北 武汉 430064
  • 收稿日期:2023-04-14 出版日期:2024-02-10 发布日期:2024-02-06
  • 通讯作者: 李克艳(1979— ),女,博士,副教授,研究方向为光催化、高级氧化技术;E-mail:keyanli@dlut.edu.cn
    刘飞(1984— ),男,博士,高级工程师,研究方向为动力电池;E-mail:liuf_712@126.com
    郭新闻(1967— ),男,博士,教授,研究方向为分子筛催化、二氧化碳催化转化;E-mail:guoxw@dlut.edu.cn
  • 作者简介:李阳(1997— ),男,硕士研究生,研究方向为氨基功能化固体吸附材料;E-mail:775128132@qq.com
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(DUT22LAB602)

Preparation of amine-functionalized fumed SiO2 materials and their performance for CO2 adsorption

LI Yang1(), LOU Feijian2, SUI Xin3, LI Keyan1(), LIU Fei3(), GUO Xinwen1()   

  1. 1.State Key Laboratory of Fine Chemicals,Frontier Science Center for Smart Materials,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China
    2.School of Chemistry and Chemical Engineering,Henan;Normal University,Xinxiang 453000,China
    3.Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China
  • Received:2023-04-14 Published:2024-02-10 Online:2024-02-06

摘要:

采用等体积浸渍法制备了一系列不同聚乙烯亚胺(PEI)负载量的气相SiO2作为CO2吸附剂。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、热重分析仪(TGA)、红外光谱仪(FT-IR)和氮气物理吸附仪对吸附剂的组成结构、PEI实际负载量及热稳定性进行了表征。研究了PEI相对分子质量及负载量、环境温度对吸附剂吸附CO2性能的影响,发现当PEI的相对分子质量为600、负载量为50%(质量分数)、温度为100 ℃时,50%-PEI(600)-SiO2吸附剂对CO2的吸附性能最优,吸附量可以达到130.6 mg/g,且在5次循环后性能损失仅为4.8%,表现出了优异的循环性能。同时,该吸附剂成本低廉,在锂电池热失控烟气中CO2吸附方面具有较好的应用前景。

关键词: 氨基功能化材料, 二氧化硅材料, 固体吸附剂, 二氧化碳吸附

Abstract:

A series of fumed silica materials with different polyethyleneimine(PEI) loadings as CO2 adsorbents were prepared by using the equal-volume impregnation method.The composition,structure,actual loading amount of PEI,and thermal stability of the adsorbents were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),thermogravimetric analysis(TGA),Fourier-transform infrared spectroscopy(FT-IR),and nitrogen physical adsorption measurements.The effects of PEI relative molecular weight,loading amount,and environmental temperature on the CO2 adsorption performance of the adsorbents were investigated.It was found that the 50%-PEI(600)-SiO2 adsorbent exhibited the best CO2 adsorption performance at 100 ℃,with a maximum adsorption capacity of 130.6 mg/g when the relative molecular weight of PEI was 600 and the loading amount was 50%(mass fraction).Furthermore,the adsorbent showed excellent cyclic performance,with only 4.8% performance loss after 5 cycles.The adsorbent was cost-effective and held great potential for application in CO2 capture from thermal runaway flue gases of lithium-ion batteries.

Key words: amine-functionalized material, silica material, solid adsorbent, CO2 adsorption

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