...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymer Composites >Polymeric ionic liquid modified silica for CO2 adsorption and diffusivity
【24h】

Polymeric ionic liquid modified silica for CO2 adsorption and diffusivity

机译：用于CO 2吸附和扩散率的聚合物离子液体改性二氧化硅

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two types of polymeric ionic liquids (PILs) modified porous silica for CO2 sorption were synthesized by the polymerization of dialkylphosphate di-butyl phosphate [VYIM][Bu2PO4] and 1-allyl-3-methylimidazolium tetrafluoroborate [AMIM][BF4] with alkoxyl-modified silica. The PILs-modified silica (SiO2-P[VYIM][Bu2PO4] and SiO2-P[AMIM][BF4]) were evaluated by CO2 adsorption isotherms at 273 K for investigating the porous structures. The adsorption and desorption behaviors of CO2 (at 298, 313, and 333 K) and N-2 (at 313 K) up to 0.2 MPa were also investigated using a gravimetric method. In comparison with bare silica, the grafting of PILs on the support surface leads to a loss of microporosity, resulting in a slight decrease in CO2 sorption capacity. The difference of CO2 sorption capacity between SiO2-P[VYIM][Bu2PO4] and SiO2-P[AMIM][BF4] is little, especially under 0.1 MPa. CO2/N-2 selectivity is however notably improved, and especially [AMIM][BF4] modified silica shows the best performance. The homogeneous surface diffusion model (HSDM) was used to estimate the diffusivities and good agreement between experimental values and fitting curves was obtained. The diffusion coefficients of CO2 in the PILs-modified silica are level with that of bare silica at level of 10(-7)-10(-8) m(2)/s, about two to three orders of magnitude faster than that of reported [BMIM][BF4]. POLYM. COMPOS., 38:759-766, 2017. (c) 2015 Society of Plastics Engineers
机译：以二烷基磷酸酯-磷酸二丁酯[VYIM][Bu2PO4]和1-烯丙基-3-甲基咪唑四氟硼酸盐[AMIM][BF4]与烷氧基改性二氧化硅聚合，合成了两种用于CO2吸附的聚合物离子液体（PIL）改性多孔二氧化硅。在273K下，通过CO2吸附等温线对PILs改性二氧化硅（SiO2-P[VYIM][Bu2PO4]和SiO2-P[AMIM][BF4]）进行了评估，以研究其多孔结构。用重量法研究了0.2mpa以下CO2（298、313和333k）和N-2（313k）的吸附和解吸行为。与裸二氧化硅相比，在载体表面接枝PIL会导致微孔损失，从而导致CO2吸附能力略有下降。SiO2-P[VYIM][Bu2PO4]和SiO2-P[AMIM][BF4]对CO2的吸附能力差异不大，尤其是在0.1mpa下。然而，CO2/N-2选择性显著提高，尤其是[AMIM][BF4]改性二氧化硅表现出最好的性能。采用均匀表面扩散模型（HSDM）估算扩散系数，实验值与拟合曲线吻合良好。在10（-7）-10（-8）m（2）/s水平下，PILs改性二氧化硅中CO2的扩散系数与裸二氧化硅的扩散系数相同，比报道的[BMIM][BF4]快约两到三个数量级。博莱姆。COMPOS。，38:759-766, 2017. （c） 2015年塑料工程师学会

著录项

  • 来源
    《Polymer Composites》 |2017年第4期|共8页
  • 作者

    Sun Yachai; Zhu Jiamei; Huang Junhua; Xin Feng; Liu Jingxia;

  • 作者单位

    China Univ Min &

    Technol Sch Chem Engn &

    Technol Xuzhou 221116 Jiangsu Peoples R China;

    China Univ Min &

    Technol Sch Chem Engn &

    Technol Xuzhou 221116 Jiangsu Peoples R China;

    CSIRO Energy Technol Box 312 Clayton Vic 3169 Australia;

    China Univ Min &

    Technol Sch Chem Engn &

    Technol Xuzhou 221116 Jiangsu Peoples R China;

    China Univ Min &

    Technol Sch Chem Engn &

    Technol Xuzhou 221116 Jiangsu Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 增强塑料、填充塑料;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号