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Regeneration dynamics of potassium-based sediment sorbents for CO2 capture

机译:用于捕集二氧化碳的钾基沉积物吸附剂的再生动力学

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摘要

Simulating regeneration tests of Potassium-Based sorbents that supported by Suzhou River Channel Sediment were carried out in order to obtain parameters of regeneration reaction. Potassium-based sediment sorbents have a better morphology with the surface area of 156.73 m2·g−1, the pore volume of 357.5×10−3 cm3·g−1 and the distribution of pore diameters about 2–20 nm. As a comparison, those of hexagonal potassium-based sorbents are only 2.83 m2g−1, 7.45×10−3 cm3g−1 and 1.72–5.4 nm, respectively. TGA analysis shows that the optimum final temperature of regeneration is 200 and the optimum loading is about 40%, with the best heating rate of 10 °C·min−1. By the modified Coats-Redfern integral method, the activation energy of 40% KHCO3 sorbents is 102.43 kJ·mol−1. The results obtained can be used as basic data for designing and operating CO2 capture process.
机译:为了获得再生反应的参数,对苏州河水道沉积物对钾基吸附剂进行了再生模拟实验。钾基沉积物吸附剂的形态较好,表面积为156.73 m2·g-1,孔体积为357.5×10-3 cm3·g-1,孔径分布为2-20 nm。相比之下,六角形钾基吸附剂的吸附量分别仅为2.83 m2g-1、7.45×10-3 cm3g-1和1.72-5.4 nm。 TGA分析表明,再生的最佳最终温度为200,最佳负载量约为40%,最佳加热速率为10°C·min-1。通过改进的Coats-Redfern积分法,40%KHCO3吸附剂的活化能为102.43 kJ·mol-1。获得的结果可用作设计和运行CO2捕集过程的基本数据。

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  • 来源
    《Korean Journal of Chemical Engineering》 |2013年第8期|1631-1635|共5页
  • 作者单位

    School of Environment Science and Engineering Donghua University">(190);

    School of Environment Science and Engineering Donghua University">(190);

    School of Environment Science and Engineering Donghua University">(190);

    School of Environment Science and Engineering Donghua University">(190);

    School of Environment Science and Engineering Donghua University">(190);

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 00:01:28

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