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首页> 外文期刊>Journal of Hazardous Materials >Synthesis of CuCl/Boehmite adsorbents that exhibit high CO selectivity in CO/CO_2 separation
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Synthesis of CuCl/Boehmite adsorbents that exhibit high CO selectivity in CO/CO_2 separation

机译：合成在CO / CO_2分离中具有高CO选择性的CuCl /勃姆石吸附剂的合成

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摘要

Highlights•A highly selective CO adsorbent based on a CuCl/boehmite composite was synthesized.•The adsorbent exhibited a very high CO/CO2separation factor.•High separation ability is attributed to the natural properties of the boehmite.•The thermal treatment temperature was optimized for CuCl dispersion onto boehmite.AbstractWe developed nanoporous adsorbent exhibiting unprecedented performance in separation of toxic carbon monoxide (CO). The adsorbent was prepared by dispersing CuCl on mesoporous boehmite via thermal monolayer dispersion route. A key point of the present synthesis is dispersing optimized amount of CuCl on the boehmite at a moderate temperature to maintain the characteristics of the boehmite. We performed a systematic study to reveal that a CuCl/boehmite composite (30wt% CuCl in total) thermally treated at 573K was the best optimized sample for CO separation. The CuCl/boehmite had a high capacity of CO adsorption (1.56mmolg−1) and an exceedingly low capacity of CO2adsorption (0.13mmolg−1) under 100kPa of each gas at 293K. The CO/CO2separation factor was 12.4. To the best of our knowledge, this value is the best on record. The achievement of this work is attributed to finding a new type of suitable supporting material: boehmite. The boehmite has a high affinity to CuCl, exhibits excellent dispersion of the CuCl, and achieves a superior CO adsorption capacity. However, it has a weak interaction with CO2. The CuCl/boehmite composite is a promising adsorbent for selective separation of CO from combustion exhaust and industrial off-gas streams.
机译： 突出显示 • 合成了一种基于CuCl /勃姆石复合材料的高选择性CO吸附剂。 • 吸附剂显示出很高的CO / CO 2 分离因子。 • 高分离能力归因于勃姆石的自然特性。 • 热处理优化温度以使CuCl分散在勃姆石上。 摘要 我们开发了纳米孔吸附剂，在分离有毒一氧化碳（CO）方面表现出空前的性能。通过将CuCl通过热单层分散途径分散在介孔勃姆石上来制备吸附剂。本合成的关键是在适度的温度下将优化量的CuCl分散在勃姆石上以保持勃姆石的特性。我们进行了系统的研究，发现在573K热处理的CuCl /勃姆石复合材料（总计30wt％CuCl）是用于CO分离的最佳优化样品。 CuCl /勃姆石具有很高的CO吸附能力（1.56mmolg -1 ），而CO 2 在293K下每种气体在100kPa下的吸附（0.13mmolg -1 ）。 CO / CO 2 分离系数为12.4。就我们所知，此值是有记录以来最好的。这项工作的成功归功于发现了一种新型的合适支撑材料：勃姆石。勃姆石对CuCl具有高亲和力，表现出优异的CuCl分散性，并具有优异的CO吸附能力。但是，它与CO 2 的相互作用较弱。 CuCl /勃姆石复合材料是一种用于从燃烧废气和工业废气中选择性分离CO的有前途的吸附剂。

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  • 来源
    《Journal of Hazardous Materials》 |2018年第15期|857-864|共8页
  • 作者

    Kanghee Cho; Jungsu Kim; Hee Tae Beum; Taesung Jung; Sang Sup Han;

  • 作者单位

    Climate Change Research Division, Korea Institute of Energy Research;

    Climate Change Research Division, Korea Institute of Energy Research,Graduate School of Energy Science and Technology, Chungnam National University;

    Climate Change Research Division, Korea Institute of Energy Research;

    Climate Change Research Division, Korea Institute of Energy Research;

    Climate Change Research Division, Korea Institute of Energy Research;

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

    Adsorption; Carbon monoxide; Carbon dioxide; Adsorbent; CuCl/boehmite;

    机译：吸附;一氧化碳;二氧化碳;吸附剂;CuCl /勃姆石;

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