能源化学(英文) ›› 2017, Vol. 26 ›› Issue (5): 830-838.DOI: 10.1016/j.jechem.2017.06.005

• REVIEW • 上一篇    下一篇

Molten salts-modified MgO-based adsorbents for intermediate-temperature CO2 capture:A review

Wanlin Gaoa, Tuantuan Zhoua, Yanshan Gaoa, Benoît Louisb, Dermot O'Harec, Qiang Wanga   

  1. a College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;
    b Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177, Université de Strasbourg, 1 rue Blaise Pascal, 67000 Strasbourg, France;
    c Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
  • 收稿日期:2017-05-20 修回日期:2017-06-15 出版日期:2017-09-15 发布日期:2017-11-10
  • 通讯作者: Qiang Wang,E-mail addresses:qiang.wang.ox@gmail.com,qiangwang@bjfu.edu.cn
  • 作者简介:Wanlin Gao is currently a Master candidate in the College of Environmental Science and Engineering, Beijing Forestry University in China. She received her bachelor's degree from Beijing Forestry University as well. She is currently working on the magnesium oxide-based adsorbents for CO2 capture at intermediate temperatures;Tuantuan Zhou is currently a Master candidate in the College of Environmental Science and Engineering, Beijing Forestry University in China. He received his bachelor's degree from Beijing Forestry University as well. He is currently working on the hydrothermal synthesis of nanostructured metal oxides for environmental applications.
  • 基金资助:

    This work was supported by the Fundamental Research Funds for the Central Universities (2016ZCQ03), Beijing Excellent Young Scholar (2015000026833ZK11), the National Natural Science Foundation of China (51622801, 51572029, and 51308045), and the Xu Guangqi grant.

Molten salts-modified MgO-based adsorbents for intermediate-temperature CO2 capture:A review

Wanlin Gaoa, Tuantuan Zhoua, Yanshan Gaoa, Benoît Louisb, Dermot O'Harec, Qiang Wanga   

  1. a College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;
    b Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177, Université de Strasbourg, 1 rue Blaise Pascal, 67000 Strasbourg, France;
    c Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
  • Received:2017-05-20 Revised:2017-06-15 Online:2017-09-15 Published:2017-11-10
  • Contact: Qiang Wang,E-mail addresses:qiang.wang.ox@gmail.com,qiangwang@bjfu.edu.cn
  • Supported by:

    This work was supported by the Fundamental Research Funds for the Central Universities (2016ZCQ03), Beijing Excellent Young Scholar (2015000026833ZK11), the National Natural Science Foundation of China (51622801, 51572029, and 51308045), and the Xu Guangqi grant.

摘要: Carbon dioxide (CO2) capture using magnesium oxide (MgO)-based adsorbents at intermediate temperatures has been regarded as a very prospective technology for their relatively high adsorption capacity, low cost, and wide availability. During the past few years, great effort has been devoted to the fabrication of molten salts-modified MgO-based adsorbents. The extraordinary progress achieved by coating with molten salts greatly promotes the CO2 capture capacity of MgO-based adsorbents. Therefore, we feel it necessary to deliver a timely review on this type of CO2 capturing materials, which will benefit the researchers working in both academic and industrial areas. In this work, we classified the molten saltsmodified MgO adsorbents into four categories:(1) homogenous molten salt-modified MgO adsorbents, (2) molten salt-modified double salts-based MgO adsorbents, (3) mixed molten salts-modified MgO adsorbents, and (4) molten salts-modified MgO-based mixed oxides adsorbents. This contribution critically reviews the recent developments in the synthetic method, adsorption capacity, reaction kinetics, promotion mechanism, operational conditions and regenerability of the molten salts-modified MgO CO2 adsorbents. The challenges and prospects in this promising field of molten salts-modified MgO CO2 adsorbents in real applications are also briefly mentioned.

关键词: Global warming, Magnesium oxide, CO2 adsorption, Molten salts, Intermediate temperatures

Abstract: Carbon dioxide (CO2) capture using magnesium oxide (MgO)-based adsorbents at intermediate temperatures has been regarded as a very prospective technology for their relatively high adsorption capacity, low cost, and wide availability. During the past few years, great effort has been devoted to the fabrication of molten salts-modified MgO-based adsorbents. The extraordinary progress achieved by coating with molten salts greatly promotes the CO2 capture capacity of MgO-based adsorbents. Therefore, we feel it necessary to deliver a timely review on this type of CO2 capturing materials, which will benefit the researchers working in both academic and industrial areas. In this work, we classified the molten saltsmodified MgO adsorbents into four categories:(1) homogenous molten salt-modified MgO adsorbents, (2) molten salt-modified double salts-based MgO adsorbents, (3) mixed molten salts-modified MgO adsorbents, and (4) molten salts-modified MgO-based mixed oxides adsorbents. This contribution critically reviews the recent developments in the synthetic method, adsorption capacity, reaction kinetics, promotion mechanism, operational conditions and regenerability of the molten salts-modified MgO CO2 adsorbents. The challenges and prospects in this promising field of molten salts-modified MgO CO2 adsorbents in real applications are also briefly mentioned.

Key words: Global warming, Magnesium oxide, CO2 adsorption, Molten salts, Intermediate temperatures