Department of Chemical Engineering, BITS Pilani Hyderabad Campus , Hyderabad, India.
Granules India Ltd, Gagillapur, Hyderabad, India.
Environ Sci Technol. 2015 Nov 3;49(21):12641-61. doi: 10.1021/acs.est.5b03149. Epub 2015 Oct 14.
Accumulation of greenhouse gases especially CO2 in the atmosphere leading to global warming with undesirable climate changes has been a serious global concern. Major power generation in the world is from coal based power plants. Carbon capture through pre- and post- combustion technologies with various technical options like adsorption, absorption, membrane separations, and chemical looping combustion with and without oxygen uncoupling have received considerable attention of researchers, environmentalists and the stake holders. Carbon capture from flue gases can be achieved with micro and meso porous adsorbents. This review covers carbonaceous (organic and metal organic frameworks) and noncarbonaceous (inorganic) porous adsorbents for CO2 adsorption at different process conditions and pore sizes. Focus is also given to noncarbonaceous micro and meso porous adsorbents in chemical looping combustion involving insitu CO2 capture at high temperature (>400 °C). Adsorption mechanisms, material characteristics, and synthesis methods are discussed. Attention is given to isosteric heats and characterization techniques. The options to enhance the techno-economic viability of carbon capture techniques by integrating with CO2 utilization to produce industrially important chemicals like ammonia and urea are analyzed. From the reader's perspective, for different classes of materials, each section has been summarized in the form of tables or figures to get a quick glance of the developments.
温室气体（尤其是二氧化碳）在大气中的积累导致全球变暖以及不良的气候变化，这已成为一个严重的全球性问题。世界上主要的发电来自燃煤电厂。通过预燃烧和后燃烧技术，结合各种技术选择，如吸附、吸收、膜分离和化学循环燃烧（有和没有氧解耦），已经引起了研究人员、环保主义者和利益相关者的相当关注。可以使用微孔和介孔吸附剂从烟道气中捕获二氧化碳。本综述涵盖了用于在不同工艺条件和孔径下吸附 CO2 的碳质（有机和金属有机骨架）和非碳质（无机）多孔吸附剂。还重点介绍了涉及在高温（>400°C）下原位 CO2 捕获的化学循环燃烧中的非碳质微孔和介孔吸附剂。讨论了吸附机制、材料特性和合成方法。关注了等离热和表征技术。通过与 CO2 利用相结合，分析了提高碳捕获技术的技术经济可行性的选择，以生产工业上重要的化学品，如氨和尿素。从读者的角度来看，对于不同类别的材料，每个部分都以表格或图形的形式进行了总结，以便快速了解发展情况。
