整体式含氮分级孔炭质CO2吸附剂的设计制备及变电吸附性能研究

项目名称： 整体式含氮分级孔炭质CO2吸附剂的设计制备及变电吸附性能研究

项目编号： No.21506061

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 有机化学

项目作者： 王际童

作者单位： 华东理工大学

项目金额： 21万元

中文摘要： 高效CO2吸附剂的制备及低能耗吸附过程是吸附法捕集CO2的关键。本项目提出结构设计及制备整体式含氮分级孔炭质CO2吸附剂，并建立与之相匹配的变电吸附过程的新思路。拟采用基于纤维增强的复合方法制备整体式含氮分级孔炭，定向控制材料的宏观形貌、孔隙结构和表面化学组成，通过对CO2吸附分离性能的深入研究，揭示吸附剂结构与CO2吸附性能的构-效关系，并建立与之相匹配的低能耗变电吸附过程，探索出最佳循环过程协同控制技术。本思路的核心在于：（i）串联分级孔结构的设计，中大孔有利于CO2的扩散传输，微孔有利于CO2的吸附存储；（ii）碱性含氮基团的引入能够增强吸附剂对CO2的吸附势；（iii）整体式炭具有各向同性的微结构和良好的导电导热性，可采用变电吸附实现快速升温脱附，降低再生能耗。本项目的实施对高效CO2吸附剂的理性设计及吸附法的工业应用具有重要的科学意义和指导价值。

中文关键词： 二氧化碳吸附；吸附剂；整体式含氮分级孔炭；变电吸附；构效关系

英文摘要： The development of highly efficient CO2 adsorbents and the adsorption separation process with low energy consumption are the key to the adsorption technology. This proposal provides a new concept of designed synthesis of nitrogen doped hierarchical porous carbon monoliths for CO2 capture and development of the electrical swing adsorption (ESA) process. The nitrogen doped hierarchical porous carbon monoliths will be prepared by a low-cost approach based on the fiber reinforced method. The pore structure, morphology and surface chemistry of the carbon monoliths will be carefully controlled to optimize the adsorbents. The CO2 adsorption capacity of the carbon monoliths will be investigated to understand how the structural feature and surface chemistry of the adsorbents influence the adsorption parameters. The feasibility and efficiency for CO2 capture on the carbon monoliths by electrical swing adsorption (ESA) process will be evaluated. The coordinated control technology of the best cycle will be explored from the cycle experiment. The key concepts in the project are including: (i) The macropores and mesopores could facilitate the CO2 diffusion, while the micropores could increase the CO2 adsorption capacity and sever as the storage for CO2. (ii) The nitrogen doping could improve the adsorption potential for CO2 adsorption. (iii) The carbon monoliths have good electrical conductivity and homogenized structure which could be used in the low-energy consumption electrical swing adsorption (ESA) process to desorb CO2 rapidly. The successfully implementation of this program will make great contribution to the design of high performance adsorbent and guide the further development of CO2 adsorption separation process for industrial application.

英文关键词： Carbon dioxide adsorption;adsorbent;Nitrogen Doped Hierarchical Porous Carbon Monolith;Electric Swing Adsorption ;Structure-activity relationship