室温下碳减排多孔金属有机框架材料的评估、筛选与反馈性设计合成

项目名称： 室温下碳减排多孔金属有机框架材料的评估、筛选与反馈性设计合成

项目编号： No.21273033

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 项生昌

作者单位： 福建师范大学

项目金额： 75万元

中文摘要： 温室效应带来全球变暖是人类史上最为严峻的环境问题之一，研发新的CO2捕集CCS技术，降低大气中和工业排放的CO2已成为能源环境领域的研究热点。多孔金属有机框架(MOFs)的变压吸附法进行CCS是有潜力且极具挑战的工作，目前主要存在两点不足：单纯地以吸附选择性为标准无法真实衡量材料的CO2分离性能；现有吸附剂无法同时实现高分离能力和低再生能耗。我们的前期研究表明无维穿透时间可作为比吸附选择性更可靠的标准，但不够直观简便。本课题拟1)分析无维穿透时间与纯组分气体吸附数据的关系，凝练出可靠简便的评估标准；2) 以多酸及其有机多金属簇类似物，金属硅倍半氧烷框架等为研究体系，首创提出调节孔壁功能位点的位置分布,优化孔道结构，利用功能位点的导向作用，增大CO2-CO2吸附质间相互作用，提高CO2堆积密度，实现高稳定、高分离、低再生能的CO2捕集分离材料。预期申请专利2-3项，发表SCI论文8-10。

中文关键词： 碳减排；金属有机框架；变压吸附；穿透实验；选择性

英文摘要： Global warming caused by greenhouse gases poses one of the most serious threats to the global environment ever faced in human history. The development of new capture technology to remove CO2 from atmosphere and industry emissions becomes a research hotspot in the field of energy & environment. Pressure Swing Adsorption on metal-organic frameworks (MOFs) for CO2 Capture and Sequestration (CCS) is a promising but challenging task. However, there are two crucial points need to be resolved. One is to set up new reliable evaluting criteria in screening adsorbents, instead of adsorption selectvity (S), the most common method but with the fallacy often occurred. Another is difficult to prepare the MOFs for CCS with high separation capacity and low regenerating energy. Our previous work showed dimensional breakthrough time is more reliable than the adsorption selectvity, but it is not straight because it needs the complicated calculation. This proposal will perform the analysis of the relationship between the breakthrough time and the adsorption data of pure composite gases for the large amount of MOFs reported for the CCS by statistical software SPSS, and then to give new straight, convenient and reliable criteria for the screening. Meanwhile, the project will conduct the synthsis of new MOFs based on the structural in

英文关键词： CO2 capture and separation；metal-organic frameworks(MOFs)；Pressure Swing Adsorption；Breakthrough Analysis；Adsorption Selectivity