Mg-MOF-74材料的制备与CO2吸附分离性能研究数据集

针对课题任务书中基于双溶剂法、纳米限域禁锢法、电沉积法等合成方法，结合分子修饰与结构调控剪裁技术，实现高吸附容量、高稳定性的分级孔吸附材料的可控制备；并对已合成的分级孔吸附材料进行路易斯酸性、路易斯碱性位点改性设计和优化研究，提高对CO2、H2S等气体的吸附选择性。在课题中期时，利用合成前修饰法在保持MIP-207原骨架结构的基础上，通过在原配体均苯三甲酸中掺杂不同比例的5-氨基间苯二甲酸配体，合成了骨架中带有氨基和羧基的MIP-207-NH2和MIP-207-COOH材料，对CO2吸附进行测试，在25℃、0.1MPa条件下，吸附量为4.59 mmol/g和5.03 mmol/g，达到中期任务目标（5 mmol/g），未达到结题任务目标（7 mmol/g）。又通过大量实验，制备的Mg-MOF-74在25℃、0.1MPa条件下具有非常高的CO2吸附量（7.46 mmol/g），均要高于其它金属的MOF-74材料，也达到了结题完成时的指标任务，主要是由于Mg-MOF-74具有较高的比表面积和较轻的金属源质量。

This research adheres to the requirements of the project proposal, and realizes the controllable preparation of hierarchical porous adsorbent materials with high adsorption capacity and stability by using synthetic methods including dual-solvent method, nanoconfinement method and electrodeposition method, combined with molecular modification and structural regulation and tailoring technologies. Subsequently, modification design and optimization studies targeting Lewis acidic and Lewis basic sites were conducted on the as-synthesized hierarchical porous adsorbent materials, to enhance their adsorption selectivity towards gases such as CO2 and H2S.
During the mid-term phase of the project, pre-synthesis modification was employed: while retaining the original framework structure of MIP-207, different proportions of 5-aminoisophthalic acid ligands were doped into the original ligand benzene-1,3,5-tricarboxylic acid, thereby synthesizing MIP-207-NH2 and MIP-207-COOH materials with amino and carboxyl groups incorporated into their frameworks. CO2 adsorption tests were performed on these materials, and their adsorption capacities reached 4.59 mmol/g and 5.03 mmol/g respectively under 25°C and 0.1 MPa, which met the mid-term project target (5 mmol/g) but fell short of the final project target (7 mmol/g).
Later, through extensive experiments, Mg-MOF-74 was prepared. It exhibited an ultra-high CO2 adsorption capacity of 7.46 mmol/g under 25°C and 0.1 MPa, which was higher than that of MOF-74 materials based on other metals. This achievement met the final project target, mainly attributed to the high specific surface area and low mass of the metal source of Mg-MOF-74.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于Mg-MOF-74材料的制备及其CO2吸附分离性能研究，通过合成前修饰和多种方法优化分级孔吸附材料，以提高CO2选择性。在25℃、0.1MPa条件下，制备的Mg-MOF-74展现出7.46 mmol/g的高CO2吸附量，超越了其他金属MOF-74材料，成功达到结题任务目标。