化工学报2025，Vol.76Issue(5)：2279-2293,15.DOI:10.11949/0438-1157.20241210
Co-MOF-74和Mg-MOF-74的CO工作吸附容量及操作条件
CO working capacity and operating conditions of Co-MOF-74 and Mg-MOF-74
摘要
Abstract
Co-MOF-74 and Mg-MOF-74 represent materials with strong and weak CO binding sites,respectively,and their CO adsorption capacities at room temperature and pressure cannot be evaluated for suitability in the CO/N2 pressure swing adsorption process.The CO working adsorption capacity,regeneration and adsorption heat(Qst)of Co-MOF-74 and Mg-MOF-74 and their corresponding operating temperature and adsorption-desorption pressure were studied by single-component static and two-component dynamic penetration experiments under different operating conditions.The results showed that when the CO/N2 composition was 50％/50％,the optimal operating conditions for Co-MOF-74 were 100℃and 3.0-0.2 bar(total adsorption-desorption pressure),with a working capacity and regenerability for CO of 2.85 mmol·g-1 and 83.82％,respectively,for Mg-MOF-74,at 25℃,2.0-0.2 bar,the working capacity and regeneration for CO were 1.63 mmol·g-1 and 79.51％,respectively.The Qst of Co-MOF-74 at 100℃(34.57 kJ·mol-1)is similar to that of Mg-MOF-74 at 25℃(35.45 kJ·mol-1),indicating that the Qst of the adsorbents with different binding sites for CO was about 35.00 kJ·mol-1,which is considered the optimal operating temperature.This study can provide a reference for the design of pressure swing adsorption process using adsorbents with different CO binding sites.关键词
MOF-74/一氧化碳/吸附/工作吸附容量/再生/吸附热/操作条件Key words
MOF-74/carbon monoxide/adsorption/working adsorption capacity/regeneration/adsorption heat/operating condition分类
化学化工引用本文复制引用
唐磊,王振菲,李聪利,杨佳辉,郑浩,石琪,董晋湘..Co-MOF-74和Mg-MOF-74的CO工作吸附容量及操作条件[J].化工学报,2025,76(5):2279-2293,15.基金项目
山西省杰出青年科学基金项目(202303021223002) （202303021223002）
