Highly selective separation of propylene/propane mixture on cost-effectively four-carbon linkers based metal-organic frameworks  

作　　者：Daofei Lv Junhao Xu Pingjun Zhou Shi Tu Feng Xu Jian Yan Hongxia Xi Zewei Liu Wenbing Yuan Qiang Fu Xin Chen Qibin Xia 

机构地区：[1]School of Environmental and Chemical Engineering,Foshan University,Foshan 528000,China [2]School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510641,China [3]Sichuan Jinyuansheng New Energy Technology Co.,Ltd,Meishan 620010,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第11期126-134,共9页中国化学工程学报（英文版）

基　　金：the financial support from National Natural Science Foundation of China(22108034,21878101);Guangdong Basic and Applied Basic Research Foundation(2020A1515110945,2020A1515110234,2021A1515011336 and 2020A1515110325);National Key Research and Development Program(2019YFC1805804);Guangdong Natural Science Foundation(2017A030313052);Key Program of Marine Economy Development(Six Marine Industries)Special Foundation of Department of Natural Resources of Guangdong Province(GDNRC[2020]036);Characteristic Innovation Research Project of University Teachers(2020XCC08);Foshan Engineering and Technology Research Center for Novel Porous Materials。

摘　　要：The separation of propylene and propane is an important but challenging process,primarily achieved through energy-intensive distillation technology in the petrochemical industry.Here,we reported two natural C4linkers based metal–organic frameworks(MIP-202 and MIP-203)for C_(3)H_(6)/C_(3)H_(8)separation.Adsorption isotherms and selectivity calculations were performed to study the adsorption performance for C_(3)H_(6)/C_(3)H_(8)separation.Results show that C_(3)H_(6)/C_(3)H_(8)uptake ratios(298 K,100 kPa)for MIP-202 and MIP-203 are 2.34 and 7.4,respectively.C_(3)H_(6)/C_(3)H_(8)uptake ratio(303 K,100 k Pa)for MIP-203 is up to50.0.The mechanism for enhanced separation performance of C_(3)H_(6)/C_(3)H_(8)on MIP-203 at higher temperature(303 K)was revealed by the in situ PXRD characterization.The adsorption selectivities of C_(3)H_(6)/C_(3)H_(8)on MIP-202 and MIP-203(298 K,100 k Pa)are 8.8 and 551.4,respectively.The mechanism for the preferential adsorption of C_(3)H_(6)over C_(3)H_(8)in MIP-202 and MIP-203 was revealed by the Monte Carlo simulation.The cost of organic ligands for MIP-202 and MIP-203 was lower than that of organic ligands for those top-performance MOFs.Our work sets a new benchmark for C_(3)H_(6)sorbents with high adsorption selectivities.

关 键 词：PROPYLENE PROPANE Separation Gas Adsorption Metal-organic frameworks 

分 类 号：TQ221.212[化学工程—有机化工]