Realization of Ethylene Production from Its Quaternary Mixture through Metal-Organic Framework Materials. - 文章详情页

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Ethylene　production　from　oxidative　coupling　of　methane　is　a　sustainable　and　economically　attractive　alternative　to　that　through　traditional　hydrocarbon　cracking　technology.　However,　efficient　ethylene　separation　from　the　complex　reaction　mixture　is　a　daunting　challenge　that　hinders　the　practical　adoption　of　this　technology.　Herein,　we　report　the　efficient　adsorptive　separation　of　the　CH4/CO2/C2H4/C2H6　mixture　using　three　representative　metal-organic　frameworks　(MOFs)　(UTSA-74,　MOF-74,　and　HKUST-1)　with　diverse　open　metal　sites.　The　efficient　separation　relies　on　tuning　the　selectivity　through　the　convergence　of　characteristics　including　Lewis　acidity　of　open　metal　sites,　pore　space,　and　cooperative　binding　behavior.　The　separation　performance　of　these　materials　has　been　evaluated　through　single-component　gas　adsorption　and　dynamic　breakthrough　experiments.　HKUST-1　provides　the　highest　separation　potential　(4.1　mmol/g)　thanks　to　its　simultaneously　high　ideal　adsorbed　solution　theory　(IAST)　selectivity　and　ethylene　adsorption　capacity,　representing　a　benchmark　material　for　such　a　challenging　quaternary　separation.

关键词：

ethylene metal−organic frameworks open metal site oxidative coupling of methane separation

作者机构：

[ 1 ] [Zhang Xin]Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, P. R. China
[ 2 ] [Cui Hui]Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
[ 3 ] [Lin Rui-Biao]MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
[ 4 ] [Krishna Rajamani]Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
[ 5 ] [Zhang Zhi-Yin]College of Chemistry and Materials Science, Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, Jinan University, Guangzhou 510632, P. R. China
[ 6 ] [Liu Ting]Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
[ 7 ] [Liang Bin]Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
[ 8 ] [Chen Banglin]Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States

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