The recovery of C2 hydrocarbons including acetylene, ethylene and ethane is challenging but important for natural gas upgrading. The separation of C2 hydrocarbons over methane was demonstrated here by using a microporous metal-organic framework [Zn₃(OH)₂(SDB)₂] (H₂SDB = 4,4'-sulfonyldibenzoic acid) consisting narrow one-dimensional pore channels. Gas sorption experiments revealed that this MOF material showed considerable uptake capacity for C₂H₂, C₂H₄ and C₂H₆ under ambient conditions, while its capacity for CH₄ was very low. High selectivity from IAST calculations for C₂H₂/CH₄, C₂H₄/CH₄ and C₂H₆/CH₄ binary mixtures demonstrated that this MOF material were promising for efficiently separating important separation of C2 hydrocarbons from methane in natural gas processing.

回收包括乙炔，乙烯和乙烷在内的C2碳氢化合物具有挑战性，但对天然气提质至关重要。本文通过使用微孔金属-有机骨架[Zn ₃（OH）₂（SDB）₂ ]（H ₂ SDB = 4,4'-磺酰基二苯甲酸）组成的一维狭窄孔道证明了甲烷上甲烷的分离。气体吸附实验表明，该MOF材料在环境条件下显示出对C ₂ H ₂，C ₂ H ₄和C ₂ H _6的相当大的吸收能力，而其对CH _4的吸收能力非常低。根据IAST计算，对于C ₂ H ₂ / CH ₄，C ₂ H ₄ / CH ₄和C ₂ H ₆ / CH ₄二元混合物的高选择性表明，这种MOF材料有望有效地分离天然甲烷中重要的C2碳氢化合物与甲烷的分离气体处理。