Developing an effective adsorbent for olefin/paraffin separation is a crucial and challenging issue. We have developed an olefin‐selective adsorbent by loading two different Cu(II) salts (CuCl₂ and Cu(CH₃COO)₂) within an iron‐based metal–organic framework (MOF) and reduced them to Cu(I) species without a high‐temperature calcination and an external reducing agent. The successful development of Cu(I)‐loaded MOFs was confirmed by characterizations including scanning electron microscope/energy dispersive X‐ray spectroscopy, X‐ray photoelectron spectroscopy, powder X‐ray diffraction, and Brunauer–Emmett–Teller analyses. From the comparisons between Cu(I)‐loaded MOFs degassed at two different temperatures, we confirmed that the unsaturated Fe(II) sites within the iron‐based MOF can enhance the stability of formed Cu(I) species and thus improve the C₃H₆/C₃H₈ selectivity. The resulted Cu(I)‐loaded MOF shows large C₃H₆ uptake (5.15 mmol/g) and high C₃H₆/C₃H₈ selectivity (8.9) at 100 kPa and 293 K.

中文翻译：

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通过在具有不饱和Fe（II）部位的孔中掺入双Cu（II）盐进行吸附性C3H6 / C3H8分离的简便Cu（I）负载

开发用于烯烃/链烷烃分离的有效吸附剂是关键且具有挑战性的问题。我们通过加载两种不同的Cu（II）盐（CuCl ₂和Cu（CH ₃ COO）₂）置于铁基金属有机框架（MOF）中，无需高温煅烧和外部还原剂即可将其还原为Cu（I）物种。载有Cu（I）的MOF的成功开发得到了以下特征的证实，这些特征包括扫描电子显微镜/能量色散X射线光谱法，X射线光电子能谱，粉末X射线衍射和Brunauer-Emmett-Teller分析。通过在两个不同温度下脱气的负载有Cu（I）的MOF的比较，我们证实铁基MOF中的不饱和Fe（II）部位可以增强形成的Cu（I）物种的稳定性，从而改善C ₃ H ₆ / C ₃ H ₈选择性。生成的装载有Cu（I）的MOF显示出大的C ₃ H在100 kPa和293 K下₆吸收（5.15 mmol / g）和高C ₃ H ₆ / C ₃ H ₈选择性（8.9）。