Acetylene, an important petrochemical feedstock, is the starting chemical to produce many polymer products. Separating C₂H₂ from its by‐product mixtures is still an energy‐consuming process and remains challenging. Here, we present a metal–organic framework[Zn₂(bpy)(btec)], with a desirable pore geometry and stable framework, which demonstrated a high separation performance of C₂H₂ from simulated mixtures. With the desirable pore dimension and hydrogen bonding sites, Zn₂(bpy)(btec) shows by far the both highest C₂H₂/C₂H₄ and C₂H₂/CO₂ uptake ratios, very high adsorption selectivities and moderately C₂H₂ uptake of 93.5 cm³/cm³ under 298 K and 1 atm. Not only straightforwardly produced high purity of C₂H₄, but also recovered high purity of C₂H₂ (>98%) in the regeneration process (>92% recovery). More notably, Zn₂(bpy)(btec) can be straightforwardly synthesized at a large scale under environmentally friendly conditions, and its good water/chemical stability, thermostability, and cyclic stability highlight the promise of this molecular sieving material for industrial C₂H₂ separation.

中文翻译：

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具有良好匹配的孔腔的稳定的金属-有机骨架，可有效分离乙炔

乙炔是一种重要的石油化工原料，是生产许多聚合物产品的起始化学品。从副产物混合物中分离出C ₂ H ₂仍然是一个耗能的过程，并且仍然具有挑战性。在这里，我们介绍了一种金属-有机骨架[Zn ₂（bpy）（btec）]，具有理想的孔几何形状和稳定的骨架，证明了C ₂ H ₂从模拟混合物中的高分离性能。Zn ₂（bpy）（btec）具有理想的孔尺寸和氢键结合位点，迄今为止显示出最高的C ₂ H ₂ / C ₂ H ₄和C ₂ H ₂/ CO ₂吸收比，极高的吸附选择性和在298 K和1个大气压下适度的C ₂ H ₂吸收93.5 cm ³ / cm ³。不仅直接产生了高纯度的C ₂ H ₄，而且还在再生过程中回收了高纯度的C ₂ H ₂（> 98％）（回收率> 92％）。更值得注意的是，Zn ₂（bpy）（btec）可以在环境友好的条件下直接大规模地合成，并且其良好的水/化学稳定性，热稳定性和循环稳定性突出了这种分子筛材料用于工业C ₂ H的前景。_2个 分离。