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通过简单的离子热法,以四(4-氰基联苯基)硅烷作为四面体基块,将其与无水氯化锌在充满氩气气氛的手套箱中充分研磨后密封,分别以400和550℃的反应温度合成了新型多孔芳香骨架材料(PAF-51),得到PAF-51-1(400℃条件下)与PAF-51-2(550℃条件下)的比表面积分别为720和557 m2·g-1(BET).与CH4和N2对比,该材料对CO2具有极好的选择性吸附能力.273 K条件下,CO2/N2分离指数最高可达52.2,CO2/CH4分离指数也达到10.3,这一性质极有可能使得PAF-51成为捕获CO2理想材料,并对再生能源具有潜在的应用.
By simple ionothermal method, tetrakis (4-cyanobiphenyl) silane was used as a tetrahedral base block, which was thoroughly grinded with anhydrous zinc chloride in a glove box filled with argon atmosphere and sealed at 400 (PAF-51) was obtained at a temperature of 550 ℃ and a reaction temperature of 550 ℃. The specific surface area of PAF-51-1 (at 400 ℃) and PAF-51-2 (at 550 ℃) 557 m2 · g-1 (BET) .Compared with CH4 and N2, the material has excellent selective adsorption capacity for CO2.The CO2 / N2 separation index can reach 52.2 at 273 K, and the CO2 / CH4 separation index At 10.3, this property is most likely to make PAF-51 a desirable material for CO2 capture and potential applications for renewable energy sources.