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Multifunctional Polyhedral Oligomeric Silsesquioxane (POSS) Based Hybrid Porous Materials for CO

机译:多功能多面体低聚倍半硅氧烷(POSS)基于CO的杂种多孔材料

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摘要

In this study, two different types of hybrid porous organic polymers (POPs), polyhedral oligomeric silsesquioxane tetraphenylpyrazine (POSS-TPP) and tetraphenylethene (POSS-TPE), were successfully synthesized through the Friedel−Crafts polymerization of tetraphenylpyrazine (TPP) and tetraphenylethene (TPE), respectively, with octavinylsilsesquioxane (OVS) as node building blocks, in the presence of anhydrous FeCl3 as a catalyst and 1,2-dichloroethane at 60 °C. Based on N2 adsorption and thermogravimetric analyses, the resulting hybrid porous materials displayed high surface areas (270 m2/g for POSS-TPP and 741 m2/g for POSS-TPE) and outstanding thermal stabilities. Furthermore, as-prepared POSS-TPP exhibited a high carbon dioxide capacity (1.63 mmol/g at 298 K and 2.88 mmol/g at 273 K) with an excellent high adsorption capacity for iodine, reaching up to 363 mg/g, compared with the POSS-TPE (309 mg/g).
机译:在该研究中,通过Friedel-Crafts聚合的四苯基吡嗪(TPP)和四苯基乙烯(T4)和四苯基乙烯( TPE分别用八戊酰基硅基硅氧烷(OV)作为节点构建块,在无水FECL3的存在下作为催化剂和1,2-二氯乙烷在60℃下。基于N2吸附和热重分析,所得的混合多孔材料显示出高表面积(足以进行270m 2 / g,对于POSS-TPE的741m2 / g)和出色的热稳定性。此外,制备的POSS-TPP具有高碳的二氧化碳容量(1.63mmol / g以298k和2.88mmol / g,273 k),具有优异的碘的吸附能力,达到高达363mg / g,与POSS-TPE(309 mg / g)。

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