Composite material, tetraethylenepentamine (TEPA) incorporated UiO-66 was prepared by impregnation method to study CO₂ capture in a fixed bed reactor, atmospheric pressure. All synthesized adsorbents were characterized using PXRD, N₂ adsorption–desorption isotherms, FT-IR, TGA, SEM, and Elemental analysis. Characterization results have revealed that incorporated TEPA was present within pores of UiO-66. CO₂ adsorption was higher on TEPA incorporated UiO-66 compared to UiO-66. It was due to the chemical interaction between –NH₂ and CO₂. High CO₂ adsorption capacity 3.70 mmol g⁻¹ was obtained on 30TEPA/UiO-66 at 75 °C, 1 bar. Because of more flexibility and high dispersive nature of TEPA at this temperature. The same CO₂ adsorption capacity was obtained in each adsorption cycle without decomposition of the amine on 30TEPA/UiO-66. Avrami adsorption kinetic model has suggested adsorption of CO₂ on composite material was chemical adsorption and deactivation model suggested an initial rate of adsorption was higher on TEPA incorporated UiO-66.

中文翻译：

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在大气压下使用结合了胺的UiO-66捕集CO 2

采用浸渍法制备了掺有UiO-66的四乙烯五胺（TEPA）复合材料，研究了固定床反应器在大气压下的CO ₂捕集率。使用PXRD，N ₂吸附-解吸等温线，FT-IR，TGA，SEM和元素分析对所有合成的吸附剂进行表征。表征结果表明，掺入的TEPA存在于UiO-66的孔中。与UiO-66相比，在掺入TEPA的UiO-66上的CO ₂吸附更高。这是由于–NH ₂和CO ₂之间的化学相互作用。高的CO ₂吸附能力3.70 mmol g ^-1在30TEPA / UiO-66上于75°C，1 bar下获得。由于TEPA在此温度下具有更大的柔韧性和高分散性。在每个吸附循环中获得相同的CO ₂吸附容量，而胺在30TEPA / UiO-66上没有分解。Avrami吸附动力学模型表明，CO ₂在复合材料上的吸附是化学吸附，而失活模型表明，在结合了UiO-66的TEPA上初始吸附速率更高。