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Separation of propane/propylene mixture using MIL-101(Cr) loaded with cuprous oxide nanoparticles: Adsorption equilibria and kinetics study
Chemical Engineering Journal ( IF 15.1 ) Pub Date : 2020-01-22 , DOI: 10.1016/j.cej.2020.124172
Hassan Abedini , Ahmad Shariati , Mohammad Reza Khosravi-Nikou

The performance of the MIL-101(Cr) loaded with cuprous oxide (Cu2O) nanoparticles was evaluated in both equilibrium and kinetic conditions for adsorption of propane and propylene via volumetric method. The single-component adsorption isotherms were measured at temperatures of 303, 323, 343 and 363 K and pressures up to 400 kPa. To correlate the experimental isotherm data points, temperature-dependent Sips model was applied, which exhibited high accuracy of prediction. The synthesized samples were characterized by XRD, BET, FE-SEM, EDS mapping and TEM techniques. The binary mixture adsorption behavior and selectivity of propane/propylene were calculated by using the ideal adsorbed solution theory (IAST). Obtained results showed that by increasing the loading of Cu2O nanoparticles up to 15 wt.%, the propylene selectivity of MIL-101(Cr) was enhanced from 1.5 to 12.2 at 100 kPa and 303 K. Moreover, the optimum performance in terms of both adsorption capacity and selectivity was achieved using 12%[email protected](Cr) sample. Fast diffusion of the adsorbates, obtained by accurate fitting of the isothermal micropore model to the uptake curves data, along with reusability suggest the 12%[email protected](Cr) as a promising adsorbent for effective separation of propane/propylene mixture.



中文翻译:

载有氧化亚铜纳米颗粒的MIL-101(Cr)分离丙烷/丙烯混合物:吸附平衡和动力学研究

在平衡和动力学条件下,通过体积法评估了负载有氧化亚铜(Cu 2 O)纳米颗粒的MIL-101(Cr)的性能。在303、323、343和363 K的温度和最高400 kPa的压力下测量单组分吸附等温线。为了关联实验等温线数据点,使用了温度依赖的Sips模型,该模型具有较高的预测精度。通过XRD,BET,FE-SEM,EDS作图和TEM技术对合成样品进行表征。使用理想吸附溶液理论(IAST)计算丙烷/丙烯的二元混合物吸附行为和选择性。获得的结果表明,通过增加Cu 2的负载量在纳米粒子含量高达15 wt。%的情况下,MIL-101(Cr)在100 kPa和303 K下的丙烯选择性从1.5提高到12.2。此外,使用12%的吸附容量和选择性均获得了最佳性能[受电子邮件保护](Cr)示例。通过将等温微孔模型精确拟合到吸收曲线数据获得的吸附物快速扩散以及可重复使用性表明,12%[email protected](Cr)作为有效分离丙烷/丙烯混合物的有前途的吸附剂。

更新日期:2020-01-22
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