Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran.
Environ Sci Pollut Res Int. 2021 Jul;28(28):37929-37939. doi: 10.1007/s11356-021-13382-y. Epub 2021 Mar 15.
In this research, a novel composite is synthesized based on activated carbon and MIL-53(Al) through the solution mixing method at different MOF weight fractions, and the CO loading of prepared samples are measured in the batch and continuous apparatus. The structure, crystallinity, surface area, and chemical functionality of activated carbon, MIL-53(Al), and developed composite are characterized through BET, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The CO and N adsorption capacity of activated carbon, MIL-53(Al), and composites are examined in an isothermal batch reactor at the pressure range 0-110 kPa and equilibrium temperature 305 K. The adsorption isotherm of CO is correlated by the Langmuir and Toth models. Besides, the performance of composite is compared with MIL-53(Al) and activated carbon in a continuous packed bed at flow rate range 15-25 ml min and temperature 32 °C, and the breakthrough curves are developed. The results show that increasing MOF content in the composite increases CO adsorption capacity, so the CO loading of synthesized composite containing 10%, 20%, and 30% MOF is 1.608, 1.704, and 1.792 mmol gr, respectively.
在这项研究中，通过溶液混合法在不同的 MOF 重量分数下合成了一种基于活性炭和 MIL-53(Al)的新型复合材料，并在间歇和连续装置中测量了所制备样品的 CO 负载量。通过 BET、X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和傅里叶变换红外光谱 (FTIR) 对活性炭、MIL-53(Al)和开发的复合材料的结构、结晶度、比表面积和化学功能进行了表征。在等温间歇式反应器中，在 0-110 kPa 的压力范围和 305 K 的平衡温度下，研究了活性炭、MIL-53(Al)和复合材料对 CO 和 N 的吸附能力。CO 的吸附等温线通过 Langmuir 和 Toth 模型进行关联。此外，在流速范围为 15-25 ml min 和温度为 32°C 的连续填充床中，将复合材料的性能与 MIL-53(Al)和活性炭进行了比较，并开发了穿透曲线。结果表明，复合材料中 MOF 含量的增加会提高 CO 的吸附能力，因此，含有 10%、20%和 30% MOF 的合成复合材料的 CO 负载量分别为 1.608、1.704 和 1.792 mmol gr。
