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在热激活的ZIF-67上增强托卢烯吸附:特征,性能和建模见解

Zabiholah Damiri¹, Saeed Jafari¹, Saeed Yousefinejad¹

¹Department of Occupational Health and Safety Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.

|May 20, 2024

概括

氧化伊米达酸框架-67 (ZIF-67) 有效地吸附多烯蒸汽,显示出高容量和可重复使用性. 在热激活后获得最佳性能,参数通过实际应用的吸附模型进行验证.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
化学工程是化学工程的重要组成部分.

背景情况:

像烯这样的挥发性有机化合物 (VOC) 构成环境和健康风险.
吸附材料对于去除VOC至关重要,需要有效和可重复使用的选择.
氧化伊米达酸框架-67 (ZIF-67) 具有气体吸附应用的潜力.

研究的目的:

为了合成和描述ZIF-67用于多烯蒸汽吸附.
在各种条件下研究ZIF-67的动态吸附性能.
评估ZIF-67的可重复使用性和选择性,以消除二烯.

主要方法:

通过室温过程合成ZIF-67.
使用XRD,FT-IR,DLS和SEM进行材料表征.
动态吸附实验和突破曲线分析.
使用Yan,Thomas和Yoon-Nelson模型进行吸附建模.

主要成果:

合成的ZIF-67表现出BET表面积为1578.7 m2/g.
用ZIF-67在干燥空气中在250°C激活时达到最佳吸附能力 (414.5 mg/g).
吸附能力随着多烯度的增加而增加,但随着相对湿度的下降而减少.
ZIF-67显示出高选择性多烯超过乙基和98%的再生效率.

结论:

热激活的ZIF-67是一种高效的多烯蒸汽吸附剂.
操作参数显著影响吸附性能,需要仔细优化.
吸附模型为设计固定床吸附系统提供可靠的数据.
在VOC修复中,ZIF-67显示出实际应用的前景.

关键词:

突破曲线中的突破曲线 MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF MOF 热激活的热激活方式多烯吸附吸附方式减少挥发性有机化合物的减少在ZIF-67中使用.

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