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使用基于金属有机框架的膜选择性分离提奥芬衍生物

Aigerim Ospanova¹, Kyran Kassym¹, Dana Kanzhigitova^1,2

¹Department of Chemical & Materials Engineering, School of Engineering & Digital Science, Nazarbayev University, Astana 010000, Kazakhstan.

|October 21, 2024

概括

膜中的金属有机框架 (MOF) 有效地从燃料中去除硫化合物. 用银添加的MOF-5膜显示了高的烯吸附性,为传统的水解硫提供了替代方案.

科学领域:

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

背景情况:

燃料中的硫化合物造成环境问题,需要进行深度脱硫.
传统的水解硫 (HDS) 具有局限性,推动了寻找替代方法的研究.
基于膜的脱硫是一种有前途的替代技术.

研究的目的:

研究用于吸附性脱硫的金属有机框架 (MOF) 基膜的使用.
评估用过渡金属 (Ag,Cu,Ni) 合的MOF-5膜在从模型油中去除烯衍生物的效率.
为了比较不同金属合的MOF膜在选择性去除硫化合物的性能.

主要方法:

混合矩阵膜 (MMM) 的合成和表征,其中包含合Ag,Cu和Ni的MOF-5.
描述技术包括SEM,XRD,FTIR和TGA,以确认MOF的结合.
使用模型油进行了脱硫实验,以评估蒂奥芬和二西奥芬的选择性吸附.

主要成果:

通过各种表征技术证实了MOF-5的成功合成和纳入MMM.
MOF-5/Ag膜显示了最高的烯吸附效率,达到86.8%.
MOF-5/Ag的优异性能归因于强烈的银硫相互作用,优于MOF-5/Cu和MOF-5/Ni.

结论:

基于MOF的MMM对运输燃料的吸附脱硫是有效的.
用银添加的MOF-5膜提供了一种高效和选择性的方法来去除硫化合物.
这些发现强调了基于MOF的MMM作为传统HDS方法的可行替代品的潜力.

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