探討鋯金屬有機框架中結構的缺陷程度對於混合基質薄膜之表現的影響;Influences of Defect Degree in Zirconium Metal-Organic Framework on Mixed Matrix Membrane Performance

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Title:	探討鋯金屬有機框架中結構的缺陷程度對於混合基質薄膜之表現的影響;Influences of Defect Degree in Zirconium Metal-Organic Framework on Mixed Matrix Membrane Performance
Authors:	陳秉旭;Chen, Bing-Xu
Contributors:	化學工程與材料工程學系
Keywords:	氣體分離;混合基質薄膜;有機金屬框架;缺陷工程;Gas separation;Mixed Matrix Membranes;Metal-Organic Frameworks;Defect engineering
Date:	2021-08-16
Issue Date:	2021-12-07 11:21:34 (UTC+8)
Publisher:	國立中央大學
Abstract:	數十年來，由於氣體存儲與選擇性分離等領域發展有眾多種應用，用於當作吸附劑的多孔材料的合成和表徵一直是一個活躍的研究領域。但是，如果需要在當今工業中進行分離，則混合基質膜（Mixed Matrix Membranes）是一個不錯的選擇，因為它大大降低了生產成本，並提高薄膜的分離效率。這項研究提出了使用UiO-66 此有機金屬框架(Metal-Organic Framework)作為填充劑分散在PBI 和Pebax? 2533 中製備MMMs。通過這兩種不同高分子聚合物觀察UiO-66 中缺陷的影響是否不同。而 UiO-66 是一種多孔材料，但易於形成缺陷，可以通過調節合成溫度來控制結構中的缺陷。我們使用兩種合成溫度分別是25°C和130°C，從而導致不同程度的缺陷存在於其結構中。然後表徵含有不同缺陷數量之UiO-66 的MMMs，並測量氣體輸送性能以了解UiO-66 中的缺陷對N2 和CO2 滲透性的影響。此次研究發現當UiO-66 結構中所含有的缺陷程度越高，在與PBI 和Pebax 各別製備成MMMs 後薄膜性能都有著明顯之提升，其中 Pebax 系列的MMMs 提升最明顯。;The synthesis and characterization of porous materials as adsorbents has been an active field of research for decades, because of multitudinous applications gas storage to selective separations. However, if it is necessary to perform separations in today’s industry, mixed matrix membranes (MMMs) are a good choice. Therefore, we prepare MMM through porous materials and polymers to prepare high-performance membrane at a lower cost. This research presents the results of using UiO-66 as filler dispersed in PBI and Pebax? 2533. Through these two kinds of polymers to observe whether the effects of defects in UiO-66 are different. UiO-66 is a porous material that is prone to form defects, so we use two synthetic temperatures (25 °C and 130 °C). Resulting in varying degree of defect presence. MMMs are characterized, and gas transport properties are measured to investigate the influence of defects in UiO-66 on the permeability of N2 and CO2. This work finds that the degree of defects contained in the UiO-66 structure is higher, it is added to two kinds of polymers to prepare MMMs. The performance of membrane is significantly improved. Among them, the MMMs of Pebax series improve the most.
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] Electronic Thesis & Dissertation

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