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研究生:葉興憲
研究生(外文):Hsing-Hsian Yeh
論文名稱:以超臨界二氧化碳層析技術探討分子篩5A分離正己烷與環己烷之可行性
論文名稱(外文):Feasibility Study for the Separation of n-Hexane and Cyclohexane by Supercritical Fluid Chromatography with Molecular Sieve 5A
指導教授:梁明在
指導教授(外文):Ming-Tsai Liang
學位類別:碩士
校院名稱:義守大學
系所名稱:化學工程學系暨生物技術與化學工程研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2016
畢業學年度:104
語文別:中文
論文頁數:44
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本文旨在利用超臨界流體層析儀進行正己烷及環己烷在5A級分子篩的滯留行為的探討。本研究以5A級分子篩作為固定相(Stationary phase),超臨界二氧化碳為移動相,調查溫度與壓力對於正己烷及環己烷的滯留行為的影響。研究結果發現,在40℃,2.0 g CO2/min的操作條件下,將壓力由1000 psi增加至1500 psi及2000 psi時,正己烷與環己烷的滯留時間皆隨著壓力增加而延長;在2000 psi,2.0 g CO2/min,將溫度由40℃增加至50℃及60℃時,正己烷與環己烷的滯留時間皆隨著溫度增加而縮短,但是兩者的滯留時間差異不大。由以上結果顯示,正己烷及環己烷在分子篩的滯留行為相似,因此無法有效利用超臨界二氧化碳配合5A級分子篩進行分離。根據實驗結果,本研究利用層析模擬的微分式初步估算環己烷在分子篩中的吸附常數及軸擴散係數,可作為未來環己烷相關分離程序之參考。

This study uses supercritical fluid chromatography (SFC) to investigate the retention behavior of n-Hexane and cyclohexane on the molecular sieves. The isotherms and dispersion coefficients of the cyclohexane in the bed of molecular sieves are obtained by curve fitting from the spectrum of SFC. The studied pressures are 1000, 1500, and 2000 psi, the investigated temperatures are 40, 50, and 60 ℃, and the flow rate of carbon dioxide is 2.0 g/min. The experimental results showed that both the temperature and pressure can affect the isotherms, but the retention behaviors of n-hexane and cyclohexane on the molecular sieves have no significant difference. This study provides a fast and simple method to investigate the isotherms of organic compound on solids. In addition, the collected isotherms will also provide useful information for the future application of the separation of cyclohexane.

中文摘要…………………………………………………………………………...I
英文摘要…………………………………………………………………….…II
第一章 緒論………………………………………………..……………....……1
第二章 文獻回顧………………………………………………………………..3
2.1、異構化製程概述……………………………….……………….…3
2.2、吸附分離原理……………………………………………………..5
2.2.1、吸附種類………………………………………………………..5
2.3、超臨界流體層析技術發展…………………………………….. ..9
2.3.1、超臨界流體概論……………………………….………………9
2.3.2、超臨界流體特性……………………………………………….10
2.3.3、層析法原理…………………………………………………….16
2.3.4、超臨界流體層析……………………………………………….17
2.3.5、各種層析法之比較…………………………………………….19
2.3.6、超臨界二氧化碳之優點………………………………………..20
2.3.7、超臨界流體技術之運用………………………………………..21
2.3.8、超臨界流體發展趨勢………………………………………….23
第三章 實驗方法………………….….……………………………..…………25
3.1、儀器設備………………………………………………..………...25
3.2、實驗藥品………………………………………………..………...27
第四章 實驗結果與討論………………………………………..…………..…28
4.1、以超臨界流體層析調查正己烷及環己烷在固定相滯留行為...28
4.2、層析模擬………………………………………………………….29
第五章 結論………………………………………………….…….…………32
第六章 參考文獻………………………………………….…………………33

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