English  |  正體中文  |  简体中文  |  Items with full text/Total items : 70585/70585 (100%)
Visitors : 23081016      Online Users : 567
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version

    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26613

    Title: Phase and reaction equilibria of the acetic acid-isopropanol-isopropyl acetate-water system at 760 mmHg
    Authors: Lee,LS;Kuo,MZ
    Contributors: 化學工程與材料工程學系
    Date: 1996
    Issue Date: 2010-06-29 17:32:23 (UTC+8)
    Publisher: 中央大學
    Abstract: An energy-saving process, the so-called reactive distillation process, is attracting more and more attention in the chemical industry. This process is based on the simultaneous implementation of chemical reaction and phase equilibria in a process unit. The esterification of acetic acid and isopropyl alcohol is one of the processes that use this technology. In order to understand the thermodynamic behavior of this mixture and its reaction products, isopropyl acetate and water, the vapor-liquid equilibrium (VLE) was measured directly with the chemical reaction considered. The esterification reaction rate of acetic acid and isopropanol mixture is very slow, In this study, para-toluenesulfonic acid was selected as the catalyst to accelerate the chemical reaction. This results in the reaction reaching equilibrium before phase equilibrium so that this complicated problem can be simplified and readily solved. The equilibrium compositions of this mixture at different temperatures were measured. The reaction equilibrium constants were calculated with the collected experimental data and the equations of reaction and phase equilibria. It was found that the reaction equilibrium constant was slightly dependent on temperature. The measured VLE data were correlated by the activity coefficient models of UNIQUAC and Wilson with consideration of the association of acetic acid in the vapor phase. The calculated results show that the correlation was successful as compared with experimental data.
    Appears in Collections:[化學工程與材料工程研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat

    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明