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Drying of Ionic Liquid

Sulaiman, Mohammad Norazry (2013) Drying of Ionic Liquid. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Room Temperature Ionic Liquids (RTILs) are salts in liquid phase. Continuous use of RTIL in a process may cause it to be contaminated with water and organic impurities over time. It is necessary to regenerate and purify the RTIL for recycle purposes. Drying is needed during pre-treatment and purification of IL solution before it can be used in any application to reduce weight, increase ease of handling and eliminate unwanted effects of moisture content towards IL properties. Drying process of ionic liquid is important since moisture levels that are too high may affect performance and reliability in most applications such as during synthesis of RTILs using aqueous solution to necessitate anion exchange and also in concentrating Benfield solution for recycles purposes during removal of CO2. Therefore, to obtain the most optimum condition of drying for ionic liquids, the study on kinetic of drying is reported here by investigate the effects of different operating temperature towards drying of ionic liquid, effect of different anion and cation and drying using different equipment. Ionic liquids containing [bmim] cation with [SO4]- or Phosphate-containing anion were used and drying methods applied were halogen lamp and vacuum drying methods. Thermogravimetric analysis which measures change of mass over time throughout the drying process was used to generate primary drying curves which were then manipulated to get secondary kinetic data. The drying process mainly occurred during falling rate period. Samples dried under higher temperature using vacuum drying have higher maximum drying rates, lower final moisture contents, higher drying constants and shorter drying times. The same result is observed for samples containing smaller anion.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Ionic Liquid
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 09 Oct 2013 11:07
Last Modified: 09 Oct 2013 11:07
URI: http://utpedia.utp.edu.my/id/eprint/8473

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