Vapor pressure of aqueous methyldiethanolamine mixed with ionic liquids

Ahmady, A. and Shamiri, A. and Hashim, M.A. and Aroua, M.K. (2013) Vapor pressure of aqueous methyldiethanolamine mixed with ionic liquids. Journal of the Taiwan Institute of Chemical Engineers. pp. 1-7.

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Abstract

Vapor pressure of aqueous methyldiethanolamine (MDEA) mixed with various concentrations of 1-butyl-3-methyl-imidazolium tetrafluoroborate ([bmim][BF4]) and 1-butyl-3-methyl-imidazoliumdi-cyanamide ([bmim][DCA]) have been measured and compared with conventional solvents.A standard response surface methodology (RSM) design, namely central composite design (CCD) has been applied in this work to investigate the effects of temperature and concentration of Piperazine, [bmim][BF4] and [bmim][DCA] on the vapor pressure of aqueous 4 kmol m3 MDEA.The vapor pressure data of aqueous 4 kmol m�3 MDEA mixed with ionic liquids ranging from 0 to 2.0 kmol m�3 and temperatures ranging from 30 to 80 8C, showed that the ionic liquids reduced the vapor pressure of solvents with the order of [bmim][DCA] > [bmim][BF4]. The experimental values are in good agreement with the values predicted by the models. The model results showed that the quadratic model was suitable and sufficient for predicting the vapor pressure of solutions in the investigated ranges of temperature and concentration.

Item Type: Article
Additional Information: Corresponding author. Tel.: +60 3 7967 5206; fax: +60 3 7967 5319. E-mail addresses: mk_aroua@um.edu.my, mkaroua2011@gmail.com (M.K. Aroua).
Uncontrolled Keywords: Vapor pressure; Quadratic model; Ionic liquid; MDEA; Piperazine
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Norhamizah Tamizi
Date Deposited: 28 Apr 2014 01:40
Last Modified: 26 Dec 2014 02:38
URI: http://eprints.um.edu.my/id/eprint/9775

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