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Development of Ionic Liquids for CO2 Absorption

Ratnakumara, Ravindrakumar (2006) Development of Ionic Liquids for CO2 Absorption. Universiti Teknologi Petronas. (Unpublished)

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The increasing manmade carbon dioxide (CO2) emission to the atmosphere is expected to rise tremendously in the next 100 years, and this will impact the environment seriously in the future. Thus, a substantial focus has been brought forward on improving techniques for CO2 sequestration. Accordingly, the basic objective of this project is to develop several ionic liquids for more optimum carbon dioxide gas absorption and to compare the synthesized liquids versus three commercial ionic liquids, through laboratory experiments and research. Currently used absorbents for CO2 absorption such as amines have been found to be effective in the removal CO2; however, they have notable flaws i.e. high energy requirement for reactivation, corrosion due to formation of acid, and amine degradation and loss. On the other hand, ionic liquids are in liquid state under atmospheric conditions at room temperature with specific properties that make them extremely effective as C02 absorbents. The ionic liquid that is to be developed through this project involves amines functionality group attached to imidazolium ions. Imidazolium based ionic liquids will be prepared through the variation of cation and anion species. The liquids produced; together with some commercially used absorbents; were tested for C02 absorption. Tests using FT-IR spectroscopy were conducted in the end to gauge the success of the experiments. Through this project, a total of six liquids have been produced and tested for CO2 absorption. Comparisons were made with three commercial ionic liquids. All tests yielded positive results where IMI-01 absorbed the most CO2 (1.55 g CO2 absorbed/mole liquid) among the synthesized liquids while C-01 was the best CO2 absorbent (1.80 g CO2 absorbed/mole liquid) among all the ionic liquids tested, FT-IR results also show that amine (Wave Number: 3400-3250 cm"1) was present in the pre-absorbed liquids tested and CO2 (Wave Number: 1820-1650 cm"1) was present in the post-absorbed liquids tested. As a conclusion, the ionic liquids that have been produced in this experiment are all capable ofC02 absorption.

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: 27 Sep 2013 10:58
Last Modified: 25 Jan 2017 09:46
URI: http://utpedia.utp.edu.my/id/eprint/6907

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