Thermal Stability and Heat Capacity Characterization of 1 ,6-Bis(Trioctyiphosphonium-1-yi)Decane Chloride

• Main Author: Jasmi, Farahiyah
• Format: Final Year Project
• Language: English
• Published: Universiti Teknologi Petronas 2010
• Subjects: TP Chemical technology
• Online Access: http://utpedia.utp.edu.my/9290/1/2010%20-%20Thermal%20Stability%20and%20Heat%20Capacity%20Characterization%20of%201%2C6-BIS%20%28Trioctylphosphonium-1-YL%29.pdf; http://utpedia.utp.edu.my/9290/

Manmade carbon dioxide, (COz) emission to the atmosphere is expected to increase in the next 100 years and this will seriously have a huge impact on the environment in the future. Fossil fuel is one of the most important sources of energy in the world today. This includes petroleum, coal and natural gas. In the oil and gas industry, natural gas exists in two forms, which are sweet gas (lowly contaminated) and sour gas (highly contaminated), usually by COz and HzS. To make use of this sour gas which is available in abundance, separation processes are required to first purify them. Currently used absorbents for COz absorption such as amines have been found to be effective in the removal of COz; 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 liquid, (IL) is another potential absorbent for separation of COz from natural gas stream and flue gas stream. ILs are in liquid state under atmospheric conditions at room temperature with specific properties that make them extremely effective as COz absorbents. The unique properties of IL can possibly counter the flaws of amine absorption for this purpose. Dicationic ionic liquid (DCIL) is a newer type of ionic liquid which possess higher thermal stabilities and non-volatility. This new IL is needed to be characterized in term of heat capacity and thermal stability since the data is not much publicly reported for researchers to consult. Characterization on these thermophysical properties will be done on dicationic phosphonium-based symmetrical ionic liquid that is 1,6-bis(trioctylphosphonium-1-yl)decane chloride through lab experiments by using equipment such as Bomb Calorimeter and Fourier Transform Infrared (FTIR) Spectroscopy. Additional experiment is done to evaluate performance of C02 solubility in the DCIL sample at room temperature and ambient pressure using COz absorption system.