Synthesis and Characterization ofImidazolium Based Ionic Liquid-Intercalated

• Main Author: RAMLI, FATIN NADIAH
• Format: Final Year Project
• Language: English
• Published: Universiti Teknologi PETRONAS 2010
• Subjects: TP Chemical technology
• Online Access: http://utpedia.utp.edu.my/10809/1/2010%20Bachelor%20-%20Systhesis%20%26%20Characterization%20Of%20Imidazolium%20Based%20Ionic%20Liquid-Intercalated%20Bento.pdf; http://utpedia.utp.edu.my/10809/

Intercalation of ionic liquid in clay, mostly imidazolium based ionic liquid has been recently evaluated. However, from the results obtained they have shown low expansion of the interlayer spacing after the process. The low expansion of the interlayer spacing is most probably due to ineffective intercalation process as the process is affected by many factors such as Cations Exchange Capacity (CEC) values of the clay, concentration of ions, temperature and reaction time. Besides that, the commercially available organic modifier has lower thermal stability and caused a limited usage of commercial organo-clay as adsorbents. Thus, ionic liquids which have high thermal stability can be a good alternative to replace the lower thermal stability of conventional organic modifier. Therefore, this project which based on modification of clay with ionic liquids is proposed to analyze other factors that can affect the intercalation process. The parameters that were taken into account; different types of exchangeable cations (e.g. Na+and Ca2+) and types ofhalides in the imidazolium based ionic liquid. The other parameters such as types of clay, concentration of ions, temperature and time of reaction were kept constant. Then, the efficiency of intercalationwas measured as expansion of the basal spacing by X-Ray Diffraction (XRD) analysis, while the thermal stability was evaluated via thermo gravimetric analysis (TGA). Additional qualitative characterization such as Fourier Transform Infrared (FTIR) analysis and observation of morphology structure using Scanning Electron Microscope (SEM) were also conducted. From the results obtained at the end of this project, the bentonite with Na+ exchangeable cations had shown anexpansion in its interlayer spacing (from 13.70 Ato 13.90 A) when reacted with l-Butyl-3-methylimidazolium chloride. Moreover, all the samples had shown a high thermal stability characteristic through TGA Analysis. Thus, they have the potential to encounter the limited usage of commercial organoclay as adsorbents which has low thermal stability.