Thermal analysis of kerosene with 1,2-methyl ethyl 1-methyl pyrrolidinium bis(trifluoromethanesulfonyl) amide as an addi
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Thermal analysis of kerosene with 1,2‑methyl ethyl 1‑methyl pyrrolidinium bis(trifluoromethanesulfonyl) amide as an additive Nandakumar Subramanian1 · Sivapirakasam Suthangathan Paramashivan1 · Surianarayanan Mahadevan2 · Vijayaraghavan Renganathan3 Received: 14 November 2019 / Accepted: 5 May 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract This paper reports the thermal characterization of kerosene fuel-doped ionic liquid (1, 2-methylethyl 1-methyl pyrrolidinium bis(trifluoromethanesulfonyl) amide) (MEMP TFSA), an antistatic additive used in jet fuel engines. The ionic liquids (ILs) samples are prepared with the mass of 5, 10 and 15% in the kerosene fuel. These fuel samples are subjected to thermal decomposition studies at different scanning rates of 5, 10 and 15 °C min−1 using the differential scanning calorimetry (DSC) method. The onset temperatures of exothermic reactions of kerosene-doped ILs are increased from 360–465 °C, when the mass percentage of ILs increased in the kerosene fuel. The boiling point of the kerosene-doped ILs was displaced to the higher temperature when compared to the pure kerosene. This showed that the doping of antistatic additives of ILs with kerosene increased its thermal stability property than the pure kerosene fuel. The thermo-kinetic studies are also carried out using Ozawa’s Kinetic method to determine the activation energy (Ea) and pre-exponential factor (A). The FTIR analysis showed that the kerosene-doped ionic liquid forms a homogenous mixture rather than prevailing separately. Keywords MEMP TFSA · Ionic liquid · Kerosene · Thermal analysis · DSC Abbreviations MEMP 1,2-Methylethyl 1-methyl pyrrolidinium TFSA Bis(trifluoromethanesufonyl) amide IL Ionic liquid DSC Differential scanning calorimetry FTIR Fourier transform infrared spectroscopy Ea Activation energy A Pre-exponential factor To Onset temperature Tp Peak temperature
* Sivapirakasam Suthangathan Paramashivan [email protected] Nandakumar Subramanian [email protected] Surianarayanan Mahadevan [email protected] 1
Industrial Safety Lab, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620 015, India
2
Cell for Industrial Safety and Risk Analysis, Central Leather Research Institute, Chennai, Tamil Nadu 600 020, India
3
School of Chemistry, Monash University, Melbourne, Australia
ΔHd Heat of decomposition β Heating rate
Introduction Kerosene-based fuels are used in the various industrial applications. Particularly, it is used as the fuel for the rocket propellants as well as a cooling media at the thrust chamber of jet engine. Due to the low conductivity of the kerosene, the static charges will be generated in the fuel during the process of storage and handling. To overcome this issue, a conductive additive has to be added to improve the electrical conductivity of the kerosene [1]. Numerous accidents are reported by the National Transportation Safety Board due to the electrostatic charge development in the pump, filter and fuelling tank [2]. Many researchers widely
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