Investigations on ammonium O, O dicetyl dithiophosphate (ADCTP) as a novel antistatic additive for kerosene fuel - an exploratory study

Abstract

In this study, an organic ligand ADCTP (Ammonium O, O dicetyl dithiophosphate) was synthesized and used as an antistatic additive for the first time in the kerosene fuel. The ignition hazard assessment of the ADCTP dispersed kerosene fuel was evaluated from three aspects: Physical phase structure analysis, thermal analysis and process safety parameters analysis. The physical state and thermal analysis were characterized using experimental techniques such as UV visible spectroscopy (UV), Fourier Transform Infrared Spectroscopy (FTIR), Nuclear magnetic resonance (NMR) and Thermogravimetric analysis (TGA). In order to determine the process safety parameters, the antistatic doped fuel was manifested in terms of electrical conductivity, thermal conductivity, viscosity, stability, aging, and relaxation time. The results indicated an enhancement of electrical conductivity of the kerosene fuel up to 790 pS/m for 1000 ppm addition of ADCTP ligand and it will dissipate the generated and accumulated static charges. The ADCTP dispersed fuel was found to be thermally stable up to 200 °C. A laudable reduction in the relaxation time of static charges from 3 sec to 0.04 sec was also observed. This study revealed that, the organic ligand ADCTP is found to be a potential additive to reduce the ignition hazards.