Effect of palmitic acid and polyethylenepolyamine-based amide-metal salt compositions on the electrical conductivity of diesel fuel
Year: 2026
Type: article
Abstract: In this research work, compositions of amides synthesized from palmitic acid and polyethylenepolyamine at different molar ratios (1:1 and 2:1) with transition metal salts were prepared, and their effect on the electrical conductivity of diesel fuel was studied.The main purpose of the research was to develop effective antistatic additive compositions in order to prevent the generation of static electric charges in diesel fuels and improve the safety indicators of the fuel.For this purpose, compositions based on the Ni, Co, Zn, Cu, Fe, Cr and Mn salts of palmitic acid were prepared and added to the diesel distillate at various concentrations (0.05; 0.1 and 0.15%), with the samples mixed until a homogeneous system was obtained.The electrical conductivity was measured at room temperature and the results obtained were expressed in pS/m units.The measurements were carried out at specific time intervals in order to evaluate both the initial antistatic effect of the additives and their stability over the storage period.As a result of the electrical conductivity measurements, it was established that the prepared additive compositions significantly increase the electrical conductivity of diesel fuel compared to the initial indicator.In particular, the compositions of the palmitic acid:PEPA (1:1 molar ratio) amide with the Co and Cr salts of palmitic acid showed the highest results, with the electrical conductivity at 0.15% concentration reaching 6010 and 6640 pS/m, respectively.Although an increase in electrical conductivity was also observed in the compositions of the amide synthesized at a palmitic acid:PEPA 2:1 molar ratio with the metal salts, it was overall established that the systems obtained at the 1:1 molar ratio were more effective.The observations carried out showed that the prepared compositions demonstrated high stability over a 40-day storage period, with only minor changes recorded in electrical conductivity, which confirms their long-term application prospects.The research results show that the modification of palmitic acid-PEPA-based amide compositions with transition metal salts is a promising approach for increasing electrical conductivity in diesel fuels and, at the same time, has important practical significance for creating effective antistatic additives
Source: PPOR
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7214426232