Eco-friendly multifunction petroleum additives: Preparation, characterization and evaluation

Abstract

ZDDP (zinc dialkyldithiophosphate) is one of the most commonly used petroleum additives as anti-wear, anti-rust and anti-oxidant but it has some environmental problems, so there is a must to find alternative ecofriendly compounds which can replace some of these conventional used petroleum additives. In this study, new compatible mixtures from different natural sources using phospholipids were prepared and their solubility in mineral base oils was evaluated to achieve complete solubility. Some of the prepared mixtures were characterized by FT-IR and then evaluated as anti-rust and anti-oxidant additives for lubricating oils according to standard test methods such as rust preventing characteristics and RPVOT (Rotary Pressure Vessel Oxidation test) for oxidation stability evaluation. The results of evaluation showed an excellent opportunity of widely usage of the vegetable oils derivatives specially Soy Lecithin (SL) in petroleum industry as multifunctional petroleum additives.