Synthesis of polyol esters by p-toluenesulfonic acid catalyst as synthetic lubricant oils
Journal: Asian Journal of Green Chemistry (Vol.1, No. 1)Publication Date: 2017-07-01
Authors : Hadi jabbari; Nader Noroozi Pesyan;
Page : 41-45
Keywords : Polyol Esters; Pentaerythritol ester; Trimethylolpropan ester; Synthetic oil;
Abstract
Esterification and transesterification reactions usually carry out in hydrocarbon solvents, such as toluene. Homogeneous acid catalysts such as, sulfuric acid, methane sulfonic acid, and p-toluene sulfonic acid are the most conventional catalysts for this purpose. Application of these catalysts causes some difficulties such as corrosion, and environment probleA most effective and less energy demanding method of producing fatty esters, polyol esters , by esterifying fatty acids, with a pentaerythritol and trimethylolpropan alcohols in the presence of an acid Catalyst at elevated temperature wherein an azeotroping agent , particularly toluene, is used to facilitate continuous removal of water by distillation, formed as a by-product during the esterification reaction.The esterification reaction is completed within 5 hours, pentaerythritol and trimethylolpropan esters was produced .ms
Other Latest Articles
- Microwave-assisted multicomponent reaction for the synthesis of 2-amino-4H-chromene derivatives using ilmenite (FeTiO3) as a magnetic catalyst under solvent-free conditions
- 2,6-Pyridinedicarboxylic acid as an efficient and mild organocatalyst for the one-pot synthesis of xanthene derivative
- Production of biodiesel from jatropha curcas oil using solid heterogeneous acid catalyst
- Synthesis of dihydropyridines and quinoxaline derivatives using 1-methyl-3-(2-(sulfooxy)ethyl)-1H-imidazol-3-ium chloride as a new, reusable and efficient Bronsted acidic ionic liquid catalyst
- PRECANCEROUS LESIONS OF PROSTATE A CLINICO-PATHOLOGICAL STUDY
Last modified: 2018-01-28 14:13:22