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Study of a novel phenolic-ester as antioxidant additive in lube, biodiesel and blended diesel
Raj K. Singh,Aruna Kukrety,Om P. Sharma,Siddharth Baranwal,Neeraj Atray,Siddharth S. Ray 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.37 No.-
A novel phenolic-ester denoted as Bz–4–tBz was synthesized by esterification reaction between the1,2,4,5-benzenetetracarboxylic acid and 3,5-di-tert-butyl-4-hydroxybenyl alcohol in N,N0-dimethyla-cetamide using N,N0-dicyclohexylcarbodiimide as catalyst. The Bz–4–tBz was evaluated as antioxidantin polyol by the rotatory bomb oxidation test while the Rancimat test were also done for evaluating theantioxidant potential in the biodiesel (B100) and blended diesel (B20). The RBOT time of polyol wasobserved to be increased from 6.72 min to 17.42 min when blended 2000 mg/kg Bz–4–tBz in it. Theoxidation stability of biodiesel (B100) and blended diesel (B20) was also found to be increased.
Raj K. Singh,Shubham Pandey,Rakesh C. Saxena,Gananath D. Thakre,Neeraj Atray,Siddharth S. Ray 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.26 No.-
Two additives CySBE-A and B were prepared via a two step synthesis. First, the cystine schiff base (CySB) was synthesized utilizing 3,5-di-t-butyl-4-hydroxybenzaldehyde. In the second step, its esterification with lauroyl alcohol and 2-ethyl hexanol results the final products CySBE-A and B respectively. Both additives were evaluated as multifunctional additive in polyol base oil for antioxidant, antifriction, antiwear and anticorrosion property. Universal oxidation test (IP-306) was used for evaluating antioxidant property. Antifriction and antiwear properties in terms of average friction coefficient and wear scar diameter (WSD) were evaluated using four ball test. The CySBE-A was found to be effective than CySBE-B.