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Pradeep Kumar,Manish Varyani,Praveen K. Khatri,Subham Paul,Suman L. Jain 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.49 No.-
The present work describes a simple, highly efficient and cost effective approach for efficient capturing ofCO2 and its conversion into high value product by using amino acid derived task specific ionic liquids(AAIL). Among the three different kinds of amino acid (histidine, aspartic acid and glutamic acid) derivedionic liquids studied, histidine derived amino acid ionic liquid was found to be an efficient capturingmedium for CO2 and its conversion to corresponding cyclic carbonates by reaction with epoxides underambient reaction conditions at atmospheric pressure using dimethylcarbonate as reaction medium. Thesalient features of the developed methodology are the use of biocompatible amino acid derived ionicliquid, efficient capturing and conversion of carbon dioxide, metal free system, excellent product yieldsand atmospheric pressure condition.
Aathira M.S.,Praveen K. Khatri,Suman L. Jain 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.64 No.-
Cholinium amino acid ionic liquids ([Ch][AA] ILs), composed of renewable biomaterials have recently gained considerable importance in synthetic organic chemistry. In the present study, a series of ([Ch][AA] ILs) with different amino acids such as aspartic acid [Asp], glutamic acid [Glu] and histidine [His] were synthesized. A detailed characterization both structurally and physico-chemically was performed using various analytical techniques.The tribo-performance of synthesized ILs as additives was tested to base oil PEG 200 at varying concentration under the regime of boundary lubrication. Results of tribo-performances revealed that all three ([Ch][AA] ILs) displayed excellent anti-wear and friction reduction properties. The highly viscous nature, inherent polarity and high thermal stability of the ILs suggested that they can form a protective layer to prevent direct contact between tribo-surfaces.