Indian Journal of Engineering & Materials Sciences

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Enzymatic Synthesis of Castor Oil Hexyl Ester in Liquid Carbon Dioxide Medium and its Potential Application as Biolubricant


Affiliations
1 Department of Oils, Oleochemicals and Surfactants Technology, Institute of Chemical Technology, N.P Marg, Matunga, Mumbai 400 019, India
2 Department of Basic Sciences, School of Basic and Applied Sciences, Galgotias University, Greater Noida, Uttar Pradesh 203 201, India
3 Vigyan Sanchar Bhawan, CSIR-NIScPR, New Delhi 110 012, India
4 Centre for Rural Development and Technology, Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India
 

A novel green method for production of alkyls esters has been discussed in this paper. Liquid carbon dioxide (CO2) can be used as reaction medium and having advantages of green solvent. Enzymatic esterification of castor oil has been carried at 1:3 stoichiometric amount of castor oil to alcohol in presence of immobilized lipase Lipozyme TL IM. The progress of the reaction has been monitored time to time and the maximum yield of 88.3% has been observed within 5 h for hexyl esters. In this process, liquid CO2 has acted as solvent in the reaction system and has increased the mutual solubility between alcohol and castor oil. The produced hexyl esters have been evaluated for tribological properties.

Keywords

Immobilized Lipase, Liquid CO2, Hexyl Esters, Transesterification, Biolubricants.
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  • Enzymatic Synthesis of Castor Oil Hexyl Ester in Liquid Carbon Dioxide Medium and its Potential Application as Biolubricant

Abstract Views: 158  |  PDF Views: 89

Authors

Chandu S Madankar
Department of Oils, Oleochemicals and Surfactants Technology, Institute of Chemical Technology, N.P Marg, Matunga, Mumbai 400 019, India
Subhalaxmi Pradhan
Department of Basic Sciences, School of Basic and Applied Sciences, Galgotias University, Greater Noida, Uttar Pradesh 203 201, India
Narendra Kumar Sahoo
Vigyan Sanchar Bhawan, CSIR-NIScPR, New Delhi 110 012, India
S N Naik
Centre for Rural Development and Technology, Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India

Abstract


A novel green method for production of alkyls esters has been discussed in this paper. Liquid carbon dioxide (CO2) can be used as reaction medium and having advantages of green solvent. Enzymatic esterification of castor oil has been carried at 1:3 stoichiometric amount of castor oil to alcohol in presence of immobilized lipase Lipozyme TL IM. The progress of the reaction has been monitored time to time and the maximum yield of 88.3% has been observed within 5 h for hexyl esters. In this process, liquid CO2 has acted as solvent in the reaction system and has increased the mutual solubility between alcohol and castor oil. The produced hexyl esters have been evaluated for tribological properties.

Keywords


Immobilized Lipase, Liquid CO2, Hexyl Esters, Transesterification, Biolubricants.

References