Kinetic Study of Aluminum – Alginate Catalyzed Esterification of Lactic Acid with 1-Butanol

  • Panarat Rattanaphanee School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
  • Kanungnit Chawong School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
  • Chitkamon Poncharee School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
  • Boonpradab Daengpradab School of Chemical Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand
Keywords: esterification, 1-butanol, lactic acid, sodium alginate, butyl lactate

Abstract

Aluminum-alginate catalyst prepared from aluminum chloride and inexpensive biopolymer sodium alginate is used in lactic acid esterification with 1-butanol. Effect of initial reactant molar ratio, catalyst loading and reaction temperature on the acid conversion is investigated. Maximum conversion of about 81.2% was achieved after 6 h of reaction at 85°C with initial 1-butanol-to-lactic-acid molar ratio of 5 and catalyst loading of 1%w/v. Experimental kinetic data are correlated by pseudo-homogeneous model using UNIFAC to describe non-ideality of the reaction components. Satisfactory agreement between the experimental and calculated data is achieved. The specific rate and equilibrium constant for this reaction are reported.

References

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Published
2017-06-30
How to Cite
Rattanaphanee, P., Chawong, K., Poncharee, C., & Daengpradab, B. (2017). Kinetic Study of Aluminum – Alginate Catalyzed Esterification of Lactic Acid with 1-Butanol. ASEAN Journal of Chemical Engineering, 17(1), 22-28. Retrieved from https://dev.journal.ugm.ac.id/v3/AJChE/article/view/8954
Issue
Vol 17 No 1 (2017)
Section
Articles

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