Reaction Performance of Propylene Carbonate Manufacturing by Using a Green Synthetic Route

Abstract:

The CO₂ fixation reaction performance was carried out by using propylene oxide (PO) as reactant and medium and ionic liquid as catalyst. Through variation of reaction temperature, pressure and catalyst ratio and amount, it was found that the reaction was under kinetic control, for pressure ranging from 15 to 50 atm, rather than mass transfer control. From the kinetic data, it shows a pseudo first order kinetics with respect to PO concentration under constant CO₂ pressure. The corresponding activation energy was calculated to be 9.152 kcal/mol. The reaction kinetics was independent of catalyst ratio and amount, yet the optimal catalyst ratio of [Bmim]Br/ZnCl₂ is 2 for the fixation reaction. It is also a high conversion reaction, 96.0% (PO), with easier product separation, and as applied to industry for CO₂ reduction process, its kinetic information would be very useful for future industrial scale reactor design.

• Periodical: Advanced Materials Research (Volume 1051)
• Pages: 289-293
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1051.289
• Online since: October 2014
• Authors: Richard S. Horng*, Shin Ku Lee, Mei Lee Hwang, Hsin Ying Tsai
• Keywords: CO₂, Epoxides, Ionic Liquid (IL), Kinetic

References

[1] J.J. Peng, Y.Q. Deng , Cycloaddition of carbon dioxide to propylene oxide catalyzed by ionic liquids, New J. Chem. , 25(2001), 639-641.

DOI: 10.1039/b008923k

[2] H. S. Kim, J. J. Kim, H. Kim, H. G. Jang, Imidazolium zinc tetrahalide- catalyzed coupling reaction of CO2 and ethylene oxide or propylene oxide, J. Catal. 220(2003) 44-46.

DOI: 10.1016/s0021-9517(03)00238-0

[3] D. W. Park, J.Y. Moon, J.G. Yang, J.K. Lee, Catalytic conversion of carbon dioxide using phase transfer catalysts, Energy Convers. Mgmt. 38(1997) suppl. S449-S454.

DOI: 10.1016/s0196-8904(96)00309-3

[4] S.W. Park, D.W. Park, T.Y. Kim, M.Y. Park, K.J. Oh, Chemical kinetics of the reaction between carbon dioxide and phenyl glycidyl ether using aliquat 336 as a catalyst, Catalysis Today 98(2004), 493-498.

DOI: 10.1016/j.cattod.2004.09.002

[5] P. Bonhôte, A.P. Dias, N. Papageorgiou, K. Kalyanasundaram, M. Grätzel, Hydrophobic, highly conductive ambient-temperature molten salts, Inorg. Chem. 35(1996) 1168.

DOI: 10.1021/ic951325x

[6] M. Hasan, I.V. Kozhevnikov, M.R.H. Siddiqui, A. Steiner, N. Winterton, Gold compounds as ionic liquids. synthesis, structures, and thermal properties of N, N'-dialkylimidazolium tetrachloroaurate salts, Inorg. Chem. 38(1999) 5637-5641.

DOI: 10.1021/ic990657p