Preparation and Catalytic Performance of the Porous Polysulfone Microspheres Enabled by Immobilized Ionic Liquids for Esterification

Abstract:

Chloromethylated polysulfone (PSF-Cl) porous microspheres were prepared with non-solvent induced phase inversion method for the immobilization of acidic ionic liquid ([MIMBS][HSO4]). FT-IR, SEM, and ¹H-NMR were used to characterize the structure and property of polysulfone porous microsphere supported ionic liquid (PSF-ILs). The results showed that acidic ionic liquid was supported onto the PSF-Cl porous microspheres by covalent bond. Furthermore, the catalyst exhibited a good catalytic activity with about 57% acetic acid conversion rate after 8h reaction. After the catalyst was reused for 7 times in the synthesis of ethyl acetate, the yield only decreased 6%.

• Periodical: Advanced Materials Research (Volume 1145)
• Pages: 90-94
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1145.90
• Online since: March 2018
• Authors: Yong Dong Zhao, Zhi Ping Zhao*, Shuo Li, Peng Lu
• Keywords: Chloromethylation, Esterification, Ionic Liquid, Phase Inversion, PSF

References

[1] P. Mäki-Arvela, T. Salmi, M. Sundell, K. Ekman, R. Peltonen, J. Lehtonen, Comparison of polyvinylbenzene and polyolefin supported sulphonic acid catalysts in the esterification of acetic acid, Appl. Catal. A- Gen. 184 (1999) 25-32.

DOI: 10.1016/s0926-860x(99)00081-2

[2] L. C. W. Baker, D. C. Glick, Cheminform Abstract: Present general status of understanding of heteropoly electrolytes and a tracing of some major highlights in the history of their elucidation, Chem. Rev. 98 (1998) 3.

DOI: 10.1021/cr960392l

[3] K. Qiao, H. Hagiwara, C. Yokoyama, Acidic ionic liquid modified silica gel as novel solid catalysts for esterification and nitration reactions, J. Mol. Catal. A-Chem. 246 (2006) 65-69.

DOI: 10.1016/j.molcata.2005.07.031

[4] Z. Wu, Z. Li, G. Wu, L. Wang, S. Lu, L. Wang, H. Wan, G. Guan, Brønsted acidic ionic liquid modified magnetic nanoparticle: an efficient and green catalyst for biodiesel production, Ind. Eng. Chem. Res. 53 (2016) 3040–3046.

DOI: 10.1021/ie4040016

[5] Z. Xu, H. Wan, J. Miao, M. Han, C. Yang, G. Guan, Reusable and efficient polystyrene-supported acidic ionic liquid catalyst for esterification, J. Mol. Catal. A-Chem. 332 (2010) 152-157.

DOI: 10.1016/j.molcata.2010.09.011

[6] J. Yang, L. Zhou, X. Guo, L. Li, P. Zhang, R. Hong, T. Qiu, Study on the esterification for ethylene glycol diacetate using supported ionic liquids as catalyst: Catalysts preparation, characterization, and reaction kinetics, process, Chem. Eng. J. 280 (2015).

DOI: 10.1016/j.cej.2015.05.096

[7] Q. Zhang, J. Luo, Y. Wei, ChemInform Abstract: A silica gel supported dual acidic ionic liquid: an efficient and recyclable heterogeneous catalyst for the one-pot synthesis of amidoalkyl naphthols, cheminform, 42 (2011) 2246-2254.

DOI: 10.1002/chin.201114102

[8] J. Yang, Q. Li, J. O. Jensen, C. Pan, L. N. Cleemann, N. J. Bjerrum, R. He, Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells, J. Power Sources. 205 (2012) 114-121.

DOI: 10.1016/j.jpowsour.2012.01.038

[9] J. Yang, J. Wang, C. Liu, L. Gao, Y. Xu, Q. Che, R. He, Influences of the structure of imidazolium pendants on the properties of polysulfone-based high temperature proton conducting membranes, J. Membr. Sci. 493 (2015) 80-87.

DOI: 10.1016/j.memsci.2015.06.010