Preparation and Application of Magnetic Nano-Solid Acid Catalyst Fe 3 O 4 -PDA-SO 3 H

Honghai Wang, Yifan Lu, Hongli Liu, Yi Yin and Jun Liang
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Honghai Wang: School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
Yifan Lu: School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
Hongli Liu: School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
Yi Yin: School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
Jun Liang: School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China

Energies, 2020, vol. 13, issue 6, 1-15

Abstract: A magnetic nano-solid acid catalyst Fe 3 O 4 -PDA-SO 3 H was synthetized through an efficient method, as an eco-friendly and more efficient catalyst. The obtained catalyst has uniform core-shell structure, appropriate particle size, and high acid density. Fe 3 O 4 -PDA-SO 3 H was applied to catalyze the esterification of levulinic acid (LA) with alcohols of different chain length to produce the levulinate esters. The catalytic effect was optimized from the aspects of catalyst dosage, reaction temperature, and acid-alcohol molar ratio. Furthermore, the response surface optimization method was used to obtain the optimal conditions. Verified under these conditions, the experimental results showed that the conversion rate of LA can reach 95.87%, which was much higher than common cationic exchange resin Amberlyst 36 and Amberlyst 46. Furthermore, the recovery and reuse of the Fe 3 O 4 -PDA-SO 3 H was demonstrated six times without obvious loss in the activity.

Keywords: magnetic nano-catalyst; levulinic acid; esterification (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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