Affiliation:
1. Institute of Zhejiang University – Quzhou 99 Zheda Road Quzhou Zhejiang Province 324000 P. R. China
2. School of Chemistry and Chemical Engineering Southeast University Nanjing Jiangsu Province 211189 P. R. China
3. State Key Lab of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 P. R. China
Abstract
AbstractSulphonic acid‐functionalized polymeric ionic liquids (PILs) were synthesized and applied into catalytic conversion of cellulose into levulinic acid (LA). The structure, thermal stability, and Hammett acidity function (H0) of PILs were characterized and all were more thermostable than those of small‐molecular ionic liquids (IL). At the optimum reaction conditions, the LA yield was maximized to 79.4 % by catalyst [Pim]CH3SO3. More importantly, catalyst [Pim]CH3SO3 performed well in other biomass conversion, such as cellobiose, starch and rice husk. The product LA can be easily extracted by methyl isobutyl ketone from the reaction mixture. The PILs with high catalytic activity were easily recycled with an LA yield up to 68.9 % even after five cycles. These sufficient PILs will offer new approaches for transforming biomass to platform chemicals.
Subject
Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Catalysis
Cited by
3 articles.
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