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Reference type: Journal
Authors: Fan JP, Tian ZY, Tong S, Zhang XH, Xie YL, Xu R, Qin Y, Li L, Zhu JH, Ouyang XK
Article Title: A novel molecularly imprinted polymer of the specific ionic liquid monomer for selective separation of synephrine from methanol-water media.
Publication date: 2013
Journal: Food Chemistry
Volume: 141
Issue: (4)
Page numbers: 3578-3585.
DOI: 10.1016/j.foodchem.2013.06.040
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0308814613008169

Abstract: A novel molecularly imprinted polymer (MIP) using the specific ionic liquid (i.e. 1-vinyl-3-carboxymethylimidazolium bromide, 1-vinyl-3-carboxyethylimidazolium bromide, 1-viny-3-carboxybutylimidazolium bromide, or 1-vinyl-3-carboxypentylimidazolium bromide) as functional monomer was prepared via precipitation polymerization, which can be used to selectively separate synephrine (SYN) from methanol-water media. Ionic liquids are facile to be designed with varying the cation or anion, which enables the specific ionic liquid to be effectively designed to be a functional monomer for the preparation of MIP. The MIP showed a good selectivity and high adsorption capacity for SYN in methanol-water media. The adsorption process could be described by the pseudo-first-order model, which meant that the adsorption kinetics described a diffusion-controlled process. The equilibrium data fitted well to the Freundlich model, indicating multilayer adsorption. Finally, the MIP were successfully applied as sorbent to selectively enrich and separate SYN from the extracts of Aurantii Fructus Immaturus with a relatively high recovery (80-90%)
Template and target information: synephrine, SYN
Author keywords: Molecularly imprinted polymers, Specific ionic liquid, separation, Synephrine, Aurantii Fructus Immaturus

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