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Type: Artigo de periódico
Title: Styrene Polymerization Efficiently Catalyzed By Iron-containing Imidazolium-based Ionic Liquids: Reaction Mechanism And Enhanced Ionic Liquid Effect
Author: Rodrigues
Thyago Silva; Machado
Fabricio; Lalli
Priscila Micaroni; Eberlin
Marcos N.; Neto
Brenno A. D.
Abstract: Iron-containing imidazolium-based ionic liquids were successfully applied as catalysts in the styrene polymerization. Solventless conditions, organic solvents and different imidazolium-based ionic liquid catalysts were tested to evaluate the best reaction conditions. The ionic liquids BMI.FeCl4 and BMI.Fe2Cl7 showed very distinct catalytic activities. Schulz-Flory distributions indicate two or three active catalytic species in different distributions. Via on-line direct infusion electrospray (tandem) mass spectrometry (ESI-MS(/MS)) reaction monitoring, both active catalytic species in accordance with the Schulz-Flory distributions were intercepted and characterized, providing important mechanistic insights that allowed us to propose a rationale for the origin of the superior catalytic efficiency. (C) 2014 Elsevier B.V. All rights reserved.
Subject: Biginelli Reaction
Rights: embargo
Identifier DOI: 10.1016/j.catcom.2014.11.002
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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