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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|
Thyago Silva; Machado
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.|
|Editor:||ELSEVIER SCIENCE BV|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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