Microreactor assisted method for studying isocyanate–alcohol reaction kinetics

Autor:	Zsolt Fejes, Christian Orlando Camacho López, Béla Viskolcz
Rok vydání:	2019
Předmět:	Fluid Flow and Transfer Processes 010405 organic chemistry Organic Chemistry Inorganic chemistry Alcohol Flow chemistry 010402 general chemistry 01 natural sciences Isocyanate 0104 chemical sciences Catalysis Reaction rate Chemical kinetics chemistry.chemical_compound chemistry Chemistry (miscellaneous) Reagent Microreactor
Zdroj:	Journal of Flow Chemistry. 9:199-204
ISSN:	2063-0212 2062-249X
DOI:	10.1007/s41981-019-00041-0
Popis:	Kinetic parameters of phenyl isocyanate–monoalcohol reactions has been studied using a microreactor system. The monoalcohol components were propan-1-ol, butan-1-ol, propan-2-ol and butan-2-ol. The reactions were conducted in alcohol/THF mixed solvent under pseudo-first-order circumstances at various temperatures. The reaction mixtures were analyzed by off-line HPLC. Reaction rate constants and apparent activation energies have been determined with good precision. The reaction rate constants were higher for the primary alcohols than for the secondary alcohols. Higher apparent activation energy was found for the secondary alcohols compared to the primary ones. The applied technique provides a simple way to study the effects of various factors (e.g. structure of the isocyanate and the alcohol, temperature, solvents, concentration of reagents, catalysis) on the kinetics of the isocyanate–alcohol reactions.
Databáze:	OpenAIRE
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