Title: Kinetics and mechanism of reaction between carbon disulfide and novel aqueous amines solutions

Authors: Ozge Yuksel Orhan; Fatima Neslisah Cihan; Erdogan Alper

Addresses: Department of Chemical Engineering, Hacettepe University, Beytepe, Ankara, TR 06800, Turkey ' Department of Chemical Engineering, Hacettepe University, Beytepe, Ankara, TR 06800, Turkey ' Department of Chemical Engineering, Hacettepe University, Beytepe, Ankara, TR 06800, Turkey

Abstract: The mechanism and kinetics of carbon disulfide (CS₂) capture by aqueous solutions of well known alkanolamines ([monoethanolamine (MEA) and diethanolamine (DEA)] and novel cyclic mono- and polyamines [morpholine (MRPH), piperazine (PZ), n-methyl piperazine (NMPZ) and n-hydroxyethyl piperazine (NHEPZ)] were investigated by stopped-flow apparatus with conductivity detection. The observed reaction rate constants were obtained for a temperature range of 298.15-313.15 K and it was found that cyclic amines react much faster than others. A modified termolecular reaction mechanism was used to analyse the experimental kinetic data. The activation energies for all systems were also obtained by evaluating the Arrhenius equation.

Keywords: carbon disulfide capture; absorption kinetics; stopped flow; cyclic amines.

DOI: 10.1504/IJGW.2019.101078

International Journal of Global Warming, 2019 Vol.18 No.3/4, pp.401 - 409

Received: 18 Sep 2018
Accepted: 09 Jan 2019
Published online: 23 Jul 2019 *

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