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.
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