Temperature- and pH-Dependent Kinetics of the Aqueous Phase Hydrogen Sulfide Scavenging Reactions with MEA-Triazine

Iveth Romero, Fernando Montero, Sergey Kucheryavskiy, Reinhard Wimmer, Anders Andreasen, Marco Maschietti*

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

3 Citationer (Scopus)

Abstract

A novel kinetic model for the aqueous phase hydrogen sulfide scavenging reactions using MEA-triazine (HET) is proposed. The assumptions of the model are based on experimental observations obtained by NMR spectroscopy, supporting the existence of 3,5-bis(2-hydroxyethyl)hexahydro-1,3,5-thiadiazine (TDZ) as a quantitative reaction intermediate and showing the protonation behavior of HET and the lack of protonation of 5-(2-hydroxyethyl)hexahydro-1,3,5-dithiazine (DTZ). Experimental kinetic data were obtained with a new in situ Raman spectroscopy setup, which enabled monitoring the time-variation of bisulfide concentrations in a batch stirred reacting system at temperatures of up to 75 °C for HET/HS initial t ti ti f 0 5 t 5 Th ti l d l t were regressed from the experimental data using a brute force optimization method. The rate constants of the first and second scavenging reactions were estimated to be 0.435 and 0.004 L mol−1 s−1 at 25 °C, and the activation energies were 68 and 57 kJ mol−1, respectively (Figure Presented).

OriginalsprogEngelsk
TidsskriftIndustrial and Engineering Chemistry Research
Vol/bind62
Udgave nummer21
Sider (fra-til)8269-8280
Antal sider12
ISSN0888-5885
DOI
StatusUdgivet - 31 maj 2023

Bibliografisk note

Publisher Copyright:
© 2023 American Chemical Society.

Fingeraftryk

Dyk ned i forskningsemnerne om 'Temperature- and pH-Dependent Kinetics of the Aqueous Phase Hydrogen Sulfide Scavenging Reactions with MEA-Triazine'. Sammen danner de et unikt fingeraftryk.

Citationsformater