A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Reaction kinetics of the Shvo-catalyzed dehydrogenation of 1-phenyl-1,3-propanediol-derived lignin model compound
Tekijät: Badazhkova Veronika D, Savela Risto, Wärnå Johan, Murzin Dmitry Yu, Leino Reko
Kustantaja: Elsevier
Julkaisuvuosi: 2024
Journal: Molecular Catalysis
Tietokannassa oleva lehden nimi: Molecular Catalysis
Artikkelin numero: 113780
Vuosikerta: 553
ISSN: 2468-8231
eISSN: 2468-8231
DOI: https://doi.org/10.1016/j.mcat.2023.113780
Verkko-osoite: https://doi.org/10.1016/j.mcat.2023.113780
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/386839083
The Shvo-catalyst allows to perform hydrogen transfer from the benzylic hydroxyl group of 1-phenyl-1,3-propanediol to 2-butanone. This paper describes kinetic studies on the Shvo-catalyzed dehydrogenation of 1-phenyl-1,3-propanediol as a lignin model compound. The influence of catalyst amount, temperature and the presence of 2-butanol were investigated. It was found that the apparent rate constant of the reaction depends on the catalyst concentration, with the rate expression having 0.5 order in the same. From the study of reaction rates at different temperatures, the apparent activation energy Ea of 1-phenyl-1,3-propanediol conversion was found to be 77 kJ/mol. In the presence of a twenty-fold excess of 2-butanone, the dehydrogenation reaction can be considered as pseudo first order in terms of the substrates. Based on the obtained experimental data, a kinetic model of the dehydrogenation of 1-phenyl-1,3-propanediol, describing the catalyst concentration dependence, temperature influence and the concentrations of 2-butanone and 2-butanol, was developed.
Ladattava julkaisu This is an electronic reprint of the original article. |