Reactivity and kinetics of 1,3-butadiene under ultraviolet irradiation at 254 nm.

ABSTRACT: The reaction process of gaseous 1,3-butadiene following ultraviolet irradiation at the temperature range from 298 to 323 K under nitrogen atmosphere was monitored by UV-vis spectrophotometry. A gaseous mini-reactor was used as a reaction vessel and could be directly monitored in a UV-vis spectrophotometer. We investigated the reactivity and kinetics of 1,3-butadiene under non-UV and UV irradiation to evaluate its photochemical stability. A second-order kinetic model with 50.48 kJ·mol^-1 activation energy fitted the reaction data for non-UV irradiation, whereas a first-order kinetic model was appropriate in the case of UV irradiation with activation energies of 19.92-43.65 kJ mol^-1. This indicates that ultraviolet light could accelerate the photolysis reaction rate of 1

SUBMITTER: Liang M 

PROVIDER: S-EPMC8857861 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature