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Continuous Photo‐Electro‐Catalytic Synthesis of Bio‐Based Adipic Acid with Reaction Kinetics Modeling
Author(s) -
Suhadolnik Luka,
Bajec David,
Žigon Dušan,
Čeh Miran,
Likozar Blaž
Publication year - 2020
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201900104
Subject(s) - catalysis , microreactor , adipic acid , kinetics , chemistry , chemical engineering , materials science , organic chemistry , physics , quantum mechanics , engineering
Photo‐electro‐catalytic oxidation reactions of 1,6‐hexanediol were carried out in a coil‐type continuous‐flow microreactor with an immobilized TiO 2 catalyst material. Bio‐based adipic acid was formed as the only intermediate product before the total mineralization process. The production was stable, enabling green, selective and continuous resource conversion, but with low, non‐optimized yields. In addition, the catalyzed chemical kinetics was modeled, based on mechanisms as well as approximated rate‐determining steps. The Butler‐Volmer relation was used for activation. The electro‐catalytic oxidative pathway was demonstrated to dominate over photo‐catalysis, also on account of the band gap characteristics of the titania nanotube electrode.