2026-05-27T04:50:06Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/312352026-02-03T10:58:59Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Ternero-Hidalgo, Juan José author Ruiz-Rosas, Ramiro Rafael author Rosas-Martínez, Juana María author Guerrero-Pérez, María Olga author Rodríguez-Mirasol, José author Cordero-Alcántara, Tomás author 2024 A rigorous kinetic study of the oxidative dehydrogenation (ODH) reaction of propane on a vanadium oxide-based submicron diameter fiber catalyst has been developed. The proposed kinetic model simulates the conversion- selectivity profiles, the surface coverage of the different adsorbed species and the oxidation state of the cata- lyst for the studied operating conditions of temperature, space–time and inlet partial pressures of propane and oxygen. The activation energy of the rate determining step (RDS), the first hydrogen abstraction from propane, is 104 kJ⋅mol 1. The model predicts that although the reaction seems to be pseudo-zero order with respect to oxygen in a broad range of conditions, the catalyst may not be fully oxidized during reaction. The accuracy of the model when predicting the oxidation state of the catalyst has been experimentally confirmed by analyzing the catalytic fixed bed after reaction. The reduction degree of the catalyst will depend on its intrinsic chemical nature and reaction conditions, increasing with the space–time and in detriment of the overall reaction rate. Conse- quently, the propane turnover frequency (TOF) will also depend on the reaction conditions and space–time, even changing along the fixed-bed reactor. Juan José Ternero-Hidalgo, Ramiro Ruiz-Rosas, Juana María Rosas, María Olga Guerrero-Pérez, José Rodríguez-Mirasol, Tomás Cordero, Kinetic study of propane ODH on electrospun vanadium oxide-based submicron diameter fiber catalyst, Chemical Engineering Science, Volume 295, 2024, 120192, ISSN 0009-2509, https://doi.org/10.1016/j.ces.2024.120192. https://hdl.handle.net/10630/31235 https://doi.org/10.1016/j.ces.2024.120192 Catálisis Kinetic study of propane ODH on electrospun vanadium oxide-based submicron diameter fiber catalyst