Catalytic oxidation of acetone and ethanol on a platinum wire
The current-voltage characteristics of a thin long platinum wire in air with acetone or ethanol small admixtures were obtained. Using the quadratic dependence of platinum resistance on temperature, the temperature-current dependences for the wire were calculated. At concentrations of combustible gas vapors above a certain value, these dependences show a hysteresis character. Using the assumption of acetone and ethanol complete oxidation on platinum, as a catalyst, and the first order of the oxidation reaction, temperature-current dependences was analysised. The temperature difference between the high and low-temperature stationary regimes of catalytic oxidation on the wire makes it possible to estimate the admixture concentration. As a result, the experimental dependence of the critical current value by catalytic ignition and extinction gas mixture on platinum on the admixture concentration was constructed. With its analytical description, it is possible to fairly accurately estimate the apparent values of the activation energy and the pre-exponential multiplier for the oxidation reaction in a wide temperature range. A method of determining the kinetic parameters for the oxidation reaction based on the experimentally found parameters of degeneracy critical conditions is proposed.
N. S. Marinkovic, M. Li, & , R. R., Adzic, Pt-based catalysts for electrochemical oxidation of ethanol, Topics in Current Chemistry, 377(3), 11 (2019); https://doi.org/10.1007/s41061-019-0236-5.
R. Rizo, S. Pérez-Rodríguez, & G. García, Well-defined platinum surfaces for the ethanol oxidation reaction, ChemElectroChem, 6(18), 4725 (2019); https://doi.org/ 10.1002/celc.201900600.
Guangxing Yang, Qiao Zhang, Hao Yu, Feng Peng, Platinum-based ternary catalysts for the electrooxidation of ethanol, Particuology, 58, 169 (2021); https://doi.org/10.1016/j.partic.2021.01.007.
Yunli Ge, Kaixuan Fu, Qian Zhao, Na Ji, Chunfeng Song, Degang Ma, Qingling Liu, Performance study of modified Pt catalysts for the complete oxidation of acetone, Chemical Engineering Science, 206, 499(2019); https://doi.org/10.1016/j.ces.2019.05.051.
Chaoquan Hu, Catalytic combustion kinetics of acetone and toluene over Cu0.13Ce0.87Oy catalyst, Chemical Engineering Journal,.168, 1185 (2011); https://doi.org/ 10.1016/j.cej.2011.02.006.
Mikhail N. Lyulyukin, Alexey S. Besov, Alexander V. Vorontsov, The Inﬂuence of Corona Electrodes Thickness on the Efﬁciency of Plasmachemical Oxidation of Acetone, Plasma Chem Plasma Process, 31, 23 (2011); https://doi.org/10.1007/s11090-010-9265-0.
Zhiwei Wang, Sha Li, Shaohua Xie, Yuxi Liu, Hongxing Dai, Guangsheng Guo, Jiguang Deng, Supported ultralow loading Pt catalysts with high H2O-, CO2-, and SO2-resistance for acetone removal, Applied Catalysis A: General., 579, 106 (2019); https://doi.org/10.1016/j.apcata.2019.04.018.
Guangxing Yang, Qiao Zhang, Hao Yua, Feng Peng, Platinum-based ternary catalysts for the electrooxidation of ethanol, Particuology, 58, 169 (2021); https://doi.org/10.1016/j.partic.2021.01.007.
S.G. Babu, P.A. Priyadarsini, R. Karvembu, Copper on boehmite: A simple, selective, efficient and reusable heterogeneous catalyst for oxidation of alcohols with periodic acid in water at room temperature, Appl. Catal. A Gen. 392 (1-2) (2011) 218–224, https://doi.org/10.1016/j.apcata.2010.11.012.
Francisco Jos´e Morales-Leal, Javier Rivera De la Rosa, Carlos J. Lucio-Ortiz, David A. De Haro Del Río, M.A. Garza-Navarro, Wei Tian, Jose E. Herrera, Monometallic platinum and palladium-based catalysts in the competitive oxidation of methanol over the liquid-phase methanol-ethanol mixtures, Chemical Engineering Journal, 426, 131623 (2021); https://doi.org/10.1016/j.cej.2021.131623.
Mitu Maria, Razus Domnina, Oancea Dumitru, Coupled Catalytic/Gas Phase Ignition of Propane-Oxygen-Inert Mixtures on an Isothermally Heated Platinum Filament Supported on Quartz Bar, Revista de Chimie (Bucharest). 69(4), 870 (2018); https://doi.org/10.37358/RC.18.4.6218.
V.V. Kalinchak, O.S. Chernenko, Thermal physics of flameless combustion of gases (monograph) (Odesa, Astroprint, 2020); http://dspace.onu.edu.ua:8080/handle/123456789/28625
D. A. Frank-Kamenet︠s︡kiĭ, N. Thon, Diffusion and heat exchange in chemical kinetics (Princeton University Press, Princeton, New Jersey, 1955).
John H. Lienhard IV and John H. Lienhard V, A heat transfer textbook, 3rd ed (Cambridge, MA : Phlogiston Press, 2001).