OXIDATION OF A THIN FILM OF A CARBONACEOUS CHAR AT PRESSURES BELOW 10–4 TORR (1)
1967; Elsevier BV; Linguagem: Inglês
10.1016/b978-1-4832-2901-0.50024-x
Autores Tópico(s)Catalysts for Methane Reforming
ResumoA study has been made of heterogeneous reactions of molecular oxygen with a thin film of carbonaceous char. The reactions are carried out at low pressures in a stirred-flow reactor whose temperature was maintained at values up to 920°C. The production of CO and CO2 is first order in oxygen over this temperature range and the activation energies for CO and CO2 production are 26 and 22 kcal per mole, respectively. A simple mechanism has been proposed to fit the observed experimental facts. This mechanism involves the formation of a peroxy radical site, which can decompose to give molecular oxygen, an O atom and subsequently CO gas, or, a surface oxide which yields CO2.
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