Etude cinétique de la pyrolyse du n-octane induite par un hydroperoxyde : application à l'évolution thermique des pétroles dans les gisements

Abstract : Mixtures of n-octane and tertiobutylhydroperoxyde (inducer) were pyrolyzed in closed reactor under gas phase at low pressure (about 1 Torr of reactants diluted in 1000 Torr of inert gas) for reaction times of a few hours and temperatures ranging from 200 to 450°C. The hydroperoxyde strongly induced the decomposition of octane without significantly changing the products distribution. The reactions were modelled using a detailed radical mechanism. Complementary studies were performed at 450°C and high pressures (10, 100 and 700 bars). The induction effect of the hydroperoxyde decreased strongly when pressure increased. Yet, significant induction is again observed at 700 bars when a temperature of 250°C is used. Similar results are obtained when using a mixture of hydroperoxyde and a paraffinic oil. The approach using an inducer will allow the study of the thermal decomposition of hydrocarbon mixtures at geological temperatures
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Noroanja Razafinarivo. Etude cinétique de la pyrolyse du n-octane induite par un hydroperoxyde : application à l'évolution thermique des pétroles dans les gisements. Autre. Institut National Polytechnique de Lorraine, 2006. Français. ⟨NNT : 2006INPL030N⟩. ⟨tel-01752552⟩

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