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- W54085064 abstract "The composition and the rates of evolution of light gases and volatile materials from Athabasca and Cold Lake oil sand bitumen and their separated fractions have been described as a function of temperature. From the estimation of the Arrhenius parameters for product formation, it was concluded that both these reservoirs are currently undergoing a slow but measurable thermal decomposition even at the formation temperature. The activation energies for the formation of products for the whole oil sand system were low, ranging between 6 and 26 kcal/mol, indicating the catalytic effects of mineral matter present in the oil sand. Previous work suggests a common origin for these oils, and our own results suggested similar thermal diagenetic histories for the Athabasca and Cold Lake oil sand deposits. Similar studies have now been conducted on the Peace River oil sand to gain deeper insight into the relationships between this oil and the other two oil sands. Preliminary results on the kinetics of consumption of molecular oxygen in the thermolysis of the Athabasca oil sand, extracted bitumen, asphaltene and maltene have shown that the rate of thermolysis of each product was substantially increased in the presence of molecular oxygen and that the rate ofmore » depletion of oxygen followed first order reaction kinetics. Exposure of the oil sand to oxygen resulted in a substantial increase in the asphaltene content of the sample. These studies have been extended to include the effects of oxygen pressure and heating time on the yields of the products from the whole oil sand as a function of temperature in order to clarify geological processes such as the introduction of molecular oxygen into the bitumen via oxidizing ground water and weathering processes occurring at the oil sand outcrops or in piles of mined bituminous sand.« less" @default.
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- W54085064 date "1979-01-01" @default.
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- W54085064 title "Thermolysis and oxidation of the Alberta oil sand bitumen" @default.
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