Duplex theory of origin of petroleum
This theory says that initially the hydrocarbon may be formed abiologically due Fischer - tropsch reaction. Then it must be acted upon by the living organisms like bacteria thus giving rise to the organic hydrocarbon.
The Fischer tropsch reaction is in general the reaction of carbon monoxide with hydrogen giving rise to the hydrocarbon and water.
It can be given as follow:- C+ Fe+H+OH------>CH4+C2H6+C3H8+C4H10+FeO
CO2+HOH+Fe---->CH4+FeO
C+HOH+Fe-->CH4+CO2+H2
Temp needed is 500°C
Robinson in 1963 and Szatmari in 1986 explained the same theory in different forms. Szatmari used plate tectonics to explain it.
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