Physical chemistry of saturated hydrocarbon pyrolysis
Hydrocarbon steam cracking

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J5460 V2 Article

Physical chemistry of saturated hydrocarbon pyrolysis
Hydrocarbon steam cracking

Authors : Claude RAIMBAULT, Gilles LEFEBVRE

Publication date: September 10, 1995 | Lire en français

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2. Physical chemistry of saturated hydrocarbon pyrolysis

2.1 Thermodynamic considerations

From a thermodynamic point of view [1], the unsaturated hydrocarbons we're looking for are only stable in relation to the saturated hydrocarbons that give rise to them at relatively high temperatures (> 350°C). This fact is illustrated in figure 1, which shows the variation, as a function of temperature T (in kelvins), of the free energy of formation ΔGform o relative to a carbon atom, for a number of characteristic hydrocarbon compounds.

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