| The role of free radical chain reactions in cracking of the residue fraction of Athabasca bitumen was explored by conducting experiments in a batch reactor at 400;Addition of ethylene altered the residue characteristics, giving an increase in the aromatic carbon region and an increase in coke yield. These changes were consistent with reactions between the ethylene and the bitumen radicals. Dilution of the residue may also suppress coke formation under a nitrogen atmosphere, but further studies are required. |
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