Abstract
Ionizing radiation has been applied to the reduction of carbon dioxide which is considered to cause the greenhouse warming problem. Carbon dioxide was subjected to 60Co γ-rays in the presence of solution containing either ferrous ions or iron powder. Experimental parameters employed are the radiation dose rate, the total dose and the amount of iron powder or ferrous ion. The gaseous reaction products which contain carbon have been identified as carbon monoxide and hydrocarbons of small molecular weight. The following results are considered very interesting: (1) carbon monoxide has been obtained more predominantly than other gaseous products; (2) in the solution with iron powder, a considerable amount of saturated hydrocarbon has been formed in the order of methane, ethane, propane and n-butane. The results have been interpreted by postulating the formation of a metastable conjugate complex among unsaturated hydrocarbon and iron complexes.
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