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Issue 20, 2013
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Direct conversion of calcium carbonate to C1–C3 hydrocarbons

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Abstract

With the objective of investigating the direct conversion of inorganic carbonates such as CaCO3 to hydrocarbons, assisted by transition metal ions, we have carried out studies on CaCO3 in an intimate admixture with iron oxides (FeCaCO) with a wide range of Fe/Ca mole ratios (x), prepared by co-precipitation. The hydrogen reduction of FeCaCO at 673 K gives up to 23% yield of the hydrocarbons CH4, C2H4, C2H6 and C3H8, leaving solid iron residues in the form of iron metal, oxides and carbide particles. The yield of hydrocarbons increases with x and the conversion of hydrocarbons occurs through the formation of CO. While the total yield of hydrocarbons obtained by us is comparable to that in the Fischer–Tropsch synthesis, the selectivity for C2–C3 hydrocarbons reported here is noteworthy.

Graphical abstract: Direct conversion of calcium carbonate to C1–C3 hydrocarbons

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Publication details

The article was received on 17 Jan 2013, accepted on 11 Mar 2013 and first published on 12 Mar 2013


Article type: Communication
DOI: 10.1039/C3RA40264A
RSC Adv., 2013,3, 7224-7229

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    Direct conversion of calcium carbonate to C1–C3 hydrocarbons

    D. Jagadeesan, Y. Sundarayya, G. Madras and C. N. R. Rao, RSC Adv., 2013, 3, 7224
    DOI: 10.1039/C3RA40264A

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