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"Activating Carbon Monoxide and Carbon Dioxide with Organometallic Uranium Complexes- Closing the Carbon Cycle&quot

"Activating Carbon Monoxide and Carbon Dioxide with Organometallic Uranium Complexes- Closing the Carbon Cycle". Geoff Cloke. CPD Conference June 22 nd 2012. The Carbon Cycle. ~80 % of current global energy supply depends on fossil fuels End product of combustion is CO 2

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"Activating Carbon Monoxide and Carbon Dioxide with Organometallic Uranium Complexes- Closing the Carbon Cycle&quot

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  1. "Activating Carbon Monoxide and Carbon Dioxide with Organometallic Uranium Complexes- Closing the Carbon Cycle" Geoff Cloke CPD Conference June 22nd 2012

  2. The Carbon Cycle • ~80 % of current global energy supply depends on fossil fuels • End product of combustion is CO2 • Oil reserves are finite- peak oil will occur “Uncertainty in petroleum cost and supply demands that alternative sources of primary organic materials be developed. Carbon monoxide as a component of synthesis gas (H2 + CO) from coal and biomass will have a leading role in meeting these needs. ..........develop strategies that use CO as a two-carbon or larger building block to construct the organic materials needed for fuels and chemical manufacturing.” Wayland, Science, 2006 Create C-C bonds and/or C-H bonds from CO or CO2 C≡O 1070 kJ/mol O=C=O 800 kJ/mol

  3. Sandwiches!

  4. Why Uranium ?? Uranium(III)- highly reducing UIV/III: E½ = -2.18 V E / volts What to do with all the depleted uranium??! U235 0.7% U238 99.3% 5,404,000 tonnes!

  5. Cyclisation of Carbon Monoxide O. T. Summerscales, F. G. N. Cloke, P. B. Hitchcock, J. C. Green, and N. Hazari,Science, 2006, 311, 829.

  6. The Oxocarbons (CO)n2-

  7. O. T. Summerscales, F. G. N. Cloke, P. B. Hitchcock, J. C. Green, and N. Hazari, J.Am.Chem. Soc, 2006, 128, 9602. The Next One in the Series- Squarate

  8. + Carbon Dioxide Activation A.S.P. Frey, O.T. Summerscales, F.G.N. Cloke, M.P. Coles, P.B. Hitchcock, Chem.Commun., 2009

  9. Carbon Dioxide Activation 2 Nikos Tsoureas, unpublished results 2012

  10. Coupling of Nitric Oxide and Carbon Monoxide > 6000C >2000C<3000C + CO NO + A.S.P.Frey, F.G.N.Cloke, M.P.Coles, P.B.Hitchcock, Chem. Eur. J.,2010, 16, 9305.

  11. “Methanol Synthesis” A.S. P. Frey, F. G. N. Cloke, M. P. Coles, L. Maron, and T. Davin, Angew. Chem. Int. Ed.2011, 50, 6881

  12. The Future….. Chemically? Electrochemically- controlled potential electrolysis?

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