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

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Presentation on theme: ""Activating Carbon Monoxide and Carbon Dioxide with Organometallic Uranium Complexes- Closing the Carbon Cycle" Geoff Cloke CPD Conference June 22 nd 2012."— Presentation transcript:

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

2 The Carbon Cycle ~80 % of current global energy supply depends on fossil fuels End product of combustion is CO 2 Oil reserves are finite- peak oil will occur Create C-C bonds and/or C-H bonds from CO or CO 2 Uncertainty in petroleum cost and supply demands that alternative sources of primary organic materials be developed. Carbon monoxide as a component of synthesis gas (H 2 + 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

3 Sandwiches!

4 Why Uranium ?? E / volts U IV/III : E ½ = V What to do with all the depleted uranium??! U % U % 5,404,000 tonnes! Uranium(III)- highly reducing

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) n 2-

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

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9 Carbon Dioxide Activation 2 Nikos Tsoureas, unpublished results 2012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 + CO + NO > C >200 0 C<300 0 C 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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