The gradual conversion of energy systems from fossil/nuclear to regenerative and sustainable requires for the use of solar energy the possibility to store energy in solar fuels. Several concepts have been put forward. We need them all when solar energy should be sued on the level of national grids. Some underlying chemical reactions relevant to all these concepts are elementary steps of water splitting and of CO2 reduction. These redox reactions are still difficult to perform effectively on the scales needed. Catalysis is the strategic science to answer the fundamental questions associated with these difficulties. Examples of water electrolysis and of CO2 reduction to methanol will be used to illustrate the state of affairs and possibilities for breakthroughs.

Role of chemistry in the energy challenge

246th National Meeting (2013)

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