Proceedings of nanoGe September Meeting 2017 (NFM17)
Publication date: 20th June 2016
In the future, it is foreseen that we will have transformed our energy supply from fossil fuels to sustainable sources. These will come in the form of solar and wind i.e. in the form of electric energy which is intermittent, thus there will be a need for energy storage in the form of fuels – in particular for those areas that are difficult to electrify, such as aviation and long haul transport. Similarly, will there also be a need for replacing the synthesis of chemicals, which today is based solely on fossil resources. Hydrogen is the simplest solar fuel to produce and while good progress has been made on the hydrogen evolution reaction (HER), ironically it is the oxygen evolution reaction (OER) which is causing the largest energy losses [1]. We shall show how mass selected nanoparticles can be used to elucidate the effectiveness of the various catalysts both for HER [2] and for OER [3, 4]. Hydrogen is an excellent fuel, but very voluminous and it is therefore desirable to have fuels with higher energy densities. Thus, instead of producing hydrogen we could also use the electrochemical cell to hydrogenate CO or CO2. This is also the route to start synthesizing the base chemicals needed for synthesizing chemicals in general. We shall here show how we can investigate the recent ethanol synthesis on oxygen derived Cu found by Kanan et al. [5] and show how acetaldehyde seems to be an important intermediate [6]. New methods for detecting volatile products using a “Sniffer” setup will also be discussed [7] and it will be demonstrated how this principle can be used to study the dynamics of methane and ethylene production on mass-selected Copper nanoparticles [8].
References
[1] W She, et al. SCIENCE (2017) 355 DOI: 10.1126/science.aad4998.
[2] E. Kemppainen et al. Energy & Environmental Science, 8 2991 (2015)
[3] E. A. Paoli, et al. Chemical Science, Chemical Science, 6 190 (2015)
[4] B. Besoek et al. in preparation (2017).
[5] A. Verdaguer-Casadevall et al. J. Am. Chem. Soc. 137 9808 (2015)
[6] E. Bertheussen et al. Angew. Chem. Int. Ed. 55 1450 (2016)
[7] D. T. Bøndergaard, et al. Rev. Sci. Inst. 86 075006 (2015)
[8] D. T. Bøndergaard, et al. Submitted (2017).
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