Silver and Copper Nitride Cooperate for CO Electroreduction to Propanol |
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| Authors: | Hong Phong Duong Dr Jose Guillermo Rivera de la Cruz Dr Ngoc-Huan Tran Jacques Louis Dr Sandrine Zanna Dr David Portehault Dr Andrea Zitolo Dr Michael Walls Dr Deizi Vanessa Peron Dr Moritz W Schreiber Prof Nicolas Menguy Prof Marc Fontecave |
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| Institution: | 1. Laboratoire de Chimie des Processus Biologiques, CNRS UMR 8229, Collège de France, Sorbonne Université, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France;2. Laboratoire de Chimie du Solide et Energie, CNRS UMR 8260, Collège de France, Sorbonne Université, 1 Place Marcelin Berthelot, 75231 Paris Cedex 05, France;3. Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris (IRCP), 11 rue Pierre et Marie Curie, 75005 Paris, France;4. Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France;5. Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin BP 48, 91192 Gif-sur-Yvette, France;6. CNRS UMR 8502, Université Paris-Saclay, Laboratoire de Physique des Solides, F-91405 Orsay, France;7. Total Research and Technology, Refining and Chemicals, Division CO2 Conversion, Feluy, 7181 Seneffe, Belgium;8. Sorbonne Université, UMR CNRS 7590, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, 75005 Paris, France |
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| Abstract: | The need of carbon sources for the chemical industry, alternative to fossil sources, has pointed to CO2 as a possible feedstock. While CO2 electroreduction (CO2R) allows production of interesting organic compounds, it suffers from large carbon losses, mainly due to carbonate formation. This is why, quite recently, tandem CO2R, a two-step process, with first CO2R to CO using a solid oxide electrolysis cell followed by CO electroreduction (COR), has been considered, since no carbon is lost as carbonate in either step. Here we report a novel copper-based catalyst, silver-doped copper nitride, with record selectivity for formation of propanol (Faradaic efficiency: 45 %), an industrially relevant compound, from CO electroreduction in gas-fed flow cells. Selective propanol formation occurs at metallic copper atoms derived from copper nitride and is promoted by silver doping as shown experimentally and computationally. In addition, the selectivity for C2+ liquid products (Faradaic efficiency: 80 %) is among the highest reported so far. These findings open new perspectives regarding the design of catalysts for production of C3 compounds from CO2. |
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| Keywords: | Bimetallic CuAg CO Electroreduction Flow Electrolyzer Nitride Derived CuAg Catalyst |
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