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Aqueous Electrochemical Reduction of Carbon Dioxide and Carbon Monoxide into Methanol with Cobalt Phthalocyanine.
Boutin, Etienne; Wang, Min; Lin, John C; Mesnage, Matthieu; Mendoza, Daniela; Lassalle-Kaiser, Benedikt; Hahn, Christopher; Jaramillo, Thomas F; Robert, Marc.
Afiliação
  • Boutin E; Université de Paris, Laboratoire d'Electrochimie Moléculaire, CNRS, 75013, Paris, France.
  • Wang M; Université de Paris, Laboratoire d'Electrochimie Moléculaire, CNRS, 75013, Paris, France.
  • Lin JC; SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Mesnage M; Université de Paris, Laboratoire d'Electrochimie Moléculaire, CNRS, 75013, Paris, France.
  • Mendoza D; Université de Paris, Laboratoire d'Electrochimie Moléculaire, CNRS, 75013, Paris, France.
  • Lassalle-Kaiser B; Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, 91192, Gif-sur-Yvette, France.
  • Hahn C; Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, 91192, Gif-sur-Yvette, France.
  • Jaramillo TF; SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Robert M; SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
Angew Chem Int Ed Engl ; 58(45): 16172-16176, 2019 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-31496012
ABSTRACT
Conversion of CO2 into valuable molecules is a field of intensive investigation with the aim of developing scalable technologies for making fuels using renewable energy sources. While electrochemical reduction into CO and formate are approaching industrial maturity, a current challenge is obtaining more reduced products like methanol. However, literature on the matter is scarce, and even more for the use of molecular catalysts. Here, we demonstrate that cobalt phthalocyanine, a well-known catalyst for the electrochemical conversion of CO2 to CO, can also catalyze the reaction from CO2 or CO to methanol in aqueous electrolytes at ambient conditions of temperature and pressure. The studies identify formaldehyde as a key intermediate and an unexpected pH effect on selectivity. This paves the way for establishing a sequential process where CO2 is first converted to CO which is subsequently used as a reactant to produce methanol. Under ideal conditions, the reaction shows a global Faradaic efficiency of 19.5 % and chemical selectivity of 7.5 %.
Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Angew Chem Int Ed Engl Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: França

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Angew Chem Int Ed Engl Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: França
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