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What would it take for renewably powered electrosynthesis to displace petrochemical processes?
De Luna, Phil; Hahn, Christopher; Higgins, Drew; Jaffer, Shaffiq A; Jaramillo, Thomas F; Sargent, Edward H.
Afiliação
  • De Luna P; Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario M5S 3E4, Canada.
  • Hahn C; Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Higgins D; National Research Council Canada, Ottawa, Ontario K1N 0R6, Canada.
  • Jaffer SA; Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
  • Jaramillo TF; SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.
  • Sargent EH; Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
Science ; 364(6438)2019 04 26.
Artigo em Inglês | MEDLINE | ID: mdl-31023896
ABSTRACT
Electrocatalytic transformation of carbon dioxide (CO2) and water into chemical feedstocks offers the potential to reduce carbon emissions by shifting the chemical industry away from fossil fuel dependence. We provide a technoeconomic and carbon emission analysis of possible products, offering targets that would need to be met for economically compelling industrial implementation to be achieved. We also provide a comparison of the projected costs and CO2 emissions across electrocatalytic, biocatalytic, and fossil fuel-derived production of chemical feedstocks. We find that for electrosynthesis to become competitive with fossil fuel-derived feedstocks, electrical-to-chemical conversion efficiencies need to reach at least 60%, and renewable electricity prices need to fall below 4 cents per kilowatt-hour. We discuss the possibility of combining electro- and biocatalytic processes, using sequential upgrading of CO2 as a representative case. We describe the technical challenges and economic barriers to marketable electrosynthesized chemicals.
Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: Canadá

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Ano de publicação: 2019 Tipo de documento: Artigo País de afiliação: Canadá