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Engineering of Ruthenium-Iron Oxide Colloidal Heterostructures: Improved Yields in CO2 Hydrogenation to Hydrocarbons.
Aitbekova, Aisulu; Goodman, Emmett D; Wu, Liheng; Boubnov, Alexey; Hoffman, Adam S; Genc, Arda; Cheng, Huikai; Casalena, Lee; Bare, Simon R; Cargnello, Matteo.
Affiliation
  • Aitbekova A; Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, 443 Via Ortega, Stanford, CA, 94305, USA.
  • Goodman ED; Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, 443 Via Ortega, Stanford, CA, 94305, USA.
  • Wu L; Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, 443 Via Ortega, Stanford, CA, 94305, USA.
  • Boubnov A; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA, 94025, USA.
  • Hoffman AS; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA, 94025, USA.
  • Genc A; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA, 94025, USA.
  • Cheng H; Thermo Fisher Scientific, 5350 NE Dawson Creek Dr., Hillsboro, OR, 97124, USA.
  • Casalena L; Thermo Fisher Scientific, 5350 NE Dawson Creek Dr., Hillsboro, OR, 97124, USA.
  • Bare SR; Thermo Fisher Scientific, 5350 NE Dawson Creek Dr., Hillsboro, OR, 97124, USA.
  • Cargnello M; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA, 94025, USA.
Angew Chem Int Ed Engl ; 58(48): 17451-17457, 2019 Nov 25.
Article in En | MEDLINE | ID: mdl-31545533
Catalytic CO2 reduction to fuels and chemicals is a major pursuit in reducing greenhouse gas emissions. One approach utilizes the reverse water-gas shift reaction, followed by Fischer-Tropsch synthesis, and iron is a well-known candidate for this process. Some attempts have been made to modify and improve its reactivity, but resulted in limited success. Now, using ruthenium-iron oxide colloidal heterodimers, close contact between the two phases promotes the reduction of iron oxide via a proximal hydrogen spillover effect, leading to the formation of ruthenium-iron core-shell structures active for the reaction at significantly lower temperatures than in bare iron catalysts. Furthermore, by engineering the iron oxide shell thickness, a fourfold increase in hydrocarbon yield is achieved compared to the heterodimers. This work shows how rational design of colloidal heterostructures can result in materials with significantly improved catalytic performance in CO2 conversion processes.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Angew Chem Int Ed Engl Year: 2019 Document type: Article Affiliation country: Estados Unidos Country of publication: Alemania

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Angew Chem Int Ed Engl Year: 2019 Document type: Article Affiliation country: Estados Unidos Country of publication: Alemania