Synthesis Characterization and Activity Pattern of Cu-ZnO/ZrO2 Catalysts in the Hydrogenation of Carbon Dioxide to Methanol (Articolo in rivista)

Type
Label
  • Synthesis Characterization and Activity Pattern of Cu-ZnO/ZrO2 Catalysts in the Hydrogenation of Carbon Dioxide to Methanol (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jcat.2007.04.003 (literal)
Alternative label
  • Arena, F. ; Barbera, K. ; Italiano, G. ; Bonura, G. ; Spadaro, L. ; Frusteri, F. (2007)
    Synthesis Characterization and Activity Pattern of Cu-ZnO/ZrO2 Catalysts in the Hydrogenation of Carbon Dioxide to Methanol
    in Journal of catalysis (Print); Elsevier, Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Arena, F. ; Barbera, K. ; Italiano, G. ; Bonura, G. ; Spadaro, L. ; Frusteri, F. (literal)
Pagina inizio
  • 183 (literal)
Pagina fine
  • 192 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 249 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 2 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ITAE \"Nicola Giordano\", Messina-Italy ; Università di Messina, Dip. di Chimica Industriale, Messina-Italy (literal)
Titolo
  • Synthesis Characterization and Activity Pattern of Cu-ZnO/ZrO2 Catalysts in the Hydrogenation of Carbon Dioxide to Methanol (literal)
Abstract
  • A novel synthesis route based on reverse co-precipitation under ultrasound irradiation has led to Cu-ZnO/ZrO2 catalysts (Znat/Cuat, 0-3; ZrO2, 42-44 wt%) with a remarkable development of total surface area (SABET, 120-180 m2/g) and very high dispersion (3-58%) and exposure (MSA 9-63 m2/g) of the active Cu phase. The activity pattern in the hydrogenation of CO2 to CH3OH (TR, 433-533 K; PR, 1.0-3.0 MPa) was addressed in comparison with a commercial Cu-ZnO/Al2O3 methanol synthesis catalyst. Volcano-shaped trends in total and metal surface area signal an optimum zinc loading (Zn/Cu, 0.3-0.7), ensuring higher concentration of active sites and methanol productivity values, whereas the basic relationships among dispersion, reducibility, and TOF indicate a structurally sensitive character of the title reaction and a superior reactivity of poorly dispersed Cu particles. Thermodynamic analysis of the reaction stream revealed that methanol formation proceeds along a parallel path, whereas a stronger \"water affinity\" accounts for the poorer performance of the conventional alumina-based catalyst compared with zirconia-based ones. (literal)
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