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Physical regulation of copper catalyst with a hydrophobic promoter for enhancing CO2 hydrogenation to methanol

Li, Hangjie ; Fang, Wei ; Wang, Ling-Xiang ; Liu, Yifeng ; Liu, Lujie ; Sun, Tulai ; Liao, Ciqi ; Zhu, Yihan ; Wang, Liang ; Xiao, Feng-Shou

Innovation (New York, NY), 2023-07, Vol.4 (4), p.100445-100445, Article 100445 [Periódico revisado por pares]

Elsevier Inc

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  • Título:
    Physical regulation of copper catalyst with a hydrophobic promoter for enhancing CO2 hydrogenation to methanol
  • Autor: Li, Hangjie ; Fang, Wei ; Wang, Ling-Xiang ; Liu, Yifeng ; Liu, Lujie ; Sun, Tulai ; Liao, Ciqi ; Zhu, Yihan ; Wang, Liang ; Xiao, Feng-Shou
  • É parte de: Innovation (New York, NY), 2023-07, Vol.4 (4), p.100445-100445, Article 100445
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The hydrogenation of CO2 to methanol, which is restricted by water products, requires a selective removal of water from the reaction system. Here, we show that physically combining hydrophobic polydivinylbenzene with a copper catalyst supported by silica can increase methanol production and CO2 conversion. Mechanistic investigation reveals that the hydrophobic promoter could hinder the oxidation of copper surface by water, maintaining a small fraction of metallic copper species on the copper surface with abundant Cuδ+, resulting in high activity for the hydrogenation. Such a physically mixed catalyst survives the continuous test for 100 h owing to the thermal stability of the polydivinylbenzene promoter. [Display omitted] •Hydrophobic polydivinylbenzene (PDVB) is physically mixed with a Cu/SiO2 catalyst.•The PDVB improves the performance of the Cu/SiO2 catalyst in CO2 hydrogenation.•The PDVB stabilizes the Cu0 sites against oxidation by water during the catalysis.•The Cu0 and Cuδ+ sites synergistically catalyze the CO2 hydrogenation to methanol.
  • Editor: Elsevier Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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