Direct synthesis of Cu supported on mesoporous silica: Tailoring the Cu loading and the activity for ethanol dehydrogenation

Author(s)

Finger, Pedro H. ^[1] ; Osmari, Taynara A. ^[2] ; Cabral, Natalia M. ^[1] ; Bueno, Jose Maria C. ^[2] ; Gallo, Jean Marcel R. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Chem, Grp RenewableEnergy Nanotechnol & Catalysis Green, Rod Washington Luis, KM 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Chem Engn, Rod Washington Luis, KM 235, POB 676, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: CATALYSIS TODAY; v. 381, p. 26-33, DEC 1 2021.
• Web of Science Citations: 1

Abstract

One-pot methodologies for the synthesis of copper supported in mesoporous silica was developed. Parameters such as pH, time, and temperature of aging interfered in the loading of Cu impregnated. The Cu loadings affected both the textural properties of the silica support and the Cu nanoparticles. As the Cu loading increases, the catalyst showed more reduced Cu nanoparticles with a higher Cu-Cu coordination number (NCu-Cu). The bond length Cu-Cu (RCu-Cu) also correlates linearly with the NCu-Cu and appears to be dependent on the particle size and not affected by electronic parameters. It was possible to identify that the RCu-Cu parameter correlated linearly with the activity per site of Cu. (AU)

• FAPESP's process: 17/11027-8 - Phosphate-based bifunctional catalysts for conversion of saccharides derived from biomass
• Grantee: Pedro Henrick Finger
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 16/02128-2 - Design of new catalytic systems for the biorefinery
• Grantee: Jean Marcel Ribeiro Gallo
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
• Grantee: José Maria Correa Bueno
• Support Opportunities: Research Projects - Thematic Grants