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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The role of the interface between Cu and metal oxides in the ethanol dehydrogenation

Full text
Author(s):
Finger, Pedro H. [1] ; Osmari, Taynara A. [2] ; Costa, Matheus S. [1] ; Bueno, Jose Maria C. [2] ; Gallo, Jean Marcel R. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Dept Chem, 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
Total Affiliations: 2
Document type: Journal article
Source: APPLIED CATALYSIS A-GENERAL; v. 589, JAN 5 2020.
Web of Science Citations: 3
Abstract

Seeking to understand the role of the interface Cu-support in the dehydrogenative coupling between ethanol and acetaldehyde, mesoporous silica was used as a model support to allow creating Cu nanoparticles interfacing with metal oxides, such as Al2O3, Cr2O3, ZnO and ZrO2. The reaction rate for ethyl acetate formation increased as: 10Cu/MCM-41 < 5Cr(2)O(3)-10Cu/MCM-41 < 5Al(2)O(3)-10Cu/MCM-41 < 5ZrO(2)-10Cu/MCM-41 = 5ZnO-10Cu/MCM-41. It was also found a correlation between the TOF for acetaldehyde or ethyl acetate formation and the ethanol enthalpy of adsorption in the metal oxide. This brings an evidence that the extension of the ethanol dehydrogenation is dependent on the activation of ethanol by the metal oxide and that the dehydrogenative coupling takes place in the interface Cu-(metal oxide). (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