| Full text | |
| Author(s): |
Santana, Cassia S.
[1]
;
Shine, Luiza S.
[1]
;
Vieira, Luiz H.
[1]
;
Passini, Ricardo J.
[1, 2]
;
Urquieta-Gonzalez, Ernesto A.
[1, 2]
;
Assaf, Elisabete M.
[3]
;
Gomes, Janaina F.
[1]
;
Assaf, Jose M.
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Fed Sao Carlos, Dept Chem Engn, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Res Ctr Adv Mat & Energy, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Sao Paulo, Sao Carlos Inst Chem, BR-13566590 Sao Carlos, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Industrial & Engineering Chemistry Research; v. 60, n. 51, p. 18750-18758, DEC 29 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
In the present work, we investigated the influence of the synthesis method of Nb-promoted Cu/Zn materials on their physicochemical and catalytic properties. Cu/ZnO/Nb2O5 was prepared by coprecipitation (CP), deposition-precipitation (DP), wet impregnation (WI), and incipient wetness impregnation (IW) methods. The physicochemical properties of these materials were investigated by XRF, XRD, N-2 physisorption, SEM, TEM, TEMEDS, H-2-TPR, N2O passivation, and CO2-TPD. According to the results, it was found that when Nb was coprecipitated with copper and zinc (Cu/Zn/Nb-CP) there was the formation of a material with smaller particles, larger specific surface area, larger metallic copper area, and higher basicity than those of the other investigated materials. In the CO2 hydrogenation at 200 degrees C, this catalyst exhibited the best performance in terms of activity (XCO2 = 5.2%) and selectivity to methanol (SMeOH = 70.2%). Further characterization, via in situ DRIFTS, revealed that the formation of methanol over Cu/Zn/Nb-CP occurs via ``RWGS + CO-Hydro{''} and ``formate{''} pathways. (AU) | |
| FAPESP's process: | 18/23601-3 - Multi-approaches strategies for converting CO2 to platform molecules and value-added chemicals: catalysis and electrocatalysis investigations |
| Grantee: | Janaina Fernandes Gomes |
| Support Opportunities: | Scholarships in Brazil - BIOEN - Young Researchers |
| FAPESP's process: | 17/05241-7 - Synthesis of C2+OH alcohols from CO2 hydrogenation in polyfunctional catalysts based on Cu, Rh and Fe |
| Grantee: | Cássia Sidney Santana |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 19/08521-6 - Synthesis and characterization of metal oxide-supported Cu-based catalysts for CO2 hydrogenation: the impact of the preparation method on the materials physicochemical properties |
| Grantee: | Luiza Sanae Shine |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 17/08420-0 - Multi-approaches strategies for converting CO2 to platform molecules and value-added chemicals: catalysis and electrocatalysis investigations |
| Grantee: | Janaina Fernandes Gomes |
| Support Opportunities: | Program for Research on Bioenergy (BIOEN) - Young Investigators Grants |