| Full text | |
| Author(s): |
Rossi, Marco A.
;
Vieira, Luiz H.
;
Rasteiro, Leticia F.
;
Fraga, Marco A.
;
Assaf, Jose M.
;
Assaf, Elisabete M.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | REACTION CHEMISTRY & ENGINEERING; v. 7, n. 7, p. 14-pg., 2022-04-07. |
| Abstract | |
Cu-Based materials have been extensively reported as promising catalysts to convert CO2 into value-added chemicals and fuels. Herein, we report In-promoted Cu/CeO2 catalysts (CuCeIn5 and CuCeIn10) prepared by a surfactant-assisted co-precipitation method and applied in the CO2 hydrogenation to methanol. Structural characterization indicated that catalysts were formed in an inverse configuration, consisting of small single-domains of CeO2 particles (5-7 nm) deposited over large Cu particles (55-70 nm). The presence of highly dispersed indium induced a decrease in CeO2 particle size, increasing the interface areas that acted as CO2 adsorption sites, as observed by spectroscopic and temperature-programmed analysis. During CO2 hydrogenation, indium-promoted catalysts led to a remarkable increase of 66% in methanol selectivity compared to the unpromoted system. In situ DRIFTS revealed the formate route as the preferred route for methanol formation. After temperature, pressure, and space velocity optimization through chemometric tools, the In-doped Cu/CeO2 (CuCeIn5) catalyst achieved a methanol selectivity of 99.3% with no CO formation. (AU) | |
| FAPESP's process: | 18/12021-6 - Partial oxidation of methane to methanol catalyzed by single-atom noble metal (Rh, Pd or Pt) supported on doped mesoporous CeO2 (Ce1-xMxO2, M = Zr, Sn or La) |
| Grantee: | Luiz Henrique Vieira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 15/06246-7 - Biorefinery concept applied to biological wastewater treatment plants: environmental pollution control coupled with material and energy recovery |
| Grantee: | Marcelo Zaiat |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Grantee: | Julio Romano Meneghini |
| Support Opportunities: | Research Grants - Research Centers in Engineering Program |
| FAPESP's process: | 17/22671-5 - Ga-Ni nanoparticles supported on porous silica for methanol synthesis from CO2 at low pressures |
| Grantee: | Letícia Fernanda Rasteiro |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 17/10154-6 - Study on catalysts based on metal-metal oxide nanocomposites doped and encapsulated by mesoporous coating for methanol production by CO2 hydrogenation |
| Grantee: | Marco Aurélio de Lima Silva Rossi |
| Support Opportunities: | Scholarships in Brazil - Doctorate |