| Full text | |
| Author(s): |
Marcos, Francielle C. F.
;
Assaf, Jose M.
;
Assaf, Elisabete M.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | MOLECULAR CATALYSIS; v. 458, p. 10-pg., 2018-10-01. |
| Abstract | |
Value-added products synthesis by the one-step CO2 hydrogenation reaction has attracted much attention of researchers. In this paper, three catalysts: Cu/V-A1PILC,CuFe/V-AIPILC, and CuCo/V-Al PILC, prepared by impregnation method on Al-pillared clay support were studied. The effect of Fe and Co additives on the physicochemical properties of Cu-based catalysts was characterized by X-ray powder diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), scanning electron microscope (SEM), N-2 adsorption/desorption isotherms, temperature programmed reduction (TPR), Transmission Electron Microscope (TEM), X-ray photoelectron spectroscopy (XPS), N2O decomposition, CO2 and NH3 temperature-programmed desorption (CO2-TPD and NH3-TPD), and Fourier Transform Infrared Spectroscopy after gaseous pyridine adsorption (Py-FTIR) techniques. These catalysts were evaluated for CO2 hydrogenation into value-added products at temperatures ranging from 250 to 300 degrees C for 3 h and 40 bar pressure. Stability test was performed at 250 degrees C for 24 h and 40 bar pressure. The catalytic behavior revealed that a linear relationship does exist between the CO2 conversion with the metallic area. The DME and methanol synthesis showed a correlation with the basic and acid sites. The CuFe/V-Al PILC catalyst showed the highest selectivity for methanol and DME at 250 degrees C. (C) 2017 Published by Elsevier B.V. (AU) | |
| FAPESP's process: | 12/17957-3 - Study of metal catalysts supported on pillared clays for the production of dimethyl ether from synthesis gas. |
| Grantee: | Francielle Candian Firmino Marcos |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| 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 |