Development of Graphene Supported Catalysts for the Selective CO2 Hydrogenation toward Dimethyl Ether (DME)

• Grant number: 18/18798-2
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2019
• End date: August 31, 2021
• Field of knowledge: Engineering - Chemical Engineering - Chemical Process Industries
• Principal Investigator: Adriana Maria da Silva
• Grantee: Adriana Maria da Silva
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovação (Brasil). São José dos Campos , SP, Brazil
• Associated researchers: Livia Melo Carneiro ; Márcio Steinmetz Soares ; Maurício Ribeiro Baldan

Abstract

This research aims at the development of bi functional catalysts supported on graphene toward the selective dimethyl ether (DME) production from the CO2 hydrogenation, in one step. Therefore, the objective of this study is the development of catalysts with the structure M/graphene-D, where M is a transition metal (Cu, Co, Ni and Pd) and D is a dopant (Nb, Zr, Al and Si). The M site is related to the hydrogenation while the support dopant is the site correlated to the methanol dehydration, which is an intermediate in DME formation. The goal of the dopant introduction is to increase the acid sites in order to promote the methanol dehydrogenation to DME. The catalytic behavior will be correlated with the active sites to the DME selective production. The physicochemical and structural properties of the catalyst will be determined through a detailed characterization as follow: X-Ray Fluorescence (XRF); X-Ray Diffraction (XRD); N2 physisorption; Programmed Temperature of Desorption (CO2 TPD and NH3 TPD); High Resolution Electron Transmission Microscopy (HRTEM) and X-Photoelectron Spectroscopy (XPS). The thermal stability of the catalysts will be investigated by Thermogravimetric Analysis coupled to a Mass Spectrometer. The reaction mechanism will be evaluated through in situ characterization: Programmed-Temperature Surface Reaction (TPSR) and Diffuse Reflectance Fourier Transform (DRIFTS).The catalytic performance on the CO2 hydrogenation will be carried out in a fixed be reactor under temperature, pressure, spatial velocity and H2/CO2, previously optimized. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FRANCHINI, CARLOS A.; LLORCA, JORDI; KUZNETSOV, ALEXEI; SILVA, ADRIANA M.. Outstanding dispersion of CeO2 on reduced graphene oxide. Implications for highly dispersed Pd catalysts. DIAMOND AND RELATED MATERIALS, v. 109, NOV 2020. (18/18798-2)

BARROS, JOAO L. M.; NUNES, MATHEUS M.; ALVES, ODIVALDO C.; FRANCHINI, CARLOS A.; CORAT, EVALDO J.; SILVA, ADRIANA M.. Evaluation of Al2O3 and ZrO2 addition to reduced graphene oxide (rGO) supports and their interplay with Cu sites in the catalyst surface. Inorganic Chemistry Communications, v. 142, p. 6-pg., 2022-06-01. (18/18798-2)

MAIA GOMES, MARIANY LUDGERO; AMARAL-LABAT, GISELE APARECIDA; SILVA DE OLIVEIRA, ANA PAULA; BALDAN, MAURICIO RIBEIRO; DA SILVA, ADRIANA MARIA. Study and characterization of carbon xerogels from tannin-formaldehyde system as catalyst support applications. MATERIA-RIO DE JANEIRO, v. 26, n. 2, 2021. (18/18798-2)

MARIANY LUDGERO MAIA GOMES; GISELE APARECIDA AMARAL-LABAT; ANA PAULA SILVA DE OLIVEIRA; MAURICIO RIBEIRO BALDAN; ADRIANA MARIA DA SILVA. [RETRACTED ARTICLE] Study and characterization of carbon xerogels from tannin-formaldehyde system as catalyst support applications. MATERIA-RIO DE JANEIRO, v. 26, n. 2, 2021-05-28. (18/18798-2)