Selected zeolite structures as supports for transition metal oxides for selective conversion of methane into value added chemicals

• Grant number: 19/12201-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: August 01, 2019
• End date: July 31, 2022
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Leandro Pierroni Martins
• Grantee: Natália Hadler Marins
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated research grant: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products, AP.TEM
• Associated scholarship(s): 20/07265-3 - Synthesis of hierarchical mordenite and chabazite zeolites and their catalytic properties, BE.EP.PD

Abstract

In the last years, the obtaining of products from the hydrogenation of carbon dioxide (CO2) has been the focus of researches because it is an environmentally sustainable alternative for the utilization and use of CO2, which is one of the main greenhouse gases and presents high emission levels in the atmosphere. The proposal is that the process occurs in three stages, considering the specificity of each reaction, the kinetics and use of different reagents (hydrogen or oxygen): (1) hydrogenation of CO2; (2) oxidation of methane to methanol with molecular oxygen, and (3) conversion of methanol into products. In this project, porous multifunction catalysts based on metal oxides exchanged with copper oxo-cations or CuFe2O4 impregnated on zeolites will be studied in order to obtain distinguished active sites to conduct the reactions 2 and 3, isolated or coupled in a single reactor. Different reaction conditions and catalytic bed arrangements will be addressed in this project. Characterizations such as XANES, EXAFS and IR-DRIFTS in situ will be used to analyze the contributions of each site under reaction conditions. (AU)

Scientific publications

(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)

MARINS, NATALIA HADLER; PEREIRA, ELEN MARIA FELICIANO; ALAHAKOON, SANDAMINI H.; HUANG, YINING; MARTINS, LEANDRO. Hierarchical chabazites synthesized by combining primary and secondary structure-directing agents. Microporous and Mesoporous Materials, v. 346, p. 10-pg., 2022-11-04. (19/12201-7, 18/01258-5, 20/07265-3, 19/12486-1)