Texture modification of Mo-V mixed oxides as catalysts for oxidation reactions: application in the oxidative dehydrogenation of propane to propene.

• Grant number: 21/09394-8
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: May 01, 2022
• End date: April 30, 2026
• Field of knowledge: Engineering - Chemical Engineering - Chemical Technology
• Principal Investigator: Leandro Pierroni Martins
• Grantee: Letícia Fernanda Rasteiro
• 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): 23/04673-1 - Molecular-level investigation on Mo-V mixed oxides for propane oxidative dehydrogenation using multiple operando spectroscopies, BE.EP.PD

Abstract

Propylene is an important raw material and has been suffering with high demand and low supply in the global market. Propylene production by propane dehydrogenation (DHP) has been used to try to fill this gap, but this reaction suffers from severe deactivation and is an endothermic reaction, which makes it very costly energetically. A promising alternative to DHP has been found in the oxidative dehydrogenation of propane (ODHP), which has the advantages of being exothermic, operating at lower temperatures, and not suffer from deactivation. Despite the advantages, this reaction suffers from the problem of overoxidation of the product to COX, which is one of the great challenges to be overcome for this reaction. An alternative to avoid overoxidation is the use of CO2 as an oxidizer. Mo-V mixed oxides have been shown to be excellent catalysts for oxidation reactions, but they are low surface area catalysts. The preparation of these materials in different morphologies and on high-area supports are promising strategies and are still little or no explored in the literature. The combination of these materials with the application of the ODHP reaction using CO2 as an oxidizing agent intends to be investigated as a way to try to overcome the challenges that prevail over this reaction.