Acidity drives selectivity: Tuning reaction pathways of (Pt,Fe)-supported catalysts under hydrodeoxygenation conditions

Author(s)

Strapasson, Guilherme B. ; Bafero, Gabriel B. ; Leite, Davi S. ; Santos, Dyovani B. L. ; Albuquerque, Angela ; Barcelos, Ingrid D. ; Rossi, Liane M. ; Rodella, Cristiane B. ; Zanchet, Daniela

• Document type: Journal article
• Source: APPLIED CATALYSIS B-ENVIRONMENTAL; v. 373, p. 16-pg., 2025-09-15.

Abstract

The design and tuning of active sites (e.g., metallic, acid, and redox sites) are crucial for developing active, selective, and stable catalysts. Metal-support interactions (MSI) and the creation of interfacial sites can tailor the catalytic performance of metal/oxide catalysts for various reactions, directly impacting C-O, C-C, and C-H bond activation and H2 spillover. By modulating the acidity of the support (i.e., Br & oslash;nsted-rich or Lewis-rich), we elucidate the role of acid sites over the acetone hydrodeoxygenation reaction pathways. Br & oslash;nsted-rich catalysts favor the formation of selective C-O bond cleavage products, whereas Lewis-rich catalysts favor C-C coupling + C-O bond cleavage cascade products. We demonstrate that tailoring active sites from the support and constructing active metal-oxide interfacial sites can tune the catalytic performance toward targeted reaction pathways with enhanced stability. Our findings provide insights into C-O, C-C, and C-H bond activation, cleavage, and coupling that can be expanded to multiple catalytic reactions, contributing to the development of new functional materials with enhanced performance. (AU)

• FAPESP's process: 21/13899-8 - Effect of promoters and supports on Cu-Mo2P catalyst for the hydrogenation of CO2 into higher alcohols
• Grantee: Dyovani Bruno Lima dos Santos
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 22/11173-2 - Pincer organometallic complexes in heterogeneous catalysis for organic synthesis and CO2 conversion
• Grantee: Davi dos Santos Leite
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 20/15230-5 - Research Centre for Greenhouse Gas Innovation - RCG2I
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
• Grantee: José Maria Correa Bueno
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 20/12986-1 - Design of nickel catalysts supported on 1D TiO2/Nb2O5 nanostructures
• Grantee: Guilherme Boenny Strapasson
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)