Role of oxygen vacancies employing GaxZr1-xO2-y/ZrO2 in isobutene generation from ethanol - Pinheiro, Mariana G. S; Chagas, Luciano H; Souza, Eugenio F; Gonzalez, Guilherme G; Zonetti, Priscila C; Alves, Odivaldo C; Rossi, Liane Marcia; Pandoli, Omar Ginoble; Avillez, Roberto Ribeiro de; Borges, Luiz E. P; Appel, Lucia G (Journal of Catalysis, 2025)