Methane tri-reforming for synthesis gas production using Ni/CeZrO2/MgAl2O4 catalysts: Effect of Zr/Ce molar ratio

Autor(es)

Paladino Lino, Ananda Vallezi ^[1] ; Rodella, Cristiane Barbieri ^[2] ; Assaf, Elisabete Moreira ^[3] ; Assaf, Jose Mansur ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Chem Engn Dept, BR-13565905 Sao Carlos - Brazil

^[2] Brazilian Natl Synchrotron Light Lab, Rua Giuseppe Maximo Scolfaro 10-000, BR-13083970 Campinas - Brazil

^[3] Univ Sao Paulo, Inst Chem Sao Carlos, BR-13566590 Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 45, n. 15, p. 8418-8432, MAR 18 2020.
• Citações Web of Science: 0

Resumo

Three Ni/CeZrO2/MgAl2O4 catalysts synthesized using different Zr/Ce molar ratios (0.25, 1, and 4) were studied for methane tri-reforming. The catalysts were characterized using XRD, Al-27-NMR, H-2-TPR, CO2-TPD, XPS, and in situ techniques (XPD and XANES). The addition of CeZrO2 at Zr/Ce = 0.25 on the MgAl2O4 spinel support considerably reduced the amount of carbon deposits, because the methane decomposition reaction was attenuated by the presence of less agglomerated Ni-0 species produced after the reduction process. The highest CO2 adsorption capacity (basicity) was associated with the participation of medium-strength basic sites, which facilitated coke gasification and led to higher CO2 conversions. A syngas with quality (H-2/CO ratio) of 1.8 was produced, suitable for use in Fischer-Tropsch reactions. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/25972-8 - Catalisadores à base de Ni/(CeZr)O2-MgAl2O4 e Ni/(X2O3 + ZrO2)-MgAl2O4 (x= la, SM, Y) aplicados à tri-reforma do metano visando produção de hidrogênio e gás de síntese
• Beneficiário: Ananda Vallezi Paladino Lino
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 15/06246-7 - Aplicação do conceito de biorrefinaria a estações de tratamento biológico de águas residuárias: o controle da poluição ambiental aliado à recuperação de matéria e energia
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático