Syngas for Fischer-Tropsch synthesis by methane tri-reforming using nickel supported on MgAl2O4 promoted with Zr, Ce and Ce-Zr

Autor(es)

Paladino Lino, Ananda Vallezi ^[1] ; Colmenares Calderon, Yormary Nathaly ^[2] ; Mastelaro, Valmor Roberto ^[2] ; Assaf, Elisabete Moreira ^[3] ; Assaf, Jose Mansur ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Engn Quim, Rod Washington Luis Km 235, Sao Carlos, SP - Brazil

^[2] Inst Fis Sao Carlos, Dept Fis & Ciencias Mat, Av Trabalhador Sao Carlense 400, Sao Carlos, SP - Brazil

^[3] Univ Sao Paulo, Inst Quim Sao Carlos, Av Trabalhador Sao Carlense 400, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Surface Science; v. 481, p. 747-760, JUL 1 2019.
• Citações Web of Science: 1

Resumo

Nickel catalysts supported on magnesium aluminate promoted with ZrO2, CeZrO2 and CeO2 were evaluated under methane tri-reforming reaction. MgAl2O4 synthesis was assisted by P123 (R) surfactant, assuring high porosity. The catalysts were tested at 650 degrees C and 750 degrees C. Zr and Ce-Zr promoted catalysts showed less coke deposition and increased conversions, mainly at 750 degrees C, while the non-promoted catalyst featured lowest reactants conversion due to an unstable performance caused by filamentous coke deposition. The H-2/CO ratio produced at 750 degrees C was at around 2, suitable to FT synthesis. In situ XPD analysis suggested nickel remained active as Ni-0 throughout the reaction, even in the oxidant environment, containing water and oxygen, and high-temperature exposure. Considering that nickel oxidation during the process is one of the concerns related to the catalyst deactivation during tri-reforming of methane, along with carbon deposition, these catalysts are promising to active and stable syngas production. (AU)

• 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: 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