Ni supported Ce0.9Sm0.1O2-delta nanowires: An efficient catalyst for ethanol steam reforming for hydrogen production

Autor(es):Mostrar menos -

Rodrigues, Thenner S. ^[1] ; de Moura, Arthur B. L. ^[1] ; e Silva, Felipe A. ^[1] ; Candido, Eduardo G. ^[1] ; da Silva, Anderson G. M. ^[2] ; de Oliveira, Daniela C. ^[3] ; Quiroz, Jhon ^[2] ; Camargo, Pedro H. C. ^[2] ; Bergamaschi, Vanderlei S. ^[1] ; Ferreira, Joao C. ^[1] ; Linardi, Marcelo ^[1] ; Fonseca, Fabio C. ^[1]

Afiliação do(s) autor(es)

^[1] IPEN CNEN, Inst Pesquisas Energet & Nucl, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[3] Ctr Nacl Pesquisa Energia & Mat, Lab Nacl Luz Sincrotron, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FUEL; v. 237, p. 1244-1253, FEB 1 2019.
• Citações Web of Science: 5

Resumo

We reported herein the synthesis in high yields ( > 97%) of Ce0.9Sm0.1O2-delta nanowires displaying well-defined shape, size, and composition by a simple, fast, and low-cost two-step hydrothermal method. The Ce0.9Sm0.1O2-delta nanowires synthesis was followed by the wet impregnation of Ni without the utilization of any stabilizing agent. The Ni/Ce0.9Sm0.1O2-delta nanowires showed higher surface area, high concentration of oxygen vacancies at surface, and finely dispersed Ni particles with significantly higher metallic surface area as compared with catalysts prepared from commercial materials with similar compositions. Such unique and improved properties are reflected on the catalytic performance of the Ni/Ce0.9Sm0.1O2-delta nanowires towards ethanol steam reforming. The nanowires exhibited high yields for hydrogen production (similar to 60% of selectivity) and an exceptional stability with no loss of activity after 192 h of reaction at 550 degrees C. The reported results provide insights and can inspire high-yield production of nanostructured catalysts displaying controlled and superior properties that enable practical applications in heterogeneous catalysis. (AU)

• Processo FAPESP: 14/09087-4 - Estudos sobre o uso do bioetanol em células a combustível do tipo PEMFC e SOFC
• Beneficiário: Marcelo Linardi
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• 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: 17/04929-5 - Desenvolvimento de catalisadores para obtenção de hidrogênio a partir do bioetanol
• Beneficiário: Thenner Silva Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado