Catalysts synthesized by selective deposition of Fe onto Pt for the water-gas shift reaction

Autor(es)

Aragao, Isaias Barbosa ^{[1, 2]} ; Ro, Insoo ^[2] ; Liu, Yifei ^[2] ; Ball, Madelyn ^[2] ; Huber, George W. ^[2] ; Zanchet, Daniela ^[1] ; Dumesic, James A. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Cwnpinas UNICAMP, Inst Chem, POB 6154, BR-13083970 Campinas, SP - Brazil

^[2] Univ Wisconsin, Dept Chem & Biol Engn, 1415 Engn Dr, Madison, WI 53706 - USA

• Tipo de documento: Artigo Científico
• Fonte: APPLIED CATALYSIS B-ENVIRONMENTAL; v. 222, p. 182-190, MAR 2018.
• Citações Web of Science: 10

Resumo

FePt bimetallic catalysts with intimate contact between the two metals were synthesized by controlled surface reactions (CSR) of (cyclohexadiene)iron tricarbonyl with hydrogen-treated supported Pt nanoparticles. Adsorption of the iron precursor on a Pt/SiO2 catalyst was studied, showing that the Fe loading could be increased by performing multiple CSR cycles, and the efficiency of this process was linked to the renewal of adsorption sites by a reducing pretreatment. The catalytic activity of these bimetallic catalysts for the water gas shift reaction was improved due to promotion by iron, likely linked to H2O activation on FeOx species at or near the Pt surface, mostly in the (II) oxidation state. (AU)

• Processo FAPESP: 14/21988-7 - Precursores organometálicos carbonil na síntese de catalisadores suportados: estudos in situ e aplicação na produção de hidrogênio
• Beneficiário: Isaias Barbosa Aragão
• Linha de fomento: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/23900-2 - Avaliação de materiais alternativos abundantes como próxima geração de catalisadores para conversão de biomassa lignocelulósica
• Beneficiário: Daniela Zanchet
• Linha de fomento: Bolsas no Exterior - Pesquisa
• Processo FAPESP: 15/20477-1 - Síntese de catalisadores bimetálicos monodispersos: complexos organometálicos depositados em clusters de platina
• Beneficiário: Isaias Barbosa Aragão
• Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado