K- and Cu-doped CaTiO3-based nanostructured hollow spheres as alternative catalysts to produce fatty acid ethyl esters as potential biodiesel

Autor(es)

Lanfredi, S. ^[1] ; Matos, J. ^[2] ; da Silva, S. R. ^[1] ; Djurado, E. ^{[3, 4]} ; Sadouki, A. S. ^[5] ; Chouaih, A. ^[5] ; Poon, P. S. ^[6] ; Gonzalez, E. R. P. ^[1] ; Nobre, M. A. L. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Sch Technol & Sci, BR-19060900 Presidente Prudente, SP - Brazil

^[2] Univ Autonoma Chile, Fac Ingn, Inst Ciencias Quim Aplicadas, Santiago 8900000 - Chile

^[3] LEPMI, CNRS, F-38000 Grenoble - France

^[4] Univ Grenoble Alpes, LEPMI, 1130 Rue Piscine, F-38402 St Martin Dheres - France

^[5] Abdelhamid Ibn Badis Univ, Fac Sci & Technol, Lab Technol & Solid Properties LTPS, Mostaganem 27000 - Algeria

^[6] Univ Concepcion, Unidad Desarrollo Tecnol UDT, Barrio Univ S-N, Concepcion - Chile

• Tipo de documento: Artigo Científico
• Fonte: APPLIED CATALYSIS B-ENVIRONMENTAL; v. 272, SEP 5 2020.
• Citações Web of Science: 0

Resumo

New functional polycation oxide-type catalysts were synthesized by the ultrasonic spray-pyrolysis method. The catalytic activity in the production of fatty acid ethyl esters (FAEE's) using soybean oil was studied. Catalysts are conformed by nanostructured hollow spheres of low density with a stoichiometric formula Ca1-xKxTiCux/2O3. The influence of the substitutional ratio (x) upon the catalytic activity was verified. The Ca1-xKxTiCux/2O3 sample with x = 0.3 showed the highest activity with a yield up to 89 % to produce fatty acid ethyl esters (FAEE's) after 24 h reaction using 15 wt.% catalysts, 120 degrees C and 40 bars. The enhancement in the activity was ascribed to the substitution of the Ca+2 sites by K+ and Ti+4 by Cu+2 and to the hollow morphology favoring a more effective interaction between the soybean oil and the active basic sites of the catalysts. (AU)

• Processo FAPESP: 07/03510-9 - Caracterização estrutural de nanopós de óxidos semicondutores ferroelétricos
• Beneficiário: Silvania Lanfredi
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 02/05997-9 - Cerâmicas e filmes dielétricos de óxidos semicondutores ferroelétricos nanoestruturados da família tetragonal tungstênio bronze: processamento, caracterização e propriedades
• Beneficiário: Marcos Augusto de Lima Nobre
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores
• Processo FAPESP: 14/11189-0 - Desempenho catalítico em função da nanoestruturação de novos catalisadores óxidos a partir do método de spray pirólise
• Beneficiário: Silvania Lanfredi
• Modalidade de apoio: Auxílio à Pesquisa - Regular