SciELO - Scientific Electronic Library Online

 
vol.38 número146First record of Munidopsis cubensis Chace, 1942 (Crustacea: Anomura: Munidopsidae) for the Southern Caribbean Sea, ColombiaSolvatación preferencial de algunas sulfonamidas en mezclas cosolventes 1,4-dioxano + agua a 298,15 K según el método de las integrales inversas de Kirkwood-Buff índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales

versão impressa ISSN 0370-3908

Resumo

LOPEZ, Mónica; FORGIONNY, Angélica; LOPEZ, Diana  e  MORENO, Andrés. Mixed oxides of the type Cox Oy/ MgO-Al2O3 and their promotion with ruthenium as catalysts for the Fischer Tropsch synthesis. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2014, vol.38, n.146, pp.93-103. ISSN 0370-3908.

In this work we evaluated the effect of the preparation method (auto-combustion vs impregnation), and of ruthenium as promoter (0.3 wt% Ru) for cobalt-based catalysts (10 wt% Co) supported on MgO-Al2 O3 mixed oxides on the Fischer-Tropsch synthesis (FTS). Cobalt supported on MgO and Al2 O3 were used as reference catalysts for the mixed oxides. The activity of the catalysts for the FTS was evaluated in a fixed-bed reactor at 260°C and atmospheric pressure. According to the results and independently from the preparation method,cobalt supported on MgO-Al2 O3 mixed oxides were more selective to heavy hydrocarbons (C5+) than catalysts supported on single (MgO or Al2 O3) oxides. Furthermore, all Ru-promoted catalysts were more active (i.e., had higher conversion) than non-promoted catalysts, and the selectivity to hydrocarbon fractions in the range of gasoline (C11 - C12) and diesel (C21 - C23) increased. In general, the results suggest that Ru-promoted Co/MgO-Al2 O3 catalyst is a promising catalytic system for the FTS.

Palavras-chave : Fischer-Tropsch synthesis; mixed oxides; hydrotalcites.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )