SciELO - Scientific Electronic Library Online

 
vol.39 número2Analytical/numerical solution for confined jet diffusion flame (sandia flame c)Surface intermediate species of the 4-isobutylacetophenone adsorption-reaction over fosfotungstic Wells-Dawson heteropoly acid índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Bookmark


Latin American applied research

versión impresa ISSN 0327-0793

Resumen

DE CELIS, J.P.; VILLAVERDE, M.S.; CUKIERMAN, A.L.  y  AMADEO, N.E.. Oxidative dehydrogenation of ethylbenzene to styrene on activated carbons derived from a native wood as catalyst. Lat. Am. appl. res. [online]. 2009, vol.39, n.2, pp. 165-171. ISSN 0327-0793.

Activated carbons were developed by phosphoric acid activation of a native wood (Prosopis ruscifolia) under a self-generated atmosphere or flowing air. Their potentiality as catalyst for oxidative dehydrogenation of ethylbenzene to styrene was examined at pre-established operating conditions. The carbons developed in the self-generated atmosphere showed specific surface area of 2281 m2/g and total pore volume of 1.7 cm3/g, whereas values of 1638 m2/g and 1.3 cm3/g, respectively, characterized those obtained in air. A commercial activated carbon (1200 m2/g and 0.7 cm3/g) was also used for comparison. Both wood-derived carbons resulted potentially suitable as catalyst for ethylbenzene oxidative dehydrogenation. Nevertheless, those developed in the self-generated atmosphere showed a better catalytic performance than the carbons obtained in air and the commercial sample. The behaviour could be due to its lower microporosity compared with the commercial sample, and to the formation of oxidative condensation products during the oxidative dehydrogenation of ethylbenzene with greater content of carbonyl groups than for the sample activated under flowing air. Chemical and textural characterization of the used carbons conclusively evidenced the presence of oxidative condensation products pointing to formation of new active surfaces.

Palabras llave : Ethylbenzene; Styrene; Oxidative Dehydrogenation; Activated Carbons; Catalyst.

        · texto en Inglés     · pdf en Inglés