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Abstract:

The accessibility in aluminas considered to be representative of matrices used in FCC resid catalysts, with mean pore sizes between 64 and 201 Å, was characterized through a kinetic approach by means of the conversion of 1,3,5-tri-isopropylbenzene (TIPB) at 500 °C in a CREC Riser Simulator fluidized bed laboratory reactor. The product distribution was essentially the same as that observed on an equilibrium commercial FCC catalyst, but the activity of the aluminas was much lower. The main products (propylene, benzene, isopropylbenzene, di-isopropylbenzenes) showed that a series cracking mechanism prevailed in the conversion of TIPB. The apparent first order kinetic constants assessed and the conversion profiles allowed establishing a ranking of activities that could be associated directly to accessibilities and not to the number of acid sites (Lewis nature), which was proportional to the specific surface area of the alumina. The sequence of accessibilities followed the same trend as the mean pore size of the aluminas. © 2006 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Accessibility in alumina matrices of FCC catalysts
Autor:Falco, M.; Morgado, E.; Amadeo, N.; Sedran, U.
Filiación:Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE), FIQ, UNL-CONICET, Santiago del Estero 2654, 3000 Santa Fe, Argentina
Centro de Pesquisas e Desenvolvimento Leopoldo A.M. Mello, PETROBRAS (CENPES/TFCC), Cidade Universitária, Q.7, Rio de Janeiro 21949-900, Brazil
Departamento de Ingeniería Química (FI, UBA), Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Accessibility; Alumina; Catalytic cracking; Matrix; Resid; Alumina; Catalytic cracking; Fluidized beds; Matrix algebra; Pore size; Reaction kinetics; Accessibility; Alumina matrices; Cracking mechanisms; Kinetic constants; Catalysts
Año:2006
Volumen:315
Página de inicio:29
Página de fin:34
DOI: http://dx.doi.org/10.1016/j.apcata.2006.08.028
Título revista:Applied Catalysis A: General
Título revista abreviado:Appl Catal A Gen
ISSN:0926860X
CODEN:ACAGE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0926860X_v315_n_p29_Falco

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Citas:

---------- APA ----------
Falco, M., Morgado, E., Amadeo, N. & Sedran, U. (2006) . Accessibility in alumina matrices of FCC catalysts. Applied Catalysis A: General, 315, 29-34.
http://dx.doi.org/10.1016/j.apcata.2006.08.028
---------- CHICAGO ----------
Falco, M., Morgado, E., Amadeo, N., Sedran, U. "Accessibility in alumina matrices of FCC catalysts" . Applied Catalysis A: General 315 (2006) : 29-34.
http://dx.doi.org/10.1016/j.apcata.2006.08.028
---------- MLA ----------
Falco, M., Morgado, E., Amadeo, N., Sedran, U. "Accessibility in alumina matrices of FCC catalysts" . Applied Catalysis A: General, vol. 315, 2006, pp. 29-34.
http://dx.doi.org/10.1016/j.apcata.2006.08.028
---------- VANCOUVER ----------
Falco, M., Morgado, E., Amadeo, N., Sedran, U. Accessibility in alumina matrices of FCC catalysts. Appl Catal A Gen. 2006;315:29-34.
http://dx.doi.org/10.1016/j.apcata.2006.08.028