Accessibility in alumina matrices of FCC catalysts

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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...

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Autores principales: Falco, M., Morgado, E., Amadeo, N., Sedran, U.
Formato: JOUR
Materias:
Accessibility
Alumina
Catalytic cracking
Matrix
Resid
Fluidized beds
Matrix algebra
Pore size
Reaction kinetics
Alumina matrices
Cracking mechanisms
Kinetic constants
Catalysts
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0926860X_v315_n_p29_Falco
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0926860X_v315_n_p29_Falco
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spelling todo:paper_0926860X_v315_n_p29_Falco2023-10-03T15:46:44Z Accessibility in alumina matrices of FCC catalysts Falco, M. Morgado, E. Amadeo, N. Sedran, U. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0926860X_v315_n_p29_Falco
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
Falco, M.
Morgado, E.
Amadeo, N.
Sedran, U.
Accessibility in alumina matrices of FCC catalysts
topic_facet 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
description 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.
format JOUR
author Falco, M.
Morgado, E.
Amadeo, N.
Sedran, U.
author_facet Falco, M.
Morgado, E.
Amadeo, N.
Sedran, U.
author_sort Falco, M.
title Accessibility in alumina matrices of FCC catalysts
title_short Accessibility in alumina matrices of FCC catalysts
title_full Accessibility in alumina matrices of FCC catalysts
title_fullStr Accessibility in alumina matrices of FCC catalysts
title_full_unstemmed Accessibility in alumina matrices of FCC catalysts
title_sort accessibility in alumina matrices of fcc catalysts
url http://hdl.handle.net/20.500.12110/paper_0926860X_v315_n_p29_Falco
work_keys_str_mv AT falcom accessibilityinaluminamatricesoffcccatalysts
AT morgadoe accessibilityinaluminamatricesoffcccatalysts
AT amadeon accessibilityinaluminamatricesoffcccatalysts
AT sedranu accessibilityinaluminamatricesoffcccatalysts
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