Study of the polymer-catalyst contact effectivity and the heating rate influence on the HDPE pyrolysis

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Title: Study of the polymer-catalyst contact effectivity and the heating rate influence on the HDPE pyrolysis
Authors: Marcilla, Antonio | Hernández Férez, María del Remedio | García, Angela N.
Research Group/s: Procesado y Pirólisis de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Polyethylene | Fluidized bed reactor | Polymer-catalyst contact | Zeolite | Dry mixture | Melted blend
Knowledge Area: Ingeniería Química
Date Created: 2006
Issue Date: May-2007
Publisher: Elsevier
Citation: MARCILLA GOMIS, Antonio; HERNÁNDEZ FÉREZ, María del Remedio; GARCÍA CORTÉS, Ángela Nuria. "Study of the polymer-catalyst contact effectivity and the heating rate influence on the HDPE pyrolysis". Journal of Analytical and Applied Pyrolysis. Vol. 79, Issues 1-2 (May 2007). ISSN 0165-2370, pp. 424-432
Abstract: This paper studies the effect of two different parameters on the different fractions obtained in the catalytic pyrolysis of HDPE using HZSM-5. On one hand, the influence of the heating rate on the results obtained has been studied by selecting two totally different heating rates: flash and slow (5 ºC/min) pyrolysis. On the other hand, two different types of samples have been pyrolyzed at each heating rate: dry catalyst-polymer blend and melted blend (prepared in an extruder). The results obtained allow us to evaluate the influence of the contact effectivity between polymer and catalyst as well as the effect of the type of heating on the product distribution. In general, catalytic pyrolysis leads to higher volatiles yields than thermal degradation and the pyrolysis of a melted blend reaches always higher yields than a dry blend. It seems than a better contact between polymer and catalyst implies a more noticeable activity of the catalyst although both parameters, heating rate and polymer-catalyst contact, are interconnected and the grade of influence of the type of blend used depends, in many cases, on the heating rate of the process. A detailed quantitative analysis of the compounds generated under these different conditions has been performed.
Sponsor: The authors wish to thank CICYT PPQ2001-0733, FEDER, GV (project GRUPOS03/159), CTQ 2004-02187, and the Ministry of Education, Culture and Sport for financial support.
ISSN: 0165-2370
DOI: 10.1016/j.jaap.2006.10.017
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
Publisher version:
Appears in Collections:INV - GTP3 - Artículos de Investigación sobre Pirólisis Catalítica de Polímeros

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