Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 106: Issue 3
Kinetic study of degradation of heavy oil over MCM-41
Authors:
Edjane F. B. Silva Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, CEP 59078-970, Brazil

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Marcílio P. Ribeiro Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, CEP 59078-970, Brazil
UNP—Laureate International Univesity, Av Nascimento de Castro 1597, Natal, RN, CEP 59056-450, Brazil

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Ana C. F. Coriolano UNP—Laureate International Univesity, Av Nascimento de Castro 1597, Natal, RN, CEP 59056-450, Brazil

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Ana C. R. Melo Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, CEP 59078-970, Brazil

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Anne G. D. Santos Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, CEP 59078-970, Brazil

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Valter J. Fernandes Jr. Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, CEP 59078-970, Brazil

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Antonio S. Araujo Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, CEP 59078-970, Brazil

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Pages:
793–797
Online Publication Date:
16 Apr 2011
Publication Date:
01 Dec 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-011-1543-4
Keywords:
Heavy oil; MCM-41; Model-free kinetics; Thermogravimetry
Restricted access

Abstract

Thermogravimetry was applied in order to investigate the catalytic degradation of heavy oil (15.4oAPI) over silica-based MCM-41 mesoporous molecular sieve. This material was synthesised by the hydrothermal method, using cetyltrimethylammonium bromide as organic template. The physicochemical characterization by nitrogen adsorption, X-ray diffraction, and thermogravimetry, showed that the obtained material presents well-defined structure, with a uniform hexagonal arrangement. The thermal and catalytic degradation of heavy oil was performed by thermogravimetric measurements, in the temperature range from 30 to 900 °C, at heating rates of 5, 10, and 20 °C min−1. By using the model-free kinetics, proposed by Vyazovkin, it was determined that the activation energy to degrade the heavy oil was ca. 128 kJ mol−1, and for degradation of oil in presence of MCM-41, this value decreased to 69 kJ mol−1, indicating the performance of the mesoporores catalyst for the degradation process.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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