Geopolymers
Inorganic polymeric new materials
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Edjane F. B. Silva
Edjane F. B. Silva
Laboratory of Catalysis and Petrochemitry, Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil
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Marcílio P. Ribeiro
Marcílio P. Ribeiro
Laboratory of Catalysis and Petrochemitry, Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil
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Luzia P. F. C. Galvão
Luzia P. F. C. Galvão
Laboratory of Catalysis and Petrochemitry, Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil
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Valter J. Fernandes
Valter J. Fernandes
Laboratory of Catalysis and Petrochemitry, Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil
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Antonio S. Araujo
Antonio S. Araujo
Laboratory of Catalysis and Petrochemitry, Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil
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Abstract
Degradation of low density polyethylene (LDPE) was studied for the pure polymer and mixed with silicoaluminophosphate SAPO-11 catalyst. SAPO-11 was synthesized by hydrothermal method using di-isoprolpylamine as structure template, and characterized by XRD and SEM. From X-ray diffraction, it was observed that SAPO-11 was obtained with high crystallinity. Using the model-free kinetics, proposed by Vyazovkin, the activation energies were determined for the process of polymer degradation. It was found that the degradation process of 90% of LDPE mixed with SAPO-11 over a period of 1 h, occurred at a temperature of 378 °C, while for the pure LDPE, the temperature was increased to 434 °C in the same period of time and conversion, indicating that SAPO-11 was an effective catalyst for the degradation of LDPE. The activation energy for the degradation of pure LDPE was equivalent to 251 kJ mol−1. Also, when the SAPO-11 was mixed with the polymer, this value was decreased to 243 kJ mol−1.
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1. Lm, ValleM, Guimarães, MJOC, Sampaio, CMS 2004 Degradação de Poliolefinas Utilizando Catalisadores Zeolíticos. Polímeros Ciência e Tecnologia 14:17–21.
-
2. Md Azhar, U, Kazuo, K, Katsuhide, M, Yusaku, S 1997 Thermal and catalytic degradation of structurally different types of polyethylene into fuel oil. Polym Degrad Stab 56:37–44 .
-
3. Predel, M, Kaminsky, W 2000 Pyrolysis of mixed polyolefins in a fluidised-bed reactor and on a pyro-GC/MS to yield aliphatic waxes. Polym Degrad Stab 70:373–385 .
-
4. Polli H , Pontes LAM, Araujo AS. Application of model-free kinetics to the study of thermal degradation of polycarbonate. J Therm Anal Calorim. 2005;79: 383–7.
-
5. Polli, H, Pontes, LAM, Araujo, AS, Barros, JMF, Fernandes, VJ 2009 Degradation behavior and kinetic study of ABS polymer. J Therm Anal Calorim 95:131–134 .
-
6. Marcilla, A, Gómez, A, Reyes-Labarta, JA, Giner, A 2003 Catalytic pyrolysis of polypropylene using MCM-41: kinetic model. Polym Degrad Stab 80:233–240 .
-
7. Aguado, J, Serrano, DP, Miguel, GS, Escola, JM, Rodríguez, JM 2007 Catalytic activity of zeolitic and mesostructured catalysts in the cracking of pure and waste polyolefins. J Anal Appl Pyrolysis 78:153–161 .
-
8. Dang, TTH, Zubowa, HL, Bentrup, U, Richter, M, Martin, A 2009 Microwave-assisted synthesis and characterization of Cu-containing AlPO4–5 and SAPO-5. Microporous Mesoporous Mater 123:209–220 .
-
9. Sinfronio, FSM, Souza, AG, Santos, IMG, Fernandes, VJ, Novak, C, Ehen, Z 2006 Influence of H-ZSM-5, Al-MCM-41 and acid hybrid ZSM-5/MCM-41 on polyethylene decomposition. J Therm Anal Calorim 85:391–399 .
-
10. Fernandes, GJT, Fernandes, VJ, Araujo, AS 2002 Catalytic degradation of polyethylene over SAPO-37 molecular sieve. Catal Today 75:233–238 .
-
11. Fernandes, VJ, Araujo, AS, Fernandes, GJT, Matos, JR, Ionashiro, M 2001 Kinetic parameters of polymer degradation by SAPO-37. J Therm Anal Calorim 64:585–589 .
-
12. Fernandes, VJ, Araujo, AS, Medeiros, RA, Matos, JR, Mercuri, LP, Silva, AO, Melo, DMA 1999 Kinetic parameters of polyethylene degradation by the natural zeolite chabazite. J Therm Anal Calorim 56:1279–1282 .
-
13. Sinfronio, FSM, Santos, JCO, Pereira, LG, Souza, AG, Conceicao, MM, Fernandes, VJ, Fonseca, VM 2005 Kinetic of thermal degradation of low-density and high-density polyethylene by non-isothermal thermogravimetry. J Therm Anal Calorim 79:393–399 .
-
14. Vyazovkin, S, Goryachko, V 1992 Potentialities of software for kinetic processing of thermoanalytical data by the isoconversion method. Thermochimica Acta 194:221–230 .
-
15. Banghao, C, Yining, H 2009 Dry gel conversion synthesis of SAPO- and CoAPO-based molecular sieves by using structurally related preformed AlPO precursors as the starting materials. Microporous Mesoporous Mater 123:71–77 .
-
16. Ping, L, Jie, R, Yuhan, S 2008 Influence of template on Si distribution of SAPO-11 and their performance for n-paraffin isomerization. Microporous Mesoporous Mater 114:365–372 .
-
17. Ping, L, Jie, R, Yuhan, S 2008 Synthesis, characterization and catalytic properties of SAPO-11 with high silicon dispersion. Catal Commun 9:1804–1809 .
-
18. Sinha, AK, Seelan, S 2004 Characterization of SAPO-11 and SAPO-31 synthesized from aqueous and non-aqueous media. Appl Catal A Gen 270:245–252 .
-
19. Gharibeh, M, Tompsett, GA, Yngvesson, KS, Conner, WC 2009 Microwave synthesis of zeolites: effect of power delivery. J Phys Chem B 113:8930–8940 .
-
20. Araújo, AS, Fernandes, VJ, Fernandes, GJT 2002 Thermogravimetric kinetics ofpolyethelyne degredation over silicoalumino phosphate. Thermochim Acta 392:55–61 .
-
21. Pacheco, JGA, Graciliano, EC, Silva, AOS, Souza, MJB, Araujo, AS 2005 Thermo gravimetric kinetics of polypropylene degradation on ZSM-12 and ZSM-5 catalysts. Catal Today 107:507–512 .
-
22. Fernandes, VJ, Araújo, AS, Fonseca, VM, Fernandes, NS, Silva, DR 2002 Thermogravimetric evaluation of polyester/sisal flame retarded composite. Thermochim Acta 392:71–77 .
-
23. Vyazovkin, S 2006 Model-free kinetics—Staying free of multiplying entities without necessity. J Therm Anal Calorim 83:45–51 .
-
24. Vyazovkin, S, Dranca, I, Fan, X, Advincula, R 2004 Kinetics of the thermal and thermo-oxidative degradation of a polystyrene—clay nanocomposite. Macromol Rapid Commun 25:498–503 .
-
25. Peterson, JD, Vyazovkin, S, Wight, CA 2001 Kinetics of the thermal and thermo- oxidative degradation of polystyrene, polyethylene and poly(propylene). Macromol Chem Phys 202:775–784 .
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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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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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