Performance of Acidic MCM-Like Aluminosilicate Catalysts in Pyrolysis of Polypropylene

Date

2009-01-01

Author

Obali, Zeynep
Sezgi, Naime Aslı
Doğu, Timur

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Mesoporous aluminosilicate catalysts having different Al/Si ratios were synthesized following a hydrothermal synthesis route and using different aluminum sources, such as aluminum nitrate and aluminum isopropoxide. These mesoporous materials have high surface areas, in the range of 520-1001 m(2)/g, and exhibit Type IV nitrogen adsorption isotherms. EDS and Al-27 MAS NMR results showed that aluminum was incorporated more effectively into the structure of the catalyst forming a tetrahedral framework when aluminum nitrate was used as the aluminum source. The activities of these catalysts in the polypropylene pyrolysis reaction were tested in a TGA apparatus. Results showed a marked reduction in the degradation temperature in the presence of aluminosilicate catalysts. The activation energy of degradation was 172 kJ/mole without any catalyst. However, using the mesoporous aluminosilicate catalysts synthesized by using aluminum nitrate as the aluminum source, activation energy of the degradation reaction decreased to values of about 24-28 kJ/mole.

Subject Keywords

Aluminosilicate, Catalytic degradation, Mesoporous catalyst, Polypropylene

URI

https://hdl.handle.net/11511/30305

Journal

CHEMICAL ENGINEERING COMMUNICATIONS

DOI

https://doi.org/10.1080/00986440802301537

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

Z. Obali, N. A. Sezgi, and T. Doğu, “Performance of Acidic MCM-Like Aluminosilicate Catalysts in Pyrolysis of Polypropylene,” CHEMICAL ENGINEERING COMMUNICATIONS, pp. 116–130, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30305.