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TitleFeedstock recycling of polyethylene over AlTUD mesoporous materials
Author(s)Neves, I. C.
Botelho, Gabriela
Machado, A. V.
Rebelo, P.
Ramôa, S.
Pereira, M. F. R.
Ramanathan, A.
Pescarmona, P.
KeywordsCatalytic degradation
High density polyethylene
Thermal analysis
Issue date2007
JournalPolymer Degradation and Stability
Abstract(s)The catalytic degradation of high density polyethylene (HDPE) was investigated using AlTUD-1 as catalyst, a recently discovered mesoporous aluminosilicate. The catalytic activity of AlTUD-1 was evaluated by TGA measurements, using a polymer/catalyst ratio of 9:1. AlTUD-1 has a Brønsted acidic behaviour, three-dimensional (3D) connectivities and a pore diameters between 2 and 50 nm. Compared to HY zeolite, the large pore size of AlTUD-1 enhances a selective catalytic degradation of the polymer and prevents rapid deactivation. Moreover, the apparent activation energy of polymer cracking is much lower than with HY zeolite. For these reasons, AlTUD-1 is a potentially interesting catalyst for the catalytic cracking of plastic waste into liquid fuels.
Publisher version
AccessRestricted access (UMinho)
Appears in Collections:CDQuim - Artigos (Papers)
IPC - Artigos em revistas científicas internacionais com arbitragem

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