Tertiary recycling of polyethylene to hydrocarbon fuel by catalytic cracking over aluminum pillared clays

Manos, G; Yusof, IY; Gangas, NH; Papayannakos, N

dc.contributor.author	Manos, G	en
dc.contributor.author	Yusof, IY	en
dc.contributor.author	Gangas, NH	en
dc.contributor.author	Papayannakos, N	en
dc.date.accessioned	2014-03-01T01:18:24Z
dc.date.available	2014-03-01T01:18:24Z
dc.date.issued	2002	en
dc.identifier.issn	0887-0624	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14982
dc.subject	Catalytic Cracking	en
dc.subject	Polyethylene	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Flame ionization detectors (FID)	en
dc.subject.other	Aluminum	en
dc.subject.other	Catalytic cracking	en
dc.subject.other	Hydrocarbons	en
dc.subject.other	Macromolecules	en
dc.subject.other	Polyethylenes	en
dc.subject.other	Recycling	en
dc.subject.other	Thermogravimetric analysis	en
dc.subject.other	Liquid fuels	en
dc.title	Tertiary recycling of polyethylene to hydrocarbon fuel by catalytic cracking over aluminum pillared clays	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/ef0102364	en
heal.identifier.secondary	http://dx.doi.org/10.1021/ef0102364	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	The catalytic cracking of polyethylene over an Al pillared saponite, an Al pillared montmorillonite, and their regenerated samples was studied in a semi-batch reactor. Pillared clays were able to convert completely polyethylene in gaseous and liquid hydrocarbons, showing low coking levels. The selectivity and yield to liquid hydrocarbons were high, as the mild acidity of pillared clays avoided excessive cracking to small molecules. Regenerated catalyst samples showed practically identical levels of conversion and selectivity with fresh pillared clay samples. Furthermore, they produced hydrocarbons with practically the same distribution as the fresh samples, confirming that pillared clays can be completely regenerated. Both facts of high yield to liquid products and regenerability make pillared clays potential catalysts for an industrial process of catalytic cracking of plastic waste. The effect of the heating program on the liquid product quality and distribution is also investigated, using two different temperature programs with the same levels of temperature steps, but different duration. The boiling point distribution of the liquid products formed during the second interval of the shorter program was intermediate between this of the lighter liquid produced in the first 10 min of the longer program and the heavier liquid produced between 10 and 20 min. This result clearly shows the importance of the polymer state during each temperature stage.	en
heal.publisher	AMER CHEMICAL SOC	en
heal.journalName	Energy and Fuels	en
dc.identifier.doi	10.1021/ef0102364	en
dc.identifier.isi	ISI:000174522000028	en
dc.identifier.volume	16	en
dc.identifier.issue	2	en
dc.identifier.spage	485	en
dc.identifier.epage	489	en