Journal
POLYMER DEGRADATION AND STABILITY
Volume 93, Issue 7, Pages 1284-1289Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2008.04.009
Keywords
catalytic degradation; spent FCC catalyst; reaction time; proportion of HDPE and PS; composition of aromatic products
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Funding
- Korea Institute of Industrial Technology(KITECH) [2006-N-WA02-P-05] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this chemical recycling process, spent FCC catalyst used had an advantage with an economical and environment aspect, such as a low catalyst price in liquid-phase reaction and a reuse of waste catalyst. The characteristics of oil product and its aromatic product distribution, as a function of reaction time in the reactor and also proportion of HDPE and PS in the mixture, were compared. Main products obtained were light hydrocarbons within the gasoline range that were mainly produced during initial reaction time. The formation of aromatic products such as styrene and ethylbenzene as major components depended appreciably on the reaction time, as well as the composition of HDPE and PS in the mixture used for degradation. For the distribution of C-9-C-12 alkylaromatic components as by-products, methylstyrene (C-1-styrene) and isopropylbenzene (C-3-benzene) components were the main products formed by beta-scission and hydrogen transfer of PS, while the rest of alkylaromatic products showed very low fraction being 1% or less. (C) 2008 Elsevier Ltd. All rights reserved.
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