Catalytic degradation of waste polyolefinic polymers using spent FCC catalyst with various experimental variables View Full Text


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Article Info

DATE

2003-01

AUTHORS

Kyong-Hwan Lee, Dae-Hyun Shin

ABSTRACT

Liquid-phase catalytic degradation of waste polyolefinic polymers (HDPE, LDPE, PP) over spent fluid catalytic cracking (FCC) catalyst was carried out at atmospheric pressure with a stirred semi-batch operation. The effect of experimental variables, such as catalyst amount, reaction temperature, plastic types and weight ratio of mixed plastic on the yield and accumulative amount distribution of liquid product for catalytic degradation was investigated. The initial rate of catalytic degradation of waste HDPE was linearly increased with catalyst amount (4-12 wt%), while that was exponentially increased with reaction temperature (350-430 ‡C). Spent FCC catalyst in the liquid-phase catalytic degradation of polymer was not deactivated fast. The product distribution from catalytic degradation using spent FCC catalyst strongly depended on the plastic type. The catalytic degradation of mixed plastic (HDPE: LDPE: PP: PS=3: 2: 3: 1) showed lower degradation temperature by about 20 ‡C than that of pure HDPE. More... »

PAGES

89-92

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02697190

DOI

http://dx.doi.org/10.1007/bf02697190

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1049248667


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