Catalytic degradation of polyethylene over mesoporous molecular sieve MCM-41 modified with heteropoly compounds

• Autorzy: Gaca P , Drzewiecka M. , Kaleta W. , Kozubek H. , Nowinska K.
• Języki publikacji: EN

Abstrakty

EN

Degradation of polyethylene was performed over MCM-41 molecular sieves modified with heteropoly acid H₃PW₁₂O₄₀ (HPW) and its caesium salt CsHPW₁₂O₄₀ (CsHPW). High silica zeolite ZSM-5 has also been used as degradation catalyst. The applied catalysts (HPW/MCM-41, CsHPW/MCM-41 and ZSM-5 zeolite) resulted in lowering of temperature of HDPE degradation when compared to the thermal pyrolysis as well as influenced the distribution of the products formed as a result of the cracking process. HPW/ MCM-41 use resulted in low amount of gas products and almost 80 wt.% of liquids while cracking over HZSM-5 produced gas hydrocarbons with selectivity about 50 wt.%. Liquid product obtained in the presence of HPW/MCM-41 comprised aliphatic hydrocarbons (olefins and paraffins) while cracking carried out over ZSM-5 zeolite resulted mainly in the formation of aromatic compounds.

Słowa kluczowe

EN

thermal degradation; catalytic degradation; polyethylene; mesoporous molecular sieve; zeolite; aromatic compound; waste polymer; waste material utilization

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2008
• Tom: 17
• Numer: 1
• Opis fizyczny: p.25-31,fig.,ref.

Twórcy

autor

Gaca P

• A.Mickiewicz University, Grunwaldzka 6, 60-680 Poznan, Poland

autor

Drzewiecka M.

autor

Kaleta W.

autor

Kozubek H.

autor

Nowinska K.

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