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Zeolite Supported Pt for Depolymerization of Polyethylene by Induction Heating.

ABSTRACT: We demonstrate that for polyethylene depolymerization with induction heating (IH), using a bifunctional (Pt- or Pt-Sn-containing zeolite) hydrocracking catalyst, we can obtain high hydrocarbon product yields (up to 95 wt % in 2 h) at a relatively low surface temperature (375 °C) and with a tunable product distribution ranging from light gas products to gasoline- to diesel-range hydrocarbons. Four zeolite types [MFI, LTL, CHA(SSZ-13), and TON] were chosen as the supports due to their varying pore sizes and structures. These depolymerization results are obtained at atmospheric pressure and without the use of H₂ and result in an alkane/alkene mixture with virtually no methane, aromatics, or coke formation. We also demonstrate how IH helps overcome diffusional resistances associated with conventional thermal heating and thereby shortens reaction times.

SUBMITTER: Whajah B

PROVIDER: S-EPMC10251740 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature

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Zeolite Supported Pt for Depolymerization of Polyethylene by Induction Heating.

Whajah Bernard B Heil Joseph N JN Roman Cameron L CL Dorman James A JA Dooley Kerry M KM

Industrial & engineering chemistry research 20230524 22

We demonstrate that for polyethylene depolymerization with induction heating (IH), using a bifunctional (Pt- or Pt-Sn-containing zeolite) hydrocracking catalyst, we can obtain high hydrocarbon product yields (up to 95 wt % in 2 h) at a relatively low surface temperature (375 °C) and with a tunable product distribution ranging from light gas products to gasoline- to diesel-range hydrocarbons. Four zeolite types [MFI, LTL, CHA(SSZ-13), and TON] were chosen as the supports due to their varying pore ...[more]

PMID: 37304911

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