公开(公告)号：WO2022122596A1

公开(公告)日：2022-06-16

申请号：PCT/EP2021/084260

申请日：2021-12-03

Applicant: BASELL POLIOLEFINE ITALIA S.R.L. [IT]/[IT]

Inventor： NAGY, Sandor ,  WHITE, Daniel F. ,  SMITH, Christopher D. ,  RAMAGE, David L. ,  BRITA, Diego ,  HALLINAN, Noel C.

Abstract: Catalytic compositions for depolymerizing polyolefin-based waste material into useful petrochemical products and methods of use are described. The compositions are a composite of at least one zeolite catalyst with one or more co-catalyst(s) that is a solid inorganic material. These composite catalysts, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of non-polyolefin polymers that may be present. This results in a shorter residence time in the depolymerization unit and more efficient process.