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公开(公告)号：US11872545B2
公开(公告)日：2024-01-16
申请号：US17541474
申请日：2021-12-03
发明人： Sandor Nagy , Daniel F. White , Christopher D. Smith , David L. Ramage , Diego Brita , Noel C. Hallinan
CPC分类号： B01J29/7007 , B01J27/16 , B01J29/084 , B01J29/40 , C08J11/16 , C08J2323/06 , C08J2323/12
摘要： 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.
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公开(公告)号：US20210070958A1
公开(公告)日：2021-03-11
申请号：US17015506
申请日：2020-09-09
发明人： Diego Brita , Sheri E. Davis , Volker Fraaije , Simona Guidotti , Dario Liguori , Sandor Nagy , David L. Ramage , Shahram Mihan , Christopher D. Smith , Daniel F. White , Xueyong Yang
摘要： A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.
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公开(公告)号：US20240076467A1
公开(公告)日：2024-03-07
申请号：US18454847
申请日：2023-08-24
CPC分类号： C08J11/16 , B01J6/001 , B01J35/023 , B01J37/0036 , B01J37/04
摘要： Catalytic compositions for depolymerizing polyolefin-based waste material into useful petrochemical products and methods of use are described. The catalytic compositions are mixed metal oxides demonstrating equal or higher conversion than noncatalytic pyrolysis. These mixed metal oxide catalysts and a polyolefin-based material are heated in the presence of oxygen to form a product comprising one or more olefin monomers.
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公开(公告)号：US11319424B2
公开(公告)日：2022-05-03
申请号：US17015506
申请日：2020-09-09
发明人： Diego Brita , Sheri E. Davis , Volker Fraaije , Simona Guidotti , Dario Liguori , Sandor Nagy , David L. Ramage , Shahram Mihan , Christopher D. Smith , Daniel F. White , Xueyong Yang
摘要： A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.
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公开(公告)号：US20220112352A1
公开(公告)日：2022-04-14
申请号：US17450234
申请日：2021-10-07
IPC分类号： C08J11/20
摘要： Methods of depolymerizing polyolefin-based material into useful petrochemical products using styrene oligomers or polymers, and heat are described. The styrene oligomers or polymers improve the depolymerization reaction by decreasing the halftime for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.
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公开(公告)号：US20240228405A9
公开(公告)日：2024-07-11
申请号：US18493300
申请日：2023-10-24
发明人： Sandor Nagy , Christopher D. Smith , Daniel F. White , Diego Brita , Simona Guidotti , Dario Liguori , Francesco Menichelli , Paolo Ruzzi
CPC分类号： C07C4/22 , B01J21/16 , B01J21/18 , B01J23/02 , B01J29/40 , B01J29/7007 , C07C2529/40
摘要： Catalytic compositions and processes for depolymerizing polyolefin-based feed into useful petrochemical products are described. The compositions are a composite of a zeolite catalyst component and a co-catalyst comprising an activated clay component and/or a solid base component. These catalyst systems, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of impurities that may be present in the polyolefin-based feed. This results in a shorter residence time in the depolymerization unit and more efficient process.
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公开(公告)号：US20240132425A1
公开(公告)日：2024-04-25
申请号：US18493300
申请日：2023-10-23
发明人： Sandor Nagy , Christopher D. Smith , Daniel F. White , Diego Brita , Simona Guidotti , Dario Liguori , Francesco Menichelli , Paolo Ruzzi
CPC分类号： C07C4/22 , B01J21/16 , B01J21/18 , B01J23/02 , B01J29/40 , B01J29/7007 , C07C2529/40
摘要： Catalytic compositions and processes for depolymerizing polyolefin-based feed into useful petrochemical products are described. The compositions are a composite of a zeolite catalyst component and a co-catalyst comprising an activated clay component and/or a solid base component. These catalyst systems, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of impurities that may be present in the polyolefin-based feed. This results in a shorter residence time in the depolymerization unit and more efficient process.
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公开(公告)号：US20220135760A1
公开(公告)日：2022-05-05
申请号：US17514015
申请日：2021-10-29
IPC分类号： C08J11/16
摘要： Methods of depolymerizing polyolefin-based material into useful petrochemical products using supported metal oxides and heat are described. The supported metal oxides improve the depolymerization reaction by decreasing the half time for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.
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公开(公告)号：US20210061972A1
公开(公告)日：2021-03-04
申请号：US17001832
申请日：2020-08-25
发明人： Sandor Nagy , Christopher D. Smith , Xueyong Yang , Daniel F. White , Sheri E. Davis , Shahram Mihan , Volker Fraaije
IPC分类号： C08J11/16 , B01J27/125 , C10G1/10
摘要： A method of depolymerizing plastics using a fluorinated alumina catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.
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公开(公告)号：US11767408B2
公开(公告)日：2023-09-26
申请号：US17514015
申请日：2021-10-29
IPC分类号： C08J11/16
CPC分类号： C08J11/16 , C08J2323/04
摘要： Methods of depolymerizing polyolefin-based material into useful petrochemical products using supported metal oxides and heat are described. The supported metal oxides improve the depolymerization reaction by decreasing the half time for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.
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