公开(公告)号：US20240002228A1

公开(公告)日：2024-01-04

申请号：US18254671

申请日：2021-12-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Markus E. Hirschberg ,  Kalus Hintzer ,  Thomas W. Schoettle ,  Arne Thaler ,  Achim Schmidt-Rodenkirchen ,  Thorsten Gerdes ,  Konstantin Mierdel

IPC: C01B7/19

CPC classification number: C01B7/196 ,  C01B32/40

Abstract: Methods of converting a variety of fluorinated materials into anhydrous hydrogen fluoride are described. The methods include thermally decomposing the fluorinated materials into a gaseous effluent comprising hydrogen fluoride and carbon dioxide. This gaseous effluent is then treated with carbon at a temperature of at least 830° C., converting the carbon dioxide to carbon monoxide (CO) and producing a gaseous product comprising the hydrogen fluoride, which can be condensed to generate anhydrous hydrogen fluoride. These methods can also be used to convert water contained in the gaseous effluent into hydrogen.

公开(公告)号：US11905178B2

公开(公告)日：2024-02-20

申请号：US18254671

申请日：2021-12-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Markus E. Hirschberg ,  Klaus Hintzer ,  Thomas W. Schoettle ,  Arne Thaler ,  Achim Schmidt-Rodenkirchen ,  Thorsten Gerdes ,  Konstantin Mierdel

IPC: C01B7/19 ,  C01B32/50 ,  C01B32/40

CPC classification number: C01B7/196 ,  C01B32/40 ,  C01B32/50

Abstract: Methods of converting a variety of fluorinated materials into anhydrous hydrogen fluoride are described. The methods include thermally decomposing the fluorinated materials into a gaseous effluent comprising hydrogen fluoride and carbon dioxide. This gaseous effluent is then treated with carbon at a temperature of at least 830° C., converting the carbon dioxide to carbon monoxide (CO) and producing a gaseous product comprising the hydrogen fluoride, which can be condensed to generate anhydrous hydrogen fluoride. These methods can also be used to convert water contained in the gaseous effluent into hydrogen.

公开(公告)号：US20230002297A1

公开(公告)日：2023-01-05

申请号：US17777837

申请日：2020-12-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Arne Thaler ,  Achim Schmidt-Rodenkirchen ,  Mark W. Muggli ,  Konstantin Mierdel ,  Klaus Hintzer ,  Thorsten Gerdes ,  Denis Duchesne ,  Gregg D. Dahlke

IPC: C07C17/367

Abstract: The process produces a fluorinated olefin from a fluorinated copolymer having at least one of sulfonic acid groups, carboxylic acid groups, or salts thereof. The process includes heating the fluorinated copolymer at a first temperature not more than 450° C. to decompose at least one of the sulfonic acid groups, carboxylic acid groups, or salts thereof to form a partially pyrolyzed intermediate and subsequently heating the partially pyrolyzed intermediate at a second temperature of at least 550° C. to produce the fluorinated olefin.