公开(公告)号：US20170204525A1

公开(公告)日：2017-07-20

申请号：US15515018

申请日：2015-09-15

Applicant: BASF SE

Inventor： Eva MUTORO ,  Gunter BECHTLOFF ,  Sigmar BRAEUNINGER ,  Bernd SCHAACK

IPC: C25B9/10 ,  C01B3/50 ,  C01B3/24 ,  C25B1/02 ,  B01J7/00

CPC classification number: C25B9/10 ,  B01J7/00 ,  C01B3/24 ,  C01B3/503 ,  C01B2203/0266 ,  C01B2203/0405 ,  C01B2203/0475 ,  C01B2203/048 ,  C25B1/02

Abstract: Disclosed herein is a membrane-electrode assembly containing: a gastight, selectively proton-conducting membrane which has a retentate side having an anode and a permeate side having a cathode; a voltage source for generating a potential difference between the anode and the cathode; an anode catalyst having a catalytically active material on the retentate side; and a cathode catalyst having a catalytically active material on the permeate side, in which the cathode catalyst has a smaller amount of catalytically active material than the anode catalyst. The present disclosure also includes a reactor containing the membrane-electrode assembly, and a process for separating off hydrogen using the membrane-electrode assembly.

公开(公告)号：US20220306462A1

公开(公告)日：2022-09-29

申请号：US17771131

申请日：2020-10-15

Applicant: BASF SE

Inventor： Carsten HENSCHEL ,  Andreas FUESSL ,  Otto MACHHAMMER ,  Sigmar BRAEUNINGER

IPC: C01B3/30 ,  C01B3/50 ,  B01D53/32

Abstract: The present invention comprises a process for producing hydrogen, wherein in a first stage hydrocarbons are decomposed into solid carbon and into a hydrogen-containing gaseous product mixture, the hydrogen-containing gaseous product mixture, which has a composition in respect of the main components CH4, N2, and H2 of 20% to 95% by volume H2 and 80% to 5% by volume CH4 and/or N2, is discharged from the first stage at a temperature of 50 to 300° C., and this is supplied at a temperature differing from this exit temperature by not more than 100° C. to an electrochemical separation process and, in this second stage, the hydrogen-containing product mixture is separated in the electrochemical separation process at a temperature of 50 to 200° C. into hydrogen having a purity of >99.99% and a remaining residual gas mixture.