Hydrogen production by water dissociation in surface-modified BaCo _xFe_yZr_1-x-yO_3-δ hollow-fiber membrane reactor with improved oxygen permeation

authored by

Heqing Jiang, Fangyi Liang, Oliver Czuprat, Konstantin Efimov, Armin Feldhoff, Steffen Schirrmeister, Thomas Schiestel, Haihui Wang, Jürgen Caro

Abstract

A porous perovskite BaCo_x,Fe_yZr _0.9-x-yPd_0.1O_3-δ (BCFZ-Pd) coating was deposited onto the outer surface of a BaCO_xFe_yZr _1-x-yO_3-δ (BCFZ) perovskite hollow-fiber membrane. The surface morphology of the modified BCFZ fiber was characterized by scanning electron microscopy (SEM), indicating the formation of a BCFZ-Pd porous layer on the outer surface of a dense BCFZ hollow-fiber membrane. The oxygen permeation flux of the BCFZ membrane with a BCFZ-Pd porous layer increased 3.5 times more than that of the blank BCFZ membrane when feeding reactive CH4 onto the permeation side of the membrane. The blank BCFZ membrane and surface-modified BCFZ membrane were used as reactors to shift the equilibrium of thermal water dissociation for hydrogen production because they allow the selective removal of the produced oxygen from the water dissociation system. It was found that the hydrogen production rate increased from 0.7 to 2.1 mLH₂min ^-1VCm^-2 at 950°C after depositing a BCFZ-Pd porous layer onto the BCFZ membrane.

Organisation(s)

Institute of Physical Chemistry and Electrochemistry

External Organisation(s)

Thyssenkrupp AG
Fraunhofer Institute for Interfacial Engineering and Biotechnology (IGB)
South China University of Technology

Type

Article

Journal

Chemistry - A European Journal

Volume

16

Pages

7898-7903

No. of pages

6

ISSN

0947-6539

Publication date

12.07.2010

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Catalysis, Organic Chemistry

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1002/chem.200902494 (Access: Closed)