TY - JOUR

T1 - Stable Ce0.8Gd0.2O2-δ oxygen transport membrane reactor for hydrogen production

AU - Liang, Wenyuan

AU - Kaiser, Andreas

AU - Feldhoff, Armin

AU - Baumann, Stefan

AU - Meulenberg, Wilhelm A.

AU - Hu, Tianmiao

AU - Xue, Jian

AU - Jiang, Heqing

AU - Cao, Zhengwen

AU - Caro, Jürgen

N1 - Funding Information: We kindly thank the European Commission through the FP7 NASA-OTM project (grant agreement no. 228701 ) for financial support. We also thank National Natural Science Foundation of China ( 22008250 , 22108286 ), the Innovation Funds of Shandong Energy Institute ( SEI I202146 ).

PY - 2023/1/25

Y1 - 2023/1/25

N2 - Hydrogen production using oxygen transport membrane reactors has attracted widespread attention. However, the structural stability of membrane materials under harsh reducing atmospheres is still a significant challenge. Gadolinium doped cerium oxide (CGO) presents high ionic conductivity and good reducing resistance but is limited by its poor electronic conductivity. Herein, a 2 mol.% cobalt-doped Ce0.8Gd0.2O2-δ (CoCGO) ultrathin membrane was manufactured by thin-film technology and applied to hydrogen production from water splitting (WS) with simultaneous syngas production through partial oxidation of methane (POM). Two catalysts, La0.4Sr0.6CoO3-δ (LSC) and Ni/Al2O3, were utilized for promoting WS and POM, respectively. Hydrogen production rate above 1.8 mL min-1 cm-2 and methane conversion of around 80 % were achieved, and no noticeable degradation was detected during 100 h operation, suggesting its prospective stability advantages as a membrane reactor for hydrogen production from water.

AB - Hydrogen production using oxygen transport membrane reactors has attracted widespread attention. However, the structural stability of membrane materials under harsh reducing atmospheres is still a significant challenge. Gadolinium doped cerium oxide (CGO) presents high ionic conductivity and good reducing resistance but is limited by its poor electronic conductivity. Herein, a 2 mol.% cobalt-doped Ce0.8Gd0.2O2-δ (CoCGO) ultrathin membrane was manufactured by thin-film technology and applied to hydrogen production from water splitting (WS) with simultaneous syngas production through partial oxidation of methane (POM). Two catalysts, La0.4Sr0.6CoO3-δ (LSC) and Ni/Al2O3, were utilized for promoting WS and POM, respectively. Hydrogen production rate above 1.8 mL min-1 cm-2 and methane conversion of around 80 % were achieved, and no noticeable degradation was detected during 100 h operation, suggesting its prospective stability advantages as a membrane reactor for hydrogen production from water.

KW - Hydrogen production

KW - Oxygen transport membrane

KW - Partial oxidation of methane

KW - Stability

UR - http://www.scopus.com/inward/record.url?scp=85149803571&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2022.118980

DO - 10.1016/j.apcata.2022.118980

M3 - Article

AN - SCOPUS:85149803571

VL - 650

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

M1 - 118980

ER -