Oxygen permeation and oxidative coupling of methane with NiFe2O4-Gd0.1Ce0.9O2-δ composite membrane

被引:1
作者
Lee, Yeong A. [1 ,2 ]
Yu, Ji Haeng [1 ]
Yoon, Hana [1 ]
Cho, Dong-Woo [1 ]
Lee, Kyubock [2 ]
Yoo, Chung-Yul [3 ]
机构
[1] Korea Inst Energy Res, 152 Gajeong Ro, Daejeon 34129, South Korea
[2] Chungnam Natl Univ, Grad Sch Energy Sci & Technol GEST, 99 Daehak Ro, Daejeon 34134, South Korea
[3] Mokpo Natl Univ, Dept Chem, Muan Gun 58554, Jeollanam Do, South Korea
基金
新加坡国家研究基金会;
关键词
Composite; Fluorites; Spinels; Oxygen permeation; Oxidative coupling of methane;
D O I
10.1007/s11581-021-03926-0
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Oxygen permeability and oxidative coupling of methane (OCM) characteristics of a 30 vol.% NiFe2O4-70 vol.% Gd0.1Ce0.9O2-delta (NFO-GDC) composite membrane were systematically investigated by varying operational conditions for oxygen permeation and OCM experiments. The NFO-GDC membrane showed the maximum oxygen permeation flux of 2.24 mL center dot cm(-2)center dot min(-1) under an Air/He gradient at 900 degrees C, and flux increased with increasing oxygen partial pressure gradient in the order He < CH4 < H-2. The maximum OCM yield and C2H4/C2H6 ratio were observed at 900 degrees C and for CH4 flowing at 12.5 mL center dot min(-1), respectively, and the yield and ratio both increased with increasing temperature in the range 700-900 degrees C. The overall coupling yield was notably enhanced by applying a Mn/Na2WO4/SiO2 catalyst to the permeate side of the composite membrane. The NFO-GDC membrane with the Mn/Na2WO4/SiO2 catalyst exhibited the maximum yield and a C2H4/C2H6 ratio of 8.6% and 3.21, respectively.
引用
收藏
页码:1667 / 1675
页数:9
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