Partial oxidation of methane in a Zr0.84Y0.16O1.92–La0.8Sr0.2Cr0.5Fe0.5O3−δ hollow fiber membrane reactor targeting solid oxide fuel cell applications
Partial oxidation of methane in a Zr0.84Y0.16O1.92–La0.8Sr0.2Cr0.5Fe0.5O3−δ hollow fiber membrane reactor targeting solid oxide fuel cell applications
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DOI：
10.1016/j.jpowsour.2012.06.042
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发表时间：
2012-11
影响因子：
9.2
通讯作者：
Jianjun Liu;Shangquan Zhang;Wen-dong Wang;Jian-feng Gao;Wei Liu;Chusheng Chen
中科院分区：
文献类型：
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作者：
Jianjun Liu;Shangquan Zhang;Wen-dong Wang;Jian-feng Gao;Wei Liu;Chusheng Chen
膜反应器已被研究用于将甲烷转化为适合固体氧化物燃料电池（SOFC）的燃料。该反应器采用内腔侧涂有Ru催化剂的透氧Zr.84Y0.16O1.92(YSZ)–La0.8Sr0.2Cr0.5Fe0.5O3−δ(LSCF)中空纤维膜构建。该反应器在高温下进行测试，中空纤维的壳侧和内腔侧分别暴露于大气和甲烷。甲烷与渗透的氧气的反应以非常快的速度进行。在 950 °C、膜表面 14.7 cm3CH4min−1cm−2 的高甲烷进料速率和 7.9 cm3min−1cm−2 的氧气渗透速率下，甲烷通量转化率超过 90%；反应器的流出物主要由H2(53.5%)和CO(35.7%)组成，表明反应器中发生的主要反应是甲烷(POM)的部分氧化。当废水进入盘形SOFC单电池时，它表现出稳定的性能。 POM 反应的温和放热性质和中空纤维膜的高表面积与体积比可以使我们能够构建和操作用于 SOFC 应用的紧凑型自热甲烷重整器。
A membrane reactor has been investigated to reform methane into fuel suitable for solid oxide fuel cells (SOFCs). An oxygen-permeable Zr.84Y0.16O1.92(YSZ)–La0.8Sr0.2Cr0.5Fe0.5O3−δ(LSCF) hollow fiber membrane coated with Ru catalyst at the lumen side is used to construct the reactor. The reactor is tested at elevated temperatures with the shell and lumen sides of the hollow fiber exposed to the atmosphere air and methane, respectively. The reaction of methane with the permeated oxygen proceeds at a remarkably fast rate. Methane throughput conversion over 90% is attained at 950 °C at a high methane feed rate of 14.7 cm3CH4min−1cm−2membrane surface and oxygen permeation rate 7.9 cm3min−1cm−2; the effluent from the reactor is composed mainly of H2(53.5%) and CO (35.7%), revealing that the dominating reaction occurring in the reactor is partial oxidation of the methane (POM). When the effluent is fed into a disk-shaped SOFC single cell, it exhibits stable performance. The mild exothermal nature of POM reaction and the high surface to volume ratio of hollow fiber membrane may allow us to construct and operate a compact autothermal methane reformer for SOFC applications.