Hydrogen production from coke oven gas over LiNi/γ-Al2O3 catalyst modified by rare earth metal oxide in a membrane reactor |
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作者单位: | Shanghai Key Laboratory of Modern Metallurgy and Materials Processing,Shanghai University,Shanghai 200072,China |
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基金项目: | the National High Technology Research and Development Program of China,Science and Technology Commission of Shanghai Municipality,National Engineering Research Center of Advanced Steel Technology (NERCAST) |
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摘 要: |
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关 键 词: | Ni/γ-Al2O3催化剂 稀土金属氧化物 膜反应器 焦炉煤气 NiO/γ-Al2O3催化剂 改性 甲烷部分氧化 NiAl2O4 |
收稿时间: | 15 March 2009 |
Hydrogen production from coke oven gas over LiNi/r-Al2O3 catalyst modified by rare earth metal oxide in a membrane reactor |
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Authors: | Zhibin Yang Yunyan Zhang Weizhong Ding Yuwen Zhang Peijun Shen Yuding Zhou Yong Liu Shaoqing Huang Xionggang Lu |
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Institution: | Shanghai Key Laboratory of Modern Metallurgy and Materials Processing, Shanghai University, Shanghai 200072, China |
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Abstract: | The performance of LiNi/r-Al2O3 catalysts modified by rare earth metal oxide (La2O3 or CeO2) packed on BCFNO membrane reactor was
discussed for the partial oxidation of methane (POM) in coke oven gas (COG) at 875 ◦C. The NiO/r-Al2O3 catalysts with different amounts of
La2O3 and CeO2 were prepared with the same preparation method and under the same condition in order to compare the reaction performance
(oxygen permeation, CH4 conversion, H2 and CO selectivity) on the membrane reactor. The results show that the oxygen permeation flux
increased significantly with LiNiREOx/r-Al2O3 (RE = La or Ce) catalysts by adding the element of rare earth especially the Ce during the
POM in COG. Such as, the Li15wt%CeO29wt%NiO/
-Al2O3 catalyst with an oxygen permeation flux of 24.71 ml·cm−2·min−1 and a high
CH4 conversion was obtained in 875 ◦C. The resulted high oxygen permeation flux may be due to the added Ce that inhibited the strong
interaction between Ni and Al2O3 to form the NiAl2O4 phase. In addition, the introduction of Ce leads up to an important property of storing
and releasing oxygen. |
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Keywords: | rare earth metal oxide oxygen permeation membrane reactor |
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