Free-standing NiO–MgO nanosheets in-situ controllably composited on Ni-foam as monolithic catalyst for catalytic oxy-methane reforming

Free-standing NiO–MgO nanosheets in-situ controllably composited on Ni-foam as monolithic catalyst for catalytic oxy-methane reforming
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独立式 NiO-MgO 纳米片原位可控复合在泡沫镍上作为催化氧气甲烷重整的整体催化剂

DOI:
10.1016/j.matlet.2016.02.116
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发表时间:
2016-05
期刊:
影响因子:
3
通讯作者:
Yong Lu
Yong Lu
中科院分区:
材料科学3区
文献类型:
--
作者:
Ruijuan Chai;Yakun Li;Qiaofei Zhang;Guofeng Zhao;Ye Liu;Yong Lu

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通过水热条件下原位生长在泡沫镍载体上,然后进行焙烧处理,制备了用于催化甲烷氧重整(COMR)的NiO-MgO复合纳米片状催化剂。其中,由1.0%的氧化镁、18.7%的氧化镍和泡沫镍组成的泡沫镍催化剂是从纳米尺度到宏观尺度的最佳结构催化剂,在700℃,甲烷/氧气=2/1(体积/体积)的条件下,甲烷转化为合成气的选择性为94.7%,CO的选择性为89.9%,气体的每小时空速可达100%L−1h−1,但其抗碳性和织构稳定性的改善尤为理想。
Free-standing NiO–MgO composite nanosheet catalysts to be used for catalytic oxy-methane reforming (COMR) have been developed by in-situ growing onto the Ni-foam struts under hydrothermal condition followed by calcination treatment. Among them, the NiO–MgO/Ni-foam consisting of 1.0% MgO, 18.7% NiO and nickel-foam-strut balance is the best structured catalyst engineered from nano- to macro-scale, being capable of converting 82.9% CH4into syngas at selectivity of 94.7% to H2and of 89.9% to CO for a feed of CH4/O2=2/1 (vol/vol), at 700 °C and a high gas hourly space velocity of 100 L g−1h−1. Nevertheless, improvement of their carbon resistance and textural stability is particularly desirable.
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