Microfibrous structured Au/Co3O4/Al-fiber catalyst for the combustion of ethylene traces

Microfibrous structured Au/Co3O4/Al-fiber catalyst for the combustion of ethylene traces
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用于微量乙烯燃烧的微纤维结构 Au/Co3O4/Al 纤维催化剂

DOI:
10.1016/j.catcom.2020.106133
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发表时间:
2020-11
影响因子:
3.7
通讯作者:
Li Yakun
Li Yakun
中科院分区:
化学3区
文献类型:
--
作者:
Zhang Qiaofei;Zhu Chunshan;Gao Jianfei;Wang Liucheng;Zhao Dantong;Hei Yangyang;Li Yakun

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采用水热法将Co(OH)2纳米阵列制备在Al纤维薄片上,然后采用溶剂辅助等湿浸渍法制备Au纳米粒子,制备了用于乙烯燃烧的Au/Co 3 O 4/Al纤维催化剂。在相同的燃烧反应条件下,不同形貌的Co(OH)2/Al纤维纳米阵列负载的催化剂表现出不同的C2 H4转化率。值得注意的是,低Au含量的Au/Co 3 O 4/Al-100提供了高低温活性和高产量的独特组合。结果表明,在100 °C水热条件下制备的Au/Co 3 O 4/Al-100催化剂上存在较强的Au-Co 3 O 4相互作用,有利于氧的吸附和活化,从而提高了低温乙烯燃烧催化活性。
Microfibrous structured Au/Co3O4/Al-fiber catalyst to be used for the combustion of ethylene (C2H4) traces was developed by hydrothermal growth of Co(OH)2nanoarrays onto thin-sheets of Al-fiber followed by solvent-assisted incipient wetness impregnation of Au NPs. Such catalyst supported on the Co(OH)2/Al-fiber nanoarrays with different morphology exhibits different C2H4conversion under the same combustion reaction conditions. Notably, the Au/Co3O4/Al-100 of low Au content provides unique combination of high low-temperature activity and high throughput. It was found that the strong Au-Co3O4interactions over the Au/Co3O4/Al-100 catalyst prepared at 100 °C under hydrothermal conditions facilitate oxygen adsorption and activation, thereby enhancing the low-temperature catalytic activity for ethylene combustion.
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