Intertwined Nickel and Magnesium Oxide Rival Precious Metals for Catalytic Reforming of Greenhouse Gases,Advanced Sustainable Systems

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Intertwined Nickel and Magnesium Oxide Rival Precious Metals for Catalytic Reforming of Greenhouse Gases
Advanced Sustainable Systems ( IF 6.5 ) Pub Date : 2020-03-17 , DOI: 10.1002/adsu.202000041
Hikari Nishiguchi ₁ , Abdillah Sani Bin Mohd Najib ₁ , Xiaobo Peng ₂ , Yohei Cho ₃ , Ayako Hashimoto ₂ , Shigenori Ueda _{2,

4} , Takeshi Fujita ₅ , Masahiro Miyauchi ₃ , Hideki Abe _{1,

2}

Affiliation

A nanoporous catalyst consisting of intertwined, fibrous networks of nickel and magnesium oxide, i.e., n ‐Ni#MgO, is fabricated from a Ni‐Mg alloy via atmospheric treatments followed by acid leaching. The n ‐Ni#MgO efficiently catalyzes reforming of the two major greenhouse gases, methane (CH₄) and carbon dioxide (CO₂), in a low‐temperature range (<600 °C). Moreover, it exhibits higher coking tolerance than conventional nickel‐based catalysts and can rival commercial precious metal catalysts in terms of both the reaction activity and coking tolerance. The characterization results demonstrate that the excellent catalytic performance of n ‐Ni#MgO is attributed to the basic MgO support and intertwined nanoporous network structure, which significantly enhances the CO₂ utilization and topologically stabilize the interface of Ni and MgO. This work also offers a crucial design for topologically tailoring metal‐oxide catalysts, to achieve a highly active yet long‐term stable metal‐oxide interface.

中文翻译：

交织的镍和镁氧化物竞争性贵金属催化温室气体的重整

纳米多孔催化剂由镍和镁氧化物相互缠绕的纤维状网络（即n -Ni＃MgO）组成，是由Ni-Mg合金经过常压处理和酸浸制成的。所述Ñ -Ni＃氧化镁有效地催化重整两个主要的温室气体，甲烷（CH的₄）和二氧化碳（CO ₂），在低的温度范围（<600℃）。此外，与常规的镍基催化剂相比，它具有更高的焦化耐受性，并且在反应活性和焦化耐受性方面都可以与商业贵金属催化剂媲美。表征结果表明，n具有优异的催化性能。‐Ni＃MgO归因于基本的MgO支持和交织的纳米孔网络结构，可显着提高CO ₂利用率并在拓扑上稳定Ni和MgO的界面。这项工作还为拓扑调整金属氧化物催化剂提供了关键设计，以实现高活性但长期稳定的金属氧化物界面。

更新日期：2020-03-17

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