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Intertwined Nickel and Magnesium Oxide Rival Precious Metals for Catalytic Reforming of Greenhouse Gases
Author(s) -
Nishiguchi Hikari,
Najib Abdillah Sani Bin Mohd,
Peng Xiaobo,
Cho Yohei,
Hashimoto Ayako,
Ueda Shigenori,
Fujita Takeshi,
Miyauchi Masahiro,
Abe Hideki
Publication year - 2020
Publication title -
advanced sustainable systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.499
H-Index - 24
ISSN - 2366-7486
DOI - 10.1002/adsu.202000041
Subject(s) - catalysis , nickel , nanoporous , methane , magnesium , materials science , oxide , leaching (pedology) , metal , chemical engineering , syngas , nickel oxide , inorganic chemistry , carbon dioxide reforming , metallurgy , nanotechnology , chemistry , organic chemistry , environmental science , soil science , engineering , soil water
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 (CH 4 ) and carbon dioxide (CO 2 ), 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 CO 2 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.