Intertwined Nickel and Magnesium Oxide Rival Precious Metals for Catalytic Reforming of Greenhouse Gases
Hikari Nishiguchi, Abdillah Sani Bin Mohd Najib, Xiaobo Peng, Yohei Cho, Ayako Hashimoto, Shigenori Ueda, Takeshi Fujita, Masahiro Miyauchi, Hideki Abe
Advanced sustainable systems
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.
Probe Raman, methane reformation intertwined catalysts precious metal‐based catalysts