The first observation of Ni nanoparticle exsolution from YSZ and its application for dry reforming of methane

Sangwook Joo; Chaehyun Lim; Ohhun Kwon; Linjuan Zhang; Jing Zhou; Jian-Qiang Wang; Hu Young Jeong; Yong-wook Sin; Sihyuk Choi; Guntae Kim

Materials Reports: Energy (May 2021)

The first observation of Ni nanoparticle exsolution from YSZ and its application for dry reforming of methane

Sangwook Joo,
Chaehyun Lim,
Ohhun Kwon,
Linjuan Zhang,
Jing Zhou,
Jian-Qiang Wang,
Hu Young Jeong,
Yong-wook Sin,
Sihyuk Choi,
Guntae Kim

Affiliations

Sangwook Joo: Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 698-798, Republic of Korea
Chaehyun Lim: Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 698-798, Republic of Korea
Ohhun Kwon: Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 698-798, Republic of Korea
Linjuan Zhang: Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, PR China
Jing Zhou: Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, PR China
Jian-Qiang Wang: Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, PR China
Hu Young Jeong: UNIST Central Research Facilities and School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
Yong-wook Sin: Materials & Devices Advanced Research Institute, LG Electronics, Seoul, Republic of Korea
Sihyuk Choi: Department of Mechanical Engineering, Kumoh National Institute of Technology, Gyeongbuk, 39177, Republic of Korea; Corresponding author.
Guntae Kim: Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 698-798, Republic of Korea; Corresponding author.

Journal volume & issue: Vol. 1, no. 2
p. 100021

Abstract

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Ni nanocatalysts produced through exsolution have shown strong resistance to particle sintering and carbon coking in a beneficial dry reforming of methane (DRM) reaction utilizing greenhouse gases such as CH4 and CO2. However, most of the existing oxide supports for exsolution have been limited to perovskite oxide, while studies on fluorite support have been rarely conducted due to the limited solubility despite its excellent redox stability. Here we demonstrate that 3 mol% Ni can be successfully dissolved into the yttria-stabilized zirconia (YSZ) lattice and be further exsolved to the surface in a reducing atmosphere. The YSZ decorated with exsolved Ni nanoparticles shows enhanced catalytic activity for DRM reaction compared to the conventional cermet type of bulk Ni-YSZ. Moreover, the catalytic activity is extremely stable for about 300 h without significant degradation. Overall results suggest that the YSZ-based fluorite structure can be utilized as one of the support oxides for exsolution.

Published in Materials Reports: Energy

ISSN: 2666-9358 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.keaipublishing.com/en/journals/materials-reports-energy/

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