DataVXACS Applied Nano MaterialsPaper
journal article·2025-02-28Open access

Degradation Behavior of CeO2-Based Nanoparticles as Oxygen Carriers for the Chemical Looping Process

Daiki Takahashi, Akira Yoko, Gimyeong Seong, Kazuyuki Iwase, Tadafumi Adschiri, Takaaki Tomai

ACS Applied Nano Materials· Volume 8· Issue 8
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Source abstract

Abstract

High Resolution Image Download MS PowerPoint Slide In this study, we investigated the degradation behavior of CeO 2 -based nanoparticles as oxygen carriers for the chemical looping process. In the investigation of the dependency of the reaction gases on the degradation in terms of changes in the CeO 2 crystallite, H 2 O and H 2 caused the most significant increase in the crystallite size (sintering) compared with other gases. It was found that Pt decoration, a well-known method for the enhancement of performance as an oxygen carrier, was effective in suppressing the sintering in various reaction gases. On the other hand, mixing with ZrO 2 nanoparticles that are not reactive as oxygen carriers also improves the durability of CeO 2 . The sintering-prevention effect of mixing ZrO 2 nanoparticles as nano-obstacles also contributes to exploiting the intrinsic catalytic activity of CeO 2 nanoparticles. Mixing with other nanomaterials would be a universal strategy for improving the durability and activity of thermodynamically unstable nanocatalysts.
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Research context

Ceramics & glassesNanomaterialsCatalysis & surfaces

OpenAlex topics: Chemical Looping and Thermochemical Processes · Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, 6-6-07 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan

WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

International Center for Synchrotron Radiation Innovation Smart, Tohoku University, 468-1 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8572, Japan

Department of Environmental and Energy Engineering, The University of Suwon, 17, Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 18323, Republic of Korea

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

New Industry Creation Hatchery Center

Tohoku University

The Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3, Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan

Funding

New Energy and Industrial Technology Development Organization · Ministry of Education, Culture, Sports, Science and Technology · Japan Society for the Promotion of Science

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