Macropore-Size Engineering toward Enhancing the Catalytic Performance of CO Oxidation over Three-Way Catalyst Particles

• DOI: 10.1021/acsami.3c11489
• Publication Date: 2023-11-09T20:55:20Z
• Authors: Phong Hoai Le; Yasuhiko Kitamoto; Shunki Yamashita; Kiet Le Anh Cao; Tomoyuki Hirano; Tareq W. M. Amen; Nao Tsunoji; Takashi Ogi
• Keywords: Macropore; Catalytic efficiency

In recent years, transportation-related air pollution has escalated into a global concern, necessitating the development of three-way catalyst (TWC) technology to address harmful emissions. However, efficiency TWC's performance in mitigating these emissions been hindered because limited mass transfer within their structures. Thus, this study attempted overcome existing issue by synthesizing series macroporous TWC particles exhibiting various macropore sizes via template-assisted spray process, aiming achieve optimal and catalytic performance. The synthesis incorporated template (size 67-381 nm) obtain Thereafter, were assessed for carbon monoxide (CO) oxidation performance, revealing substantial influence size on Interestingly, among investigated samples, those containing smallest largest macropores demonstrated highest CO performances. Based results, plausible reactant diffusion mechanism was proposed explain effect This work may have significant implications optimizing structure enhance gas purification process.