Ryu, Seung-Hee Kim, Giyeong Gupta, Suchitra Bhattacharjee, Satadeep Lee, Seung-Cheol Lee, Hyunjoo Choi, Joon-Hwan Jeong, Hojin 2024-05-02T05:30:12Z 2024-05-02T05:30:12Z 2024-05-02 2024-04 1385-8947 https://pubs.kist.re.kr/handle/201004/149787 Durability is a crucial requirement in heterogeneous catalysis; however, many catalysts suffer from severe deactivation in humid conditions due to water poisoning. Ozone, as a significant air pollutant, should be efficiently removed through catalytic decomposition, making it imperative to develop a water-tolerant monolithic catalyst for practical air purification. In this study, we present highly durable Pd/CeO2 monolithic catalysts resistant to water poisoning achieved through a simple heat treatment of the ceria support. The heat treatment controlled the ceria surface properties, including oxygen vacancy defects, surface oxygen, and basicity, thereby improving resistance to water poisoning. When Pd/CeO2 monolithic catalysts were used in bench-scale ozone decomposition under humid conditions, the catalyst heat-treated at 900 degrees C exhibited superior performance without experiencing deactivation due to water poisoning. Modulating the ceria surface properties plays a pivotal role in enhancing water resistance, and heat-treated Pd/CeO2 monolithic catalysts stand as a promising candidate for practical ozone decomposition in air purification applications. English Elsevier BV Improved resistance to water poisoning of Pd/CeO2 monolithic catalysts by heat treatment for ozone decomposition Article 10.1016/j.cej.2024.149487 1 Chemical Engineering Journal, v.485 Chemical Engineering Journal 485 N scie scopus 001205171200001 2-s2.0-85186455470 Engineering, Environmental Engineering, Chemical Engineering Article DENSITY-FUNCTIONAL THEORY METHANE CERIA NANOPARTICLES ADSORPTION STABILITY PERFORMANCE COMBUSTION CHEMISTRY PALLADIUM Catalyst durability Water poisoning Heat treatment Ceria surface Pd/CeO2 monolith Practical ozone decomposition