Support effects of Ru based catalysts for CO catalytic oxidation

Abstract CeO₂, pseudo boehmite [AlO(OH)], γ-Al₂O₃ and ZrO₂ were used as the carriers, and Ru was the active component, Ru based catalysts with different carriers were prepared using a deposition precipitation method. The prepared catalytic materials were characterized by XRD, H₂-TPR, BET, XPS, etc, and the influence of carrier on the catalytic CO oxidation was also explored. The results indicated that different carriers mainly affected the interaction between Ru species and the carrier, showing obvious support effects. Among them, the Ru species on Ru/CeO₂-BM catalyst exhibited good dispersion and could generate oxygen vacancies, thus exhibiting excellent low-temperature catalytic performance. Under the conditions of an oxygen excess coefficient of 5, a space velocity of 60 000 h^-1, and the reaction temperature of 147 ℃, the outlet CO concentration decreased to less than 1×10^-5, and the CO conversion reached 99.9%.

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	ZHENG Xiwen
	JIN Shishan
	ZENG Xin
	HAN Jiao
	HU Shaozheng
	ZHANG Lei
	GAO Zhixian

Keywords： Ru based catalyst support interact CO catalytic oxidation

Received 2023-09-13;

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ZHENG Xiwen, JIN Shishan, ZENG Xin, HAN Jiao, HU Shaozheng, ZHANG Lei, GAO Zhixian.Support effects of Ru based catalysts for CO catalytic oxidation[J] Chemcial Industry and Engineering, 2025,V42(2): 45-54

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