단일 수성가스 전이 반응용 Cu/CeO₂ 촉매 최적화: 수산화탄산세륨 전구체를 이용한 CeO₂ 제조 및 최적 Cu 담지량 선정

• Published in: 한국수소및신에너지학회논문집 Vol. 32; no. 6; pp. 455 - 463
• Main Authors: 허유승(YU-SEUNG HEO), 정창훈(CHANG-HOON JEONG), 박민주(MIN-JU PARK), 김학민(HAK-MIN KIM), 강부민(BOO MIN KANG), 정대운(DAE-WOON JEONG)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 01.12.2021
• Subjects: 기계공학; Active sites(활성점); Interaction(상호작용); Water gas shift(수성가스 전이); Cu loading(Cu 담지량); Cerium hydroxy carbonate(수산화탄산 세륨)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2021.32.6.455

In this study, CeO2 support is synthesized from cerium hydroxy carbonate prepared using precipitation/digestion method using KOH and K2CO3 as the precipitants. The Cu was impregnated to CeO2 support with the different loading (Cu loading=10-40 wt. %). The prepared Cu/CeO2 catalysts were applied to a single stage water gas shift (WGS) reaction. Among the prepared catalysts, the 20Cu/CeO2 catalyst contained 20 wt.% of Cu showed the highest CO conversion (Xco=68% at 400°C). This result was mainly due to a large amount of active sites. In addition, the activity of the 20 Cu/CeO2 catalyst was maintained without being deactivated for 100 hours because of the strong interaction between Cu and CeO2. Therefore, it was confirmed that 20 Cu/CeO2 is a suitable catalyst for a single WGS reaction. KCI Citation Count: 1