Choi, Ye-na Song, Hyun-tae Kim, Hyun Dong JEONGMIN, SEO Lee, Kwan Young Moon, Dong Ju 2024-01-12T02:44:27Z 2024-01-12T02:44:27Z 2023-11-02 2023-10-27 https://pubs.kist.re.kr/handle/201004/76349 Ammonia (NH3) is economical in hydrogen supply because the energy density per unit volume is high at 17.3 wt%. It is one of the candidates for hydrogen carriers. Ru, Ni, Co, and Cu-based catalysts have been studied in ammonia decomposition as active metals. Ru-based catalyst was mainly developed for commercial processes because of highly activity of Ru. In this study, Ru-based metal phosphate and oxide catalysts were investigated for the production of hydrogen by the decomposition of ammonia. Catalysts were prepared by precipitation and incipient impregnation method. The prepared catalysts were characterized by N2-physisorption, NH3-TPD, H2-TPR, and XRD analysis. The ammonia decomposition reaction was performed in a fixed bed reactor under 400 ~ 600 oC, 1 bar, and GHSV = 10,000 h-1. It was found that the MgO-based metal-oxide catalyst exhibited a higher ammonia conversion than the metal-phosphate-oxide catalyst. English 한국화학공학회 Hydrogen production by the decomposition of ammonia over Ru/Metal phosphate oxide catalyst Conference 1 2023 KIChE Fall Meeting and International Symposium (한국화학공학회 2023년도 가을 총회 및 국제 학술대회) 2023 KIChE Fall Meeting and International Symposium (한국화학공학회 2023년도 가을 총회 및 국제 학술대회) KO 대전 DCC 2023-10-25 새로운 시작: 다시 도약하는 화학공학, 경계를 넘어 미래로