Vieri, Hizkia Manuel Badakhsh, Arash Choi, Sun Hee 2024-01-19T09:32:57Z 2024-01-19T09:32:57Z 2023-06-08 2023-05 0363-907X https://pubs.kist.re.kr/handle/201004/113754 Ammonia is one of the promising carriers for hydrogen and a critical ingredient in many industries including fertilizers and pharmaceuticals. In the KAAP process, ruthenium- (Ru-) based catalysts showed 10-20 more activity compared with iron- (Fe-) based catalysts. The modifications that are applied to Ru-based catalysts revolve around changing the material of its support and/or promoters. This study compares the performance of a Ru-based catalyst for ammonia synthesis supported by La2Ce2O7 using barium (Ba), cesium (Cs), potassium (K), and lithium (Li) as promoters. Based on structural, physicochemical, adsorption, and electronic state analysis, the Cs-promoted catalyst is expected to perform best among all the promoted catalysts, while our findings suggest that the K-promoted catalyst performed the best in the actual catalytic reaction. This result will affect the development of Ru/La2Ce2O7-based catalysts, especially in ammonia synthesis at different temperatures and pressures. English John Wiley & Sons Inc. Comparative Study of Ba, Cs, K, and Li as Promoters for Ru/La2Ce2O7-Based Catalyst for Ammonia Synthesis Article 10.1155/2023/2072245 1 International Journal of Energy Research, v.2023 International Journal of Energy Research 2023 Y scie scopus 000991650100001 Energy & Fuels Nuclear Science & Technology Energy & Fuels Nuclear Science & Technology Article COX-FREE HYDROGEN SUPPORTED RUTHENIUM CATALYSTS RU CATALYST RU/CEO2 CATALYSTS TRANSITION-METAL ALKALI PROMOTER GENERATION STABILITY BARIUM POTASSIUM