Photo from wikipedia
Abstract In the present study, a series of Ru/ZSM-5 catalysts with different pore-size distributions were prepared and investigated for NH3 synthesis. Our studies indicate that Ru/ZSM-5-Mic with micropore structure exhibits… Click to show full abstract
Abstract In the present study, a series of Ru/ZSM-5 catalysts with different pore-size distributions were prepared and investigated for NH3 synthesis. Our studies indicate that Ru/ZSM-5-Mic with micropore structure exhibits superior NH3 synthesis rate, which is much higher than those of Ru/ZSM-5-Mac (with macroporous structure) and Ru/ZSM-5-Mes (with mesoporous structure) catalysts. A series of TPD experiments demonstrate that pore-size distributions play an important role in N2 adsorption and activation over Ru/ZSM-5. Moreover, the addition of La significantly promotes the NH3 synthesis performance over Ru/ZSM-5-Mic. Additionally, in situ DRIFTS studies indicate that the main intermediate species over Ru/ZSM-5-Mic are –NH2, and most of the surface hydrogen species desorb following the H2O-formation pathway.
Journal Title: Journal of Rare Earths
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!