Selective Hydrogenation of CO2 and CO over Potassium Promoted Co/ZSM-5
- Type: Conference Presentation
- Conference Type: AIChE Annual Meeting
- Presentation Date: November 7, 2021
- Duration: 18 minutes
- Skill Level: Intermediate
- PDHs: 0.50
The contrast in trends over the two classes of catalysts is further elucidated by in situ EXAFS (Figure 3), demonstrating that increased contact of K and Co in the IWI catalysts facilitates donation of electrons from electropositive potassium to the more electronegative cobalt. Interestingly, the IWI catalysts with a lower Si/Al ratio are reduced to a lesser extent, likely because the higher acid site density within H-ZSM-5 (Si/Al = 50) prevents complete reduction of the Co nanoparticles. Therefore, both the structure of the K-Co active phase and acidic properties of ZSM-5 are responsible for controlling the performance during CO2-FTS.
 Wang, C., et al., J. Am. Chem. Soc. 2019, 141 (21), 8482-8488.
|AIChE Member Credits||0.5|
|AIChE Graduate Student Members||Free|
|AIChE Undergraduate Student Members||Free|