Nature of ammonia storage sites in H-SSZ-13 and Cu-SSZ-13

Key Points

• The aim is to characterize ammonia storage sites in H-SSZ-13 and Cu-SSZ-13 with varying molar ratios.
• Conducted NH3 sorption experiments using in situ DRIFT spectroscopy
• Performed NH3-TPD flow reactor experiments
• Investigated different Si/Al and Cu/Al molar ratios
• Identified distinct ammonia storage sites specific to H-SSZ-13 and Cu-SSZ-13
• Revealed the influence of Si/Al and Cu/Al molar ratios on ammonia storage capacity