Influences of Na+ co-cation on the structure and performance of Cu/SSZ-13 selective catalytic reduction catalysts
Journal Article
·
· Catalysis Today
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Here, a series of Cu,H/SSZ-13 and Cu,Na/SSZ-13 catalysts were synthesized, degreened and hydrothermally aged for use in the standard NH3-SCR reaction. Surface area/pore volume and XRD analyses were used to probe the textural properties of the catalysts. H2-TPR and EPR were utilized to quantitatively describe the various Cu species. NH3-SCR was tested at both a lower space velocity to probe the light-off behavior, and at a higher space velocity to generate data for kinetic analysis. Na+ co-cation addition was found to promote turnover rates of isolated Cu-ions at low reaction temperatures. However, this promoting effect is compromised by decreases in Cu exchange capacity and hydrothermal stability of the Cu,Na/SSZ-13 catalysts.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1736020
- Alternate ID(s):
- OSTI ID: 1636650
- Report Number(s):
- PNNL-SA--138691
- Journal Information:
- Catalysis Today, Journal Name: Catalysis Today Vol. 339; ISSN 0920-5861
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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