Dynamic Adsorption of CO2 /N 2 on Cation-Exchanged Chabazite SSZ-13: A Breakthrough Analysis
Journal Article
·
· ACS Applied Materials and Interfaces
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- Physical and Computational Sciences Division, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States; Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
- Energy and Environment Directorate, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
- Physical and Computational Sciences Division, Pacific Northwest National Laboratory (PNNL), Richland, Washington 99352, United States
- Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
Alkali exchanged SSZ-13 adsorbents were investigated for their applicability in separating N2 from CO2 in flue gas streams using a dynamic breakthrough method. In contrast to IAST calculations based on equilibrium isotherms, K+ exchanged SSZ-13 was found to yield the best N2 productivity under dynamic conditions where diffusion properties play a significant role. This was attributed to the selective, partial blockage of access to the CHA cavities enhancing the separation potential in a 15/85 CO2/N2 binary gas mixture.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS); USDOE Office of Fossil Energy (FE)
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1437530
- Report Number(s):
- PNNL-SA-133039; AA7020000
- Journal Information:
- ACS Applied Materials and Interfaces, Vol. 10, Issue 17; ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
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