Molecular Layer Deposition-Modified 5A Zeolite for Highly Efficient Co₂ Capture
Abstract
Effective pore mouth size of 5A zeolite was engineered by depositing an ultrathin layer of microporous TiO2 on its external surface and appropriate pore misalignment at the interface. As a result, a slightly bigger N2 molecule (kinetic diameter: 0.364 nm) was effectively excluded, whereas CO2 (kinetic diameter: 0.33 nm) adsorption was only influenced slightly. The prepared composite zeolite sorbents showed an ideal CO2/N2 adsorption selectivity as high as ∼70, a 4-fold increase over uncoated zeolite sorbents, while maintaining a high CO2 adsorption capacity (1.62 mmol/g at 0.5 bar and 25 °C) and a fast CO2 adsorption rate.
Recommended Citation
Z. Song et al., "Molecular Layer Deposition-Modified 5A Zeolite for Highly Efficient Co₂ Capture," ACS Applied Materials and Interfaces, vol. 10, no. 1, pp. 769 - 775, American Chemical Society (ACS), Jan 2018.
The definitive version is available at https://doi.org/10.1021/acsami.7b16574
Department(s)
Chemical and Biochemical Engineering
Keywords and Phrases
Adsorption; Alignment; Atomic Layer Deposition; Carbon Dioxide; Deposition; Self Assembly; Titanium Dioxide; Zeolites; Adsorption Selectivity; CO2 Adsorption; CO2 Capture; Molecular Layer Deposition; Pore Misalignment; Titanium Compounds; CO2 Adsorption Rate; CO2/N2 Adsorption Selectivity
International Standard Serial Number (ISSN)
1944-8244; 1944-8252
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2018 American Chemical Society (ACS), All rights reserved.
Publication Date
01 Jan 2018
PubMed ID
29239167
Comments
We greatly acknowledge the financial support by the National Science Foundation (NSF), United States, under grant no. CBET-1402772.