Impact of Ce/Zr Ratio in the Nanostructured Ceria and Zirconia Composites on the Selective CO2 Adsorption

High surface-area, mesoporous CeO2, ZrO2, and Ce-Zr composite nanoparticles were developed using the hydrothermal template-assisted synthesis method. Samples were characterized using XRD, N2 physisorption, TEM, XPS, and FT-IR spectroscopic methods. The CO2 adsorption ability of the obtained material...

Full description

Saved in:
Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2023-08, Vol.13 (17), p.2428
Main Authors: Issa, Gloria, Kormunda, Martin, Tumurbaatar, Oyundari, Szegedi, Ágnes, Kovacheva, Daniela, Karashanova, Daniela, Popova, Margarita
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Carbon dioxide
Ce-Zr composite nanoparticles
CeO2
Cerium oxides
Chemisorption
Chloride
Climate change
CO2 capture
Composite materials
Environmental impact
Equilibrium conditions
Flow stability
Flue gas
Fossil fuels
Greenhouse gases
Heat of adsorption
Metal oxides
Nanomaterials
Nanoparticles
Nanotechnology
Oxygen enrichment
Porous materials
Precipitation
Selective adsorption
Surface chemistry
Surfactants
Temperature
Water vapor
Zirconia
Zirconium
Zirconium dioxide
Zirconium oxides
ZrO2
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High surface-area, mesoporous CeO2, ZrO2, and Ce-Zr composite nanoparticles were developed using the hydrothermal template-assisted synthesis method. Samples were characterized using XRD, N2 physisorption, TEM, XPS, and FT-IR spectroscopic methods. The CO2 adsorption ability of the obtained materials was tested under dynamic and equilibrium conditions. A high CO2 adsorption capacity in CO2/N2 flow or CO2/N2/H2O was determined for all studied adsorbents depending on their composition flow. A higher CO2 adsorption was registered for Ce-Zr composite nanomaterials due to the presence of strong O2− base sites and enriched surface oxygen species. The role of the Ce/Zr ratio is the process of the formation of highly active and selective adsorption sites is discussed. The calculated heat of adsorption revealed the processes of chemisorption and physisorption. Experimental data could be appropriately described by the Yoon–Nelson kinetic model. The composites reused in five adsorption/desorption cycles showed a high stability with a slight decrease in CO2 adsorption capacities in dry flow and in the presence of water vapor.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano13172428