Sorption of Polar Sorbates NH 3 , H 2 O, SO 2 and CO 2 on Selected Inorganic Materials.
Katarzyna ZarębskaMikihiro NomuraMarta WolczkoJakub SzczurowskiBartłomiej PawlakPaweł BaranPublished in: Materials (Basel, Switzerland) (2023)
In this paper, the sorption of NH 3 , H 2 O, SO 2 and CO 2 was tested for several selected inorganic materials. The tests were performed on samples belonging to two topologies of materials, faujasite (FAU) and framework-type MFI, the structures of which differ in pore size and connectivity. All sorbates are important in terms of reducing their emissions to the environment. They have different chemical nature: basic, alkaline, and acidic. They are all polar in structure and composition and two of them (ammonia and water vapor) can form hydrogen bonds. These differences result in different interactions with the surface of the adsorbents. This paper presents experimental data and proposes a mathematical description of the sorption process. The best fit of the experimental data was obtained for the Toth and GAB models. The studies showed that among the selected samples, faujasite has the best sorption capacity for ammonia and water vapor, while the best sorbent for sulfur dioxide is the MFI framework type. These materials behave like molecular sieves and can be used for quite selective adsorption of relevant gases. In addition, modification of the faujasite with organic silane resulted in a drastic reduction in the surface area of the sorbent, resulting in significantly lower sorption capacities for gases.
Keyphrases
- sewage sludge
- room temperature
- anaerobic digestion
- organic matter
- ionic liquid
- electronic health record
- perovskite solar cells
- big data
- solid phase extraction
- water soluble
- metal organic framework
- molecularly imprinted
- municipal solid waste
- heavy metals
- risk assessment
- white matter
- data analysis
- machine learning
- mass spectrometry
- gas chromatography
- case control
- aqueous solution