In this paper, we report on the fabrication of a new material SiO@MIL-101(Cr), which synthesis is based on the metal-organic framework MIL-101(Cr) and the silica support Chromosorb W. The obtained surface-layer sorbent was analyzed by powder X-ray diffraction analysis, Raman spectroscopy and porosity measurement. The retention regularities and the thermodynamic characteristics of the sorption of volatile organic compounds from the gas phase were studied for the packed column with the surface-layer sorbent SiO@MIL-101(Cr). The results indicated that the adsorbent-adsorbate interaction in the mesoporous structure of SiO@MIL-101(Cr) depends not only on the dispersion attractive forces but also on π-π-stacking and specific interactions with hydroxyl groups and metal cations' open coordination sites on the pore surface. In this work, we gave examples of gas chromatograms of isomers of alkanes, arenes, and chlorine derivatives of methane on a packed column with the obtained sorbent. Examples of gas chromatograms of isomers of alkanes, arenes, and chlorine derivatives of methane on a packed column with the obtained sorbent are presented.
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http://dx.doi.org/10.1016/j.chroma.2022.463373 | DOI Listing |
Molecules
August 2024
Research Institute of New Chemical Technologies, L.N. Gumilyov Eurasian National University, Astana 010000, Kazakhstan.
The physicochemical properties of natural bentonite and its sorbents were studied. It has been established the modification of natural bentonites using polyhydroxoxides of iron (III) (mod.1_Fe_5-c) and aluminum (III) (mod.
View Article and Find Full Text PDFACS Environ Au
November 2023
Department of Civil and Environmental Engineering, University of Nevada, Reno, 1644 N. Virginia Street, Reno, Nevada 89557, United States.
Heliyon
November 2023
Department of Analytical Chemistry and Life Safety Department, Ivan Franko National University of Lviv, 6 Kyryla and Mefodiya Str., 79005 Lviv, Ukraine.
The sorption properties of Na-modified Ukrainian Transcarpathian clinoptilolite towards neodymium aqueous solutions under dynamic conditions have been investigated. The sorption capacity of the Na-from of Transcarpathian clinoptilolite towards Nd(III) significantly depends on the concentration of neodymium salt, the pH of the solution, and the heat treatment temperature of the sorbent. Nd(III) is most efficiently sorbed from slightly alkaline solutions (pH 8.
View Article and Find Full Text PDFMaterials (Basel)
February 2023
Department of Chemistry and Chemical Engineering, Sevastopol State University, Universitetskaya Str., 33, 299053 Sevastopol, Russia.
Radium isotopes have traditionally been used as tracers of surface and underground fresh waters in land-ocean interactions. The concentration of these isotopes is most effective on sorbents containing mixed oxides of manganese. During the 116 RV Professor Vodyanitsky cruise (22 April-17 May 2021), a study about the possibility and efficiency of Ra and Ra recovery from seawater using various types of sorbents was conducted.
View Article and Find Full Text PDFJ Chromatogr A
August 2022
Samara State Technical University, Molodogvardeyskaya St. 244, Samara 443100, Russian Federation; Samara Branch of P.N. Lebedev Physical Institute of the Russian Academy of Science, Novo-Sadovaya St. 221, Samara 443011, Russian Federation; Institute of Experimental Medicine and Biotechnology, Samara State Medical University, Chapayevskaya St. 89, Samara 443099, Russian Federation.
In this paper, we report on the fabrication of a new material SiO@MIL-101(Cr), which synthesis is based on the metal-organic framework MIL-101(Cr) and the silica support Chromosorb W. The obtained surface-layer sorbent was analyzed by powder X-ray diffraction analysis, Raman spectroscopy and porosity measurement. The retention regularities and the thermodynamic characteristics of the sorption of volatile organic compounds from the gas phase were studied for the packed column with the surface-layer sorbent SiO@MIL-101(Cr).
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