Sorption characteristics of mesoporous composite SiO2·TiO2
| Main Authors: | J.R. Uzokov, N.K. Mukhamadiev |
|---|---|
| Format: | Article info application/pdf |
| Bahasa: | eng |
| Terbitan: |
Central Asian Studies
, 2021
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| Subjects: | |
| Online Access: |
https://cajmns.centralasianstudies.org/index.php/CAJMNS/article/view/220 https://cajmns.centralasianstudies.org/index.php/CAJMNS/article/view/220/474 |
Daftar Isi:
- Samples of mesoporous sorbents based on tetraethoxysilane and titanium dioxide in an acidic medium were obtained using the sol-gel technology. The synthesized mesoporous sorbents are characterized by a large specific surface area of 700-950 m2/g, as well as an average diameter of 2,6-6,5 nm and a low pore volume of 0,60-0,90 cm3/g. It was found that a hysteresis loop is observed in the mesoporous sorbents during the adsorption of benzene and water vapors. The phase composition of the sorbents was studied by X-ray diffractometry (XRD), surface characteristics by a scanning electron microscope (SEM). The mesoporous sorbents can be used as a sorbent for gas chromatographic separation of light alkanes, olefins, aromatic hydrocarbons, alcohols, aldehydes, ketones, ethers and esters.