A comparative study on H2S removal using Mg–Al spinel (MgAl2O4) and MgO/Al2O3 nanocomposites
| Autor: | Alireza Salehirad, J. Bakhshi Azghandi, Seyed Mahdi Latifi, Mehdi Parvini |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Nanocomposite Materials science Precipitation (chemistry) General Chemical Engineering Spinel Mineralogy 02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Nanomaterials Flue-gas desulfurization Adsorption Chemical engineering engineering 0210 nano-technology |
| Zdroj: | Chinese Journal of Chemical Engineering. 25:1329-1334 |
| ISSN: | 1004-9541 |
| DOI: | 10.1016/j.cjche.2016.12.002 |
| Popis: | In this work MgO/Al 2 O 3 nanocomposites with weight ratios from 5% to 25% were synthesized by precipitation-impregnation method and their structural properties were characterized. In the next step, the capability of the nanocomposites in H 2 S removal compared to Mg–Al spinel (MgAl 2 O 4 ), synthesized through ion-pair complex precursor route and alumina samples, prepared via sol–gel precipitation methods, was investigated. The results indicated that among the studied sorbents Mg–Al spinel presents a distinctly higher H 2 S removal. In addition, the MgO/Al 2 O 3 nanocomposites compared to the alumina sorbents, exhibited much better performance in H 2 S removal. Also CO 2 -TPD analysis reveals higher amounts of basic sites for Mg–Al spinel compared to 25 wt% MgO/75 wt% Al 2 O 3 nanocomposite. |
| Databáze: | OpenAIRE |
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