Abstract
Abstract 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.
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