Author： Goswamee R.L. Bosc F. Cot D. Mansouri A. El Lopez M. Morato F. Ayral A.
Publisher： Springer Publishing Company
ISSN： 0928-0707
Source： Journal of Sol-Gel Science and Technology, Vol.29, Iss.2, 2004-02, pp. : 97-105
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Abstract
Two types of nanocomposites and nanoporous powders and related coatings were prepared by the sol-gel route. These silica-based materials contain dispersed reactive oxides, ZnO and ZnCr2O4, respectively. Experiments evidenced their ability of reversible chemisorption of H2S as ZnS. Their attractive porous characteristics (small pore size ∼2–2.5 nm, high specific surface area ∼900–1100 m2 · g−1, high porosity ∼50–60%) are not significantly modified during the successive treatments of H2S chemisorption and oxide regeneration. These preliminary results encourage to pursue this study which aims at the preparation of nanofilters for the desulfurization of gas mixtures.
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