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Ionotropic gels of alginate, a polysaccharide, can be easily converted to aerogels of high surface area. The potential of alginate aerogels as adsorbents for trace polar contaminants in hydrocarbon feedstocks is evaluated, n-hexanol being used as a polar probe molecule. The influence of the nature of the gelling cation has been studied by testing Ca-, Ba-, Ni-, Co-, and Cu-alginate aerogels and a...
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