Preparation of Transition Metal-Mesoporous Silica Hybrid for Adsorbent Materials
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概要
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Transition metal-mesoporous silica hybrids were prepared by complexation or ion exchange processes using Cr, Mn, Fe, Co, Ni and Cu nitrate or chloride salts. XRD measurement confirmed that Co and Ni metal crystallites in the hybrids were several nanometers in size. The size implies that the crystallites were formed within mesopores of mesoporous silica. The amount of transition metal in the hybrids prepared by complexation was larger than those by ion-exchange process. The hybrids have been examined for O<SUB>2</SUB> and H<SUB>2</SUB> adsorption at 298 K, and the hybrid including Ni metal has an ability to adsorb larger amount of H<SUB>2</SUB> than others.
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