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Synthesis and characterization of titanosilicates from white sand silica and its hydrogen uptake

✍ Scribed by N. Ismail; I. Hamdy Abd El-Maksod; H. Ezzat

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
923 KB
Volume
35
Category
Article
ISSN
0360-3199

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✦ Synopsis

Natural silica source from Red Sea Desert mine e Egypt for white sand has been successfully employed as a starting precursor for hydrothermal preparation of titanosilicate types natisite and sitinakite. Interestingly the structure of the starting precursor of the silica source plays a role in controlling the type of the titanosilicate produced. ETS-4, natisite, sitinakite plus the doped ETS-4 and natisite with vanadium have been studied for hydrogen uptake. The samples adsorbed 2e2.3 wt% hydrogen at Γ€193 C and 20 bar applied hydrogen pressure. The dense natisite structure prepared in this study is found to be superior to those prepared using commercially available silica.

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