Titlebook: Materials Syntheses; A Practical Guide Ulrich Schubert,Nicola Hüsing,Richard M. Laine Book 2008 Springer-Verlag Vienna 2008 Aerogel.Inorgan

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Porous Silica Gel by Acid Leaching of Metakaolin, at different temperatures (600, 700, 800 and 900°C). The metakaolins thus prepared were treated with 6 . aqueous HCl at room temperature and at 90°C, varying the duration of the treatments. All metakaolins prepared by calcination at 600, 700 or 800°C showed a very similar reactivity, while that pre

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Zirconia-Pillared Clays,r by partial hydrolysis of zirconyl chloride or from zirconium acetate solution), followed by calcination. The use of the Zr acetate solution is a much less aggressive method. Well-ordered layered solids were mostly obtained, while delamination and acid leaching were observed to happen, together wit

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Montmorillonites with Mixed Aluminum-Lanthanide Oxide Pillars, of tetrahedral aluminum in the pillars. The materials have a high thermal stability, and high specific surface area and porosity, with pores at the limit between micropore and mesopore sizes. The number and strength of the acid sites in these materials is also high.

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perpetual

Templated Carbon from Pyrolysis of Pyrene in Pillared Clay Matrices,e use of pillared clays and various organic precursors, including pyrene. Pyrolysis was performed at 500, 700 and 1000 °C followed by inorganic matrix removal. X-ray powder diffraction data show that the carbon samples have a highly disordered structure.

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Fiberous Carbon from Sepiolite Clay and Propylene,ganic precursor. Carbon fibers (1–1.5 µm long) were obtained whose orientation and shape resemble that of the original clay. The results indicated that there is a correlation of the reversible specific capacity obtained and the surface properties of the template sepiolite. The electrochemical perfor

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Aerosol Spray Synthesis of Porous Molybdenum Sulfide Powder,ion of ammonium tetrathiomolybdate, (NH.).MoS., and colloidal silica, SiO., was ultrasonically nebulized using a household humidifier; the resulting aerosol droplets are heated in a furnace where solvent evaporation and precursor decomposition occurs, yielding a MoS./SiO. composite. Leaching of the

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florid

Nanostructured Pt-doped Tin Oxide Films,s. Acetylacetone was added as a chelating agent to control the hydrolysis and condensation of tin alkoxide and, consequently, the gelation rate. This procedure allows obtaining a sol phase viscosity suitable for the spin-coating process.

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Copper Nanoparticles in Silica, type (RO).Si(CH.).A, where A is a coordinating organic group. The obtained metal complexes {[(RO).Si(CH.).A].Cu]. are used as precursors for sol-gel processing, with Si(OR). as co-reactant to adjust the metal:silica ratio. In the second step, the metal complex-containing gels are calcined in air at