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Single-phase boehmite nanocrystals that are free of nitrate contamination could be prepared at supercritical hydrothermal conditions at 400 o C and 35 MPa for 30 min. XRD analysis showed that the single phase boehmite was formed in the absence of alkali species. Two well-defined and strong absorption bands observed at 3300 and 3092 cm -1 in the present infrared spectra showed...
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