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The samples were initially activated to 300 ¡æ to remove the physisorbed water followed by cooling in nitrogen atmosphere and then the FTIR spectra were recorded (Fig. 2). All the r-alumina samples displayed a broad absorption peak at around 3500¨C3700 cm-1.

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sltmac(½ð±Ò+1): 2011-08-18 12:34:03
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