From the
curve a, b, c, we can
find that there were a lot of small peaks
situating in the range of 1600–1200 cm1, attributed to the glucose
and polyvinyl pyrrolidone, which indicated that, the surfactants
still attached to the surface of alumina when the calcination
temperature reached to 800 C, A small adsorption peak located in
1040 cm1 in curve b, assigned to stretching vibration of C–O–C,
which was due to the oxidation of glucose in the calcination
From thecurve a, b, c, we canfind that there were a lot of small peakssituating in the range of 1600–1200 cm1, attributed to the glucoseand polyvinyl pyrrolidone, which indicated that, the surfactantsstill attached to the surface of alumina when the calcinationtemperature reached to 800 C, A small adsorption peak located in1040 cm1 in curve b, assigned to stretching vibration of C–O–C,which was due to the oxidation of glucose in the calcination
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