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loser

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FT-IR spectra for powder and extrudate samples have been shown in Fig.5 in range of 400-1400 cm-1 wave number.
Structural vibrations near the bands: 450, 540, 860, 1120 and 1225 cm-1 that are the ZSM-5 Zeolite specification, for both powder shape and extrudate is visible in Fig.5.
540 cm-1 band is related to stretching vibration of double five membered rings (D5R) in MFI network that are completely alternative which are connected along a, b, c axis or at the intersection of channels. Meanwhile around the 450cm-1 band, appeared peak shows bending vibration of T.O connection related to TO4 tetrahedral. 800 cm-1  and 1120 cm-1 bands are relevant to outside stretching symmetric vibrations and inside stretching asymmetric vibrations respectively.

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loser: ½ð±Ò+40, ·­ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2016-04-07 16:39:54
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