| Abstract: | A fast and accurate method for identification and determination of purity of Zeolite Socony Mobil 5 (ZSM-5) zeolite was developed using the IR optical density ratio of the bands at 550 and 450 cm?1 in the mid-IR region of the structure spectra. The optical density values obtained from the proposed method, for ZSM-5 zeolite synthesized, are compared with those of the Bayer ZSM-5 zeolite used as reference material. For well-crystallized calcined ZSM-5 zeolite, this ratio is circa 0.8. This ratio is found to be less, if amorphous silicate is present in zeolite. The presence of a band at 550 cmSUP>?1 in addition to the one at 450 cm?1 shows that ZSM-5 zeolite has been formed even if the material is X-ray amorphous. The absence of the structure-sensitive band at 550 cm?1 unambiguously indicates that such a zeolite has not been formed. |
