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Chemical modification and characterization of clinoptilolite by 1,3-Phenylenediamine as a sorbent for the removal of NO2

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Figure

Fig. 2A displays FTIR results for raw clinoptilolite where the bands for water, OH groups, silica oxides and aluminum oxides are demonstrated [7,8]
Fig. 3. DTA-TGA curve of raw (A) and modified clinoptilolite samples.
Fig. 7. Temkin isothermforNO2adsorption onto modified zeolite.
Fig. 9. Pseudo-second-order kinetic of NO2 adsorption on modified clinoptilolite.

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