Abstract:Temperature-programmed desorption (TPD) and in situ Fouriertransform infrared (FT-IR) spectroscopic methods were employed to investigate the effect of loading and sample temperature on the state of benzene molecules inside the channels of NaZSM-5 zeolite. TPD profiles revealed the existence of at least three distinct states of benzene adsorption, characterized by desorption peak maxima at ca. 120 ο C, 170 ο C and 220 ο C, respectively. Based on the growth behaviour of these bands, it is suggested that the benz… Show more
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