Abstract：The preparation method of supported noble metal catalysts often affects their structure and catalytic properties. In this paper, the ZSM-5 supported Pt nanoparticle catalysts were prepared by a developed alkali treatment method. The physicochemical properties of the catalysts were characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 sorption, temperature programmed desorption of ammonia (NH3-TPD). The selective hydrogenation of cinnamaldehyde was used to investigate their catalytic performance. The results showed that their turnover frequency (TOF) values were higher than that of the Pt/ZSM-5 catalyst prepared by the traditional impregnation method, and the catalytic activity could be further improved by changing the H2 pressure and the reaction temperature. Characterization results demonstrated that the Pt/ZSM-5 catalysts prepared by alkali treatment possessed smaller particle size of Pt nanoparticles and more surface acid sites, which facilitated the adsorption and activation of cinnamaldehyde on the surface of the catalyst and further leaded to their higher catalytic activity.
LU Shan,ZHAI Shuai,HU Kai et al. Pt/ZSM-5 Catalysts Prepared by Alkali Treatment for the Selective Hydrogenation of Cinnamaldehyde[J]. Chemical Reaction Engineering and Technology, 2023, 39(1): 29-35.
