Preparation and Performance Study of Mg-Zeolite Calcined Diatomite
In order to resolve the problem of low adsorption performance of calcined diatomite(C-D),Mg-Z-C-D was prepared by hydrothermal method using C-D as raw material,MgCl2 and NaOH as precursors,and characterized by XRD,SEM and TEM.The results showed that the Mg-Z-C-D had a high specific surface area of 237.47 m2/g,which was 273 times of C-D;The adsorption performance of Mg-Z-C-D for methylene blue(MB)was 125.46 mg/g,which was 77 times of C-D.The adsorption of MB on Mg-Z-C-D was monolayer adsorption process,the chemisorption dominated the adsorption rates,and the intra-particle-diffusion process was the main rate-controlling process.
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