Research on the Application of SiO2@TiO2 Catalyst Carrier in Methanol-reforming for Hydrogen Production
Hydrogen energy is an important renewable clean energy source,and the catalyst carrier is a key factor affecting the efficiency of methanol reforming for hydrogen production.A new type of catalyst carrier was prepared using SiO2@TiO2 powder as raw material.The catalyst was synthesized by adsorbing metal ions such as zinc,nickel,and cerium through the impregnation method.The physical and adsorption properties of the carrier and its impact on the catalytic performance of the catalyst were studied.The results indicate that the SiO2@TiO2 carrier has high thermal stability and compressive strength,and the pore size is mainly distributed around 5 nm,with a specific surface area of 138.930 m2·g-1;the carrier has good adsorption performance for active metals such as zinc,nickel,and cerium.The best adsorption effect is achieved when the impregnation temperature is 80 ℃ and the impregnation time is 50 minutes;by comparing the influence of Al2O3 carrier and SiO2@TiO2 carriers on the catalytic performance of catalysts,it is found that the new SiO2@TiO2 carriers has higher hydrogen selectivity at high temperature.This study can provide a reference for the development of new methanol-reforming catalysts for hydrogen production.
SiO2@TiO2 catalyst carrierMethanol-reforming for hydrogen productionAdsorption performanceCatalytic activity
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