LaNi4.25 Al0.75 coated with porous SiO2 is prepared with colloidal silica sol derived by sol-gel method of tetraethylortho silicate (TEOS).

• 以原硅酸乙酯(TEOS)为原料；采用溶胶-凝胶法制备TEOS的水解缩聚产物包覆LaNi4.；25Al0