Preparation method of bimetallic co-doped cerium dioxide catalyst with porous structure
A technology of ceria and porous structure, applied in the field of double metal co-doped ceria, the catalyst preparation field, can solve the problems of poor stability, achieve good stability, enrich oxygen vacancies and defects, and improve catalytic activity Effect
Inactive Publication Date: 2021-01-05
UNIV OF SCI & TECH BEIJING
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Abstract
The invention relates to a preparation method of bimetallic co-doped cerium dioxide catalyst with porous structure, which comprises the following steps: dissolving a cerium (Ce) element, transition metal elements (V, Ti, Cr, Mn, Fe, Co, Ni, Cu and the like) and soluble salts (nitrate, acetate or chlorate) of noble metal elements (Rh, Pd, Au, Ru and the like) into an aqueous solution, adding the solution into an oxalic acid or ammonium oxalate solution, and carrying out coprecipitation to obtain a multi-component precipitate; and roasting in air to obtain the bi-metal co-doped cerium dioxide multi-component composite metal oxide catalyst. The uniform mixing and precipitation of various metal ions are realized through an oxalic acid coprecipitation method which is simple and convenient to operate, and the preparation method is simple and can be used for mass production; the bimetallic co-doped cerium dioxide catalyst with the porous structure has the characteristics of more variable valence metal ions, higher specific surface area, excellent reversible oxygen storage and release capability, synergistic effect among metal ions and the like, and has wide application prospect in the field of heterogeneous catalysis.
Application Domain
Heterogenous catalyst chemical elementsMetal/metal-oxides/metal-hydroxide catalysts
Technology Topic
OXALIC ACID DIHYDRATEAqueous solution +10
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