Method for Obtaining Metal Oxides Supported on Mesoporous Silica Particles

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This invention describes a method for making metal oxides (such as NiO, PdO, PtO, etc.) supported on mesoporous silica particles via an efficient, scalable, and environmentally friendly process. The method improves the distribution and stability of metal oxides within an ordered mesoporous silica structure and allows for rapid synthesis at room temperature, avoiding high temperatures or toxic solvents. Crucially, the process is suitable for continuous production, lowering cost and facilitating industrial-scale manufacture.

Use CasesContent extracted from patent full text and abstract with AI.

• Catalysts in chemical reactions, such as reforming of methane, biomass tar steam reforming, ethanol steam reforming, or alkylation reactions.
• Affinity materials for protein or enzyme purification (e.g., NiO@OMS for His-tag protein purification).
• Enzyme immobilization matrices for biocatalytic processes.
• Advanced materials for sensors, separation processes, and adsorption technologies.
• Components in chemical manufacturing plants requiring robust, high-surface-area supported catalysts.
• Materials for research and development in catalysis or biochemistry.

BenefitsContent extracted from patent full text and abstract with AI.

• Highly uniform distribution and fine dispersion of metal oxide on the porous silica support, enhancing performance and preventing agglomeration.
• Substantial improvement in scalability via a continuous, one-pot synthesis route, enabling kilograms-per-day production without batch-to-batch variation.
• Green synthesis at near-neutral pH and room temperature, minimizing energy consumption and avoiding harmful solvents.
• Faster synthesis compared to conventional methods (instant precipitation), lowering production time and cost.
• Maintains ordered pore structure, high surface area, large pore volume, and mechanical stability in final product.
• Applicability to a broad range of metals, making the process versatile for many different applications.

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Patent Abstract

The present invention refers to a method for obtaining metal oxides supported on mesoporous silica particles comprising the steps of a) providing a solution of at least one metal salt, wherein the metal is selected from a group containing Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ru, Rh, Pd, Ag, Ir, Pt and Au, preferably V, Fe, Ni, Cu, Ru, Rh, Pd, Ag and Pt, more preferably V, Ni, Ru, Rh, Pd and Pt; b) providing a solution of at least one complex forming agent, wherein the at least one complex forming agent is of the general formulae (I) Y3Si(CH2)n-X (I), wherein X is a complexing functional group; Y is -OH or a hydrolysable moiety selected from the group containing halogen, alkoxy, aryloxy, acyloxy, in particular -OH, -alkoxy; n is ≥1, in particular ≥2; c) mixing the metal salt solution of step a) and the complex forming agent solution of step b) to obtain a metal precursor; d) adding at least one solution containing at least one pore structure directing agent (SDA) to the metal precursor of step c) to obtain a metal precursor - template - mixture; e) adding at least one alkali silicate solution to the metal precursor - template - mixture of step d) at room temperature to obtain a silica-supported metal complex; and f) calcination of the silica-supported metal complex of step e) under air to obtain the supported metal oxide mesoporous silica particles.