Method for making highly porous, stable metal oxides with a controlled pore structure

摘要

Methods for making high-surface area, high-porosity, stable metal oxides, such as, but not limited to materials used as adsorbents and catalyst supports include (i) forming a solvent deficient precursor mixture from a metal salt and a base and reacting the metal ions and base ions in the solvent deficient precursor mixture to form an intermediate hydroxide product (e.g., metal hydroxide or metal oxide hydroxide), (ii) causing the intermediate hydroxide to form nanoparticles (e.g., by heating), and (iii) calcining the intermediate nanoparticles to sinter the nanoparticles together and yield a highly porous, stable metal oxide aggregate having a pore structure.

主权项

1. A method for manufacturing a highly porous, stable metal oxide alumina catalyst support consisting essentially of:
mixing aluminum phenoxide or at least one metal salt of an aluminum alkoxide with water as the only base reactant; to form a solvent deficient precursor mixture allowing the aluminum phenoxide or at least one metal salt of an of aluminum alkoxide and the water to react in the solvent deficient precursor-to form intermediate nanoparticles; and calcining the intermediate nanoparticles to yield a stable metal oxide having a pore structure; wherein the anion of the metal salt is chosen to control the pore structure of the stable metal oxide and the pore diameter of the porous metal oxide is controlled to a range of from about 2-50 nm.