초록 ▼

Semi-crystalline alumina compositions with framework mesopores are disclosed. The compositions are assembled from inorganic aluminum precursors and nonionic polyethylene oxide surfactants. The new assembly pathway introduces several new concepts to alumina mesostructure synthesis. The application of

Semi-crystalline alumina compositions with framework mesopores are disclosed. The compositions are assembled from inorganic aluminum precursors and nonionic polyethylene oxide surfactants. The new assembly pathway introduces several new concepts to alumina mesostructure synthesis. The application of low-cost, non-toxic and biodegradable surfactants and low cost aluminum reagents as alumina precursors which are inorganic and low solution reaction temperatures, introduces efficient and environmentally clean synthetic techniques to the formation of mesostructures. Recovery of the surfactant can be achieved through solvent extraction where the solvent may be water or ethanol or by calcination.

대표청구항 ▼

[ We claim:] [1.] A synthetic mesostructured hydroxylated aluminum oxide composition which optionally can contain metallic, non-metallic and metalloid elements substituting for a part of the aluminum while retaining the aluminum oxide composition as mesostructured, having at least one resolved X-ray

[ We claim:] [1.] A synthetic mesostructured hydroxylated aluminum oxide composition which optionally can contain metallic, non-metallic and metalloid elements substituting for a part of the aluminum while retaining the aluminum oxide composition as mesostructured, having at least one resolved X-ray diffraction peak corresponding to a basal spacing of at least 3.0 nm, framework confined pores at least 1.5 nm in diameter and a specific surface area of at least 150 m g prepared from an inorganic precursor of alumina and a pore forming nonionic surfactant in the absence of an aluminum alkoxide and the composition is thermally stable at 800.degree. C. so that a calcined mesostructured aluminum oxide composition is maintained.