초록 ▼

A process of modifying the porosity of an aluminosilicate or silica whose porosity is not amenable to modification by acid extraction. The process involves contacting said aluminosilicate or silica with an alkali aluminate, and then extracting the aluminate-treated material with an extraction agent

A process of modifying the porosity of an aluminosilicate or silica whose porosity is not amenable to modification by acid extraction. The process involves contacting said aluminosilicate or silica with an alkali aluminate, and then extracting the aluminate-treated material with an extraction agent so as to form the porosity-modified aluminosilicate or silica. The process is applicable to zeolites which are unreactive under acid extraction conditions, e.g. ferrierite, and applicable to zeolites which are structurally unstable under acid extraction conditions, such as the mineral bikitaite. Mesoporous compositions are disclosed, including a mesoporous ferrierite and a mesoporous zeolite DCM-3.

대표청구항 ▼

[ What is claimed is:] [1.] A process of preparing a porosity-modified aluminosilicate or silica, the process comprising contacting an aluminosilicate or silica, whose porosity is not amenable to modification by acid extraction, with alkali aluminate under reaction conditions sufficient to prepare a

[ What is claimed is:] [1.] A process of preparing a porosity-modified aluminosilicate or silica, the process comprising contacting an aluminosilicate or silica, whose porosity is not amenable to modification by acid extraction, with alkali aluminate under reaction conditions sufficient to prepare a porosity-modified aluminosilicate or silica precursor composition; and thereafter treating the porosity-modified aluminosilicate or silica precursor composition with an extraction agent under extraction conditions sufficient to prepare the porosity-modified aluminosilicate or silica.