Super-microporous high-specific surface area aluminium oxide material and preparation method thereof

Abstract

The invention discloses a super-microporous high-specific surface area aluminium oxide material and a preparation method thereof, belongs to the field of preparation of inorganic pore materials and catalysts, and particularly relates to an super-microporous aluminium oxide material which has a high specific surface area and a high pore volume, and has a pore diameter between 1-2 nm, and a technical scheme of the preparation method thereof. The invention is characterized in that inexpensive nonionic surfactant (soft template) is adopted to prepare the super-microporous high-specific surface area aluminium oxide material which adopts a super-microporous structure, and the pore diameter is 1.0-2.0 nm, and the specific surface area exceeds 55 m<2> / g. The synthesis method comprises the following steps: according to a ratio of synthesis materials, solving the surface active agent, organic carboxylic acid and mineral acid in an ethanol solution with less deionized water, adding an aluminium source during mixing, performing mixing for some time, then allowing a reactant to be subjected to heat treatment so as to allow the solvent to be volatilized, and performing high-temperature roasting so as to obtain the super-microporous aluminium oxide material. The preparation technology is simple and convenient and feasible; the cost is low; industrial enlargement is easy; and the environment is protected.

Description

technical field [0001] The invention discloses an ultra-microporous alumina material with high specific surface area and a preparation method thereof, belonging to the field of preparation of inorganic porous materials and catalysts. Specifically, it relates to a technical proposal for an ultra-microporous alumina material with a high specific surface area and a pore volume, and a pore diameter ranging from 1 to 2 nm, and a preparation method thereof. Background technique [0002] Super-microporous molecular sieves generally refer to molecular sieve materials whose pore size is between the critical range of micropores and mesoporous pores, that is, in the range of 1.0-2.0nm. Ultramicroporous molecular sieves have important potential significance in industrial applications and scientific research, and have become the focus of many researchers in recent years. Many macromolecules with high commercial value are neither suitable for the use of existing microporous molecular sie...

AI Technical Summary

Problems solved by technology

[0004] The currently reported use of surfactant as a template, the alumina precursor obtained through the inorganic / organic interface in the solution, and then remove the template by calcination or solvent extraction The alumina porous materials obtained after the addition of dosing molecules, the synthesis routes are mostly complicated, the cost is high, and it is not easy to be scaled up or produced industrially.

And at present, there are few reports and applications of soft template synthesis of microporous alumina at home and abroad.

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