초록

High surface area, wide-pore-containing porous alumina are prepared by mulling together alumina hydrogel and alpha alumina monohydrate, extruding, drying and calcining at 500°-700°C.

대표청구항 ▼

A process for preparing a high surface area, wide-pore containing, porous alumina material which comprises: (a) mulling an alpha alumina monohydrate with water and a peptizing agent, (b) separately preparing an alumina hydrogel by precipitating an aqueous solution of an acidic aluminum salt (excepti

A process for preparing a high surface area, wide-pore containing, porous alumina material which comprises: (a) mulling an alpha alumina monohydrate with water and a peptizing agent, (b) separately preparing an alumina hydrogel by precipitating an aqueous solution of an acidic aluminum salt (excepting aluminum sulfate) with a basic precipitating agent, (c) adding the hydrogel of step (b) to the mulled alumina of step (a) wherein the ratio, basis total Al2O3, of hydrogel to alumina monohydrate ranges from about 1 to about 50% by weight and mulling further the mixture, (d) extruding the mixture of (c), (e) drying the extrude, and (f) calcining at a temperature ranging from about 500°to about 700°C.