Preparation of High-purity Porous Alumina Carrier for Gas Sensor

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Fire Science and Engineering 1997;11(3):15-23.
Published online September 30, 1997.

가스센서용 고순도 다공질 알루미나 담체의 제조

이창우현성호함영민

¹단국대학교 공과대학 화학공학과²경민전문대학 소방안전관리과³단국대학교 공과대학 화학공학과

Preparation of High-purity Porous Alumina Carrier for Gas Sensor

Abstract

In this study, the alumina for gas sensor was prepared by anodic oxidation. It was stable thermally and chemically, and pore diameter and pore distribution was uniform. And the shape of pore was cylinderical. The aluminum plate was carried out by the thermal oxidation, chemical polishing and electropolishing pretreatment. The pore diameter, pore size distribution, pore density and thickness of alumina was observed with the change of reaction temperature, electrolyte concentration and current density. As a results, It was able to use for carrier because alumina which was prepared by anodic oxidationhas uniform pore size distribution.