The surface properties of precipitated alumina. I. Preparation of active samples and determination of nitrogen adsorption isotherms

Wiley - Tập 5 Số 5 - Trang 223-227 - 1955
Michael Harris1, K. S. W. Sing1
1Department of Chemistry Royal Technical College Salford, 5

Tóm tắt

AbstractAlumina precipitates have been prepared by treating sodium hydroxide with either aluminium chloride, or sulphate, at pH 5. Adsorption isotherms of nitrogen, determined at −196°on the outgassed products, were all of reversible S‐type, characteristic of physical adsorption on non‐porous solids. Surface areas have been calculated by the usual Brunauer, Emmett & Teller method and related to the conditions of precipitation and subsequent washing.In this preliminary study, products showing very high surface areas were obtained from aluminium chloride by precipitating alumina in the presence of acetate buffer and washing finally with ethanol.

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Tài liệu tham khảo

10.1021/ie50410a002

10.1021/j150487a015

Weiser H. B., 1942, Advances in Colloid Science, 228

Brunauer S., 1945, The Adsorption of Gases & Vapours

Cassidy H. G., 1951, Adsorption & Chromatography, 178

10.1021/j150498a026

10.1039/an9527701000

10.1021/ie50377a029

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Wiley

Tập 5 Số 5

223-227

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