A High-Performance Aluminum Oxide Desiccant

A study is performed of the effect of the conditions of preparation (the nature and amount of alkali used to hydrate a gibbsite thermal activation product and the amount of nitric acid (acid modulus value) in preparing a moldable paste) on the properties of aluminum oxide desiccants. A desiccant is...

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Bibliographic Details
Published inCatalysis in industry Vol. 12; no. 3; pp. 169 - 175
Main Authors Kruglyakov, V. Yu, Glazyrin, A. V., Meshcheryakov, E. P., Kurzina, I. A., Isupova, L. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2020
Springer Nature B.V
Subjects
Aluminum
Aluminum oxide
Bayer process
Catalysis
Chemistry
Chemistry and Materials Science
Desiccants
General Problems of Catalysis
Gibbsite
Nitric acid
Regeneration
Sorbents
aluminum oxide
desiccant
alkaline modification
dynamic capacity
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Summary:A study is performed of the effect of the conditions of preparation (the nature and amount of alkali used to hydrate a gibbsite thermal activation product and the amount of nitric acid (acid modulus value) in preparing a moldable paste) on the properties of aluminum oxide desiccants. A desiccant is obtained that has higher dynamic capacity (more than 10.0 g/100 g) at close specific surface values of around 300 m 2 /g and higher static capacity (20–22 g/100 g) than foreign and Russian analogues. The desiccant has high strength of more than 8.0 MPa. Such a desiccant can improve the productivity of existing adsorbers and reduce the cost of sorbent regeneration, which is of undoubted practical interest.
ISSN:2070-0504
2070-0555
DOI:10.1134/S2070050420030083