The preparation and characterization of alumina membranes with ultra-fine pores: Part 1. Microstructural investigations on non-supported membranes

A.F.M. Leenaars; K. Keizer; A.J. Burggraaf

doi:10.1007/BF01120016

The preparation and characterization of alumina membranes with ultra-fine pores: Part 1. Microstructural investigations on non-supported membranes

A.F.M. Leenaars^*, K. Keizer, A.J. Burggraaf

^*Corresponding author for this work

Inorganic Materials Science

Research output: Contribution to journal › Article › Academic › peer-review

301 Citations (Scopus)

Abstract

Alumina films less than 20 μm thick are prepared by a process in which a boehmite sol is successively gelled, dried and calcined. The resulting structure has the unique property that only ultra-fine pores with a narrow pore size distribution are present within large crack-free layers. The microstructure can be influenced by the sintering temperature and the acid concentration of the precursor sol. The minimum modal pore size which has been obtained is 2.5 nm. A consistent model of the microstructure of the membranes and an explanation of its uniformity are presented.

Original language	English
Pages (from-to)	1077-1088
Number of pages	12
Journal	Journal of materials science
Volume	19
Issue number	4
DOIs	https://doi.org/10.1007/BF01120016
Publication status	Published - 1 Apr 1984

Keywords

Polymer
Alumina
Microstructure
Pore size
Acid concentration

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10.1007/BF01120016

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abstract = "Alumina films less than 20 μm thick are prepared by a process in which a boehmite sol is successively gelled, dried and calcined. The resulting structure has the unique property that only ultra-fine pores with a narrow pore size distribution are present within large crack-free layers. The microstructure can be influenced by the sintering temperature and the acid concentration of the precursor sol. The minimum modal pore size which has been obtained is 2.5 nm. A consistent model of the microstructure of the membranes and an explanation of its uniformity are presented.",

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AU - Leenaars, A.F.M.

AU - Keizer, K.

AU - Burggraaf, A.J.

PY - 1984/4/1

Y1 - 1984/4/1

N2 - Alumina films less than 20 μm thick are prepared by a process in which a boehmite sol is successively gelled, dried and calcined. The resulting structure has the unique property that only ultra-fine pores with a narrow pore size distribution are present within large crack-free layers. The microstructure can be influenced by the sintering temperature and the acid concentration of the precursor sol. The minimum modal pore size which has been obtained is 2.5 nm. A consistent model of the microstructure of the membranes and an explanation of its uniformity are presented.

AB - Alumina films less than 20 μm thick are prepared by a process in which a boehmite sol is successively gelled, dried and calcined. The resulting structure has the unique property that only ultra-fine pores with a narrow pore size distribution are present within large crack-free layers. The microstructure can be influenced by the sintering temperature and the acid concentration of the precursor sol. The minimum modal pore size which has been obtained is 2.5 nm. A consistent model of the microstructure of the membranes and an explanation of its uniformity are presented.

KW - Polymer

KW - Alumina

KW - Microstructure

KW - Pore size

KW - Acid concentration

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ER -

The preparation and characterization of alumina membranes with ultra-fine pores: Part 1. Microstructural investigations on non-supported membranes

Abstract

Keywords

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