Processing alumina gels: Effects on surface area and pore volume

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Advanced Ceramic Materials; (USA)

DOI:https://doi.org/10.1111/j.1551-2916.1988.tb00193.x· OSTI ID:6109344

Lombardi, T; Klein, L C ^[1]

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1. Rutgers, The State Univ. of New Jersey, Piscataway (USA)

Twelve compositions in the system aluminum (sec)butoxide (ASB)-water-isopropanol were processed to obtain powders by a sol-gel method. All mixtures were hydrolyzed at 80{degree}C, half with nitric acid and half without. The effects of the water/ASB ratio and acid were noted in terms of surface area, pore size distribution, and pore volume. For a given ratio of water/ASB, the total pore volume and average pore radius were smaller in samples prepared with acid. These samples had narrower pore size distributions as well. For samples prepared with acid, an increase in the water/ASB ratio up to 25 showed a decrease in total pore volume. The pore volume remained fairly constant for ratios > 25 moles water/ASB. The average pore radius was largest for samples prepared with 10 moles water/ASB.

• OSTI ID: 6109344
• Journal Information: Advanced Ceramic Materials; (USA), Journal Name: Advanced Ceramic Materials; (USA) Vol. 3:2; ISSN 0883-5551; ISSN ACEME
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALUMINIUM COMPOUNDS
CHEMICAL PREPARATION
COLLOIDS
DATA
DISPERSIONS
EXPERIMENTAL DATA
GELS
INFORMATION
MEASURING METHODS
NUMERICAL DATA
POROSITY
SOL-GEL PROCESS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS