Ordered ceramic membranes: Annual progress report, February 1986-March 1987

Technical Report · Mon Jun 01 00:00:00 EDT 1987

OSTI ID:6162390

Anderson, M A; Hill, Jr, C G

Effort has focused on the solution variables that ultimately control the characteristics of the precursor sols, gels, and the ceramic membranes. We have succeeded in producing ''crack-free'' Al/sub 2/O/sub 3/ and TiO/sub 2/ unsupported ceramic membranes. The Al/sub 2/O/sub 3/ membranes are ''particulate'' whereas we have been preparing both polymeric and particulate TiO/sub 2/ unsupported membranes. These membranes have pore diameters in the 20 to 50 A range. Major variables in both cases include the alkoxide/water ratio and the initial time and temperature of the reaction. Ionic strength seems to be of lesser importance. Sintering conditions are also important in controlling the pore size. The TiO/sub 2/ membranes supported by glass substrates are photoactive and capable of degrading polychlorinated biphenyls in aqueous solution when exposed to uv irradiation. We have also been experimenting with two types of supporting materials for producing ceramic filters. Both clay and alumina precursors have yielded supports that had sufficient strength and porosity to be candidates for membrane supports.

• Research Organization: Wisconsin Univ., Madison (USA)
• DOE Contract Number: AS07-86ID12626
• OSTI ID: 6162390
• Report Number(s): DOE/ID/12626-T1; ON: DE87012714
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
POROSITY
PRODUCTION
FILTERS
SUPPORTS
MEMBRANES
TITANIUM OXIDES
CATALYTIC EFFECTS
CATALYST SUPPORTS
CERAMICS
CLAYS
FABRICATION
PARTICULATES
POLYMERS
POROUS MATERIALS
RESEARCH PROGRAMS
SINTERING
SLIP CASTING
ALUMINIUM COMPOUNDS
CASTING
CHALCOGENIDES
MATERIALS
MECHANICAL STRUCTURES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication