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Clarification Procedure for GelsProcedure developed to obtain transparent gels with consistencies suitable for crystal growth, by replacing sodium ions in silicate solution with potassium ions. Clarification process uses cation-exchange resin to replace sodium ions in stock solution with potassium ions, placed in 1M solution of soluble potassium salt. Slurry stirred for several hours to allow potassium ions to replace all other cations on resin. Supernatant solution decanted through filter, and beads rinsed with distilled water. Rinsing removes excess salt but leaves cation-exchange beads fully charged with potassium ions.
Document ID
19870000398
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Barber, Patrick G. (Longwood College)
Simpson, Norman R. (Longwood College)
Date Acquired
August 13, 2013
Publication Date
September 1, 1987
Publication Information
Publication: NASA Tech Briefs
Volume: 11
Issue: 8
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
LAR-13476
Accession Number
87B10398
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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