Preparation, structure, and ion-exchange properties of Na/sub 4/Ti/sub 9/O/sub 20/ x xH/sub 2/O
A sodium titanate, Na/sub 4/Ti/sub 9/O/sub 14/ x xH/sub 2/O, was synthesized at low temperatures (90-280/sup 0/C)by a reaction of either anatase of titanium isopropoxide with NaOH. Na/sub 4/Ti/sub 9/O/sub 20/ x xH/sub 2/O is a layered compound with an interlayer distance of 6.9 A in the anhydrous form, approx. 8.6 A in the metastable semihydrous form, and 10.0 A in the fully hydrated form. Regardless of its hydration state, this sodium titanate has an ion-exchange capacity of 4.74 meq/g of Na/sub 4/Ti/sub 9/O/sub 20/, and all the Na/sup +/ ions are exchangeable. When heated to 700/sup 0/C, Na/sub 4/Ti/sub 9/O/sub 20/ x xH/sub 2/O decomposes to a mixture of Na/sub 2/Ti/sub 3/O/sub 7/ and Na/sub 2/Ti/sub 6/O/sub 13/.
- Research Organization:
- Texas A and M Univ., College Station (USA)
- OSTI ID:
- 7160187
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 73:1; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400105 -- Separation Procedures
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DATA
EXPERIMENTAL DATA
HYDRATES
INFORMATION
ION EXCHANGE
ION EXCHANGE MATERIALS
MATERIALS
MOLECULAR STRUCTURE
NUMERICAL DATA
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SODIUM COMPOUNDS
SYNTHESIS
WASTES