Preparation of 1-2-3 yttrium-barium-copper salt of carboxylated cellulose
- Belorussian State Univ., Minsk (Belarus)
A procedure is developed for preparing an organometallic precursor, yttrium-barium-copper salt of carboxylated cellulose with an yttrium-barium-copper molar ratio of 1:2:3, for the synthesis of a high-temperature superconductor. This procedure comprises the preparation of a barium salt of carboxylated cellulose with a definite substitution degree, followed by the sorption of yttrium and copper ions by this salt from the combined solution. A convenient formula has been proposed for calculation of the composition of the solution, assuring the stoichiometric sorption of copper and yttrium ions by the barium salt. The formula is based on the fact that the degree of barium substitution depends only on ionic strength and is independent of an equivalent fraction of any component of the solution. This procedure has been extended to carboxylated celluloses with various exchange capacities.
- OSTI ID:
- 54507
- Journal Information:
- Russian Journal of Applied Chemistry, Journal Name: Russian Journal of Applied Chemistry Journal Issue: 8 Vol. 66; ISSN 1070-4272; ISSN RJACEO
- Country of Publication:
- United States
- Language:
- English
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