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US 4,421,727 AGranted
NF.sub.4.sup.+ WF.sub.7.sup.- and NF.sub.4.sup.+ UF.sub.7.sup.- and methods of preparation
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsWilliam W. Wilson, Karl O. Christe
Life of this patent
Estimating the term…
Abstract
Salts of the formula NF.sub.4.sup.+ MF.sub.7.sup.- are produced by the fowing reaction NF.sub.4 HF.sub.2 nHF+MF.sub.6 .fwdarw.NF.sub.4 MF.sub.7 +(n+1)HF wherein M is uranium (U) or tungsten (W).
Claims8
NF.sub.4 UF.sub.7.
NF.sub.4 WF.sub.7.
A process or preparing NF.sub.4 UF.sub.7 comprising the following steps in order:
- (1) placing NF.sub.4 HF.sub.2.nHF into a reaction vessel;
- (2) adding an excess of UF.sub.6 to the reaction vessel;
- (3) allowing the UF.sub.6 to react with the NF.sub.4 HF.sub.2.nHF;
- (4) pumping off the volatile products of the reaction;
- and
- (5) repeating steps (2) through (4) until the NF.sub.4 HF.sub.2.nHF is substantially converted to NF.sub.4 UF.sub.7.
3 more elements
A process for preparing NF.sub.4 WF.sub.7 comprising the following steps in order:
- (1) placing NF.sub.4 HF.sub.2.nHF into a reaction vessel;
- (2) adding an excess of WF.sub.6 to the reaction vessel;
- (3) allowing the WF.sub.6 to react with the NF.sub.4 HF.sub.2.nHF;
- (4) pumping off the volatile products of the reaction;
- and
- (5) repeating steps (2) through (4) until the NF.sub.4 HF.sub.2.nHF is substantially converted to NF.sub.4 WF.sub.7.
3 more elements
Dependencies are inferred from the claim text.