Methods of reducing uranium hexafluoride

Galkin, N.P.; Sudarikov, B.N.; Zaitsev, V. A.

doi:10.1007/bf01480220

Cited by 3 publications

(2 citation statements)

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“…In the ammonolysis of uranium fluorides [ 35 , 36 ], just as in the synthesis from metal, no carbon or oxygen compounds feature in the reaction, which allows a very high degree of purity of the product. Whether the starting material be UF 6 or UF 4 is not critical for the process, since the first step of reaction of ammonia with UF 6 is reduction of the uranium to tetravalent shape, forming an adduct of UF 4 and ammonium hydrogen fluoride NH 4 F [ 37 ]: …”

Section: Productionmentioning

confidence: 99%

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Nitride fuel for Gen IV nuclear power systems

Ekberg

Costa

Hedberg

et al. 2018

J Radioanal Nucl Chem

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Nuclear energy has been a part of the energy mix in many countries for decades. Today in principle all power producing reactors use the same techniqe. Either PWR or BWR fuelled with oxide fuels. This choice of fuel is not self evident and today there are suggestions to change to fuels which may be safer and more economical and also used in e.g. Gen IV nuclear power systems. One such fuel type is the nitrides. The nitrides have a better thermal conductivity than the oxides and a similar melting point and are thus have larger safety margins to melting during operation. In addition they are between 30 and 40% more dense with respect to fissile material. Drawbacks include instability with respect to water and a sometimes complicated fabrication route. The former is not really an issue with Gen IV systems but for use in the present fleet. In this paper we discuss both production and recycling potential of nitride fuels.

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Section: Productionmentioning

confidence: 99%

“…The reaction is spontaneous at 100–200 °C, and the product can if so desired be decomposed to pure UF 4 and NH 4 F by further heating to 500 °C [ 37 ], although this is unnecessary for the continued nitride synthesis.…”

Section: Productionmentioning

confidence: 99%