Volume oxidation of uranium mononitride and uranium monocarbide in the dry NOx-gaseous atmosphere

被引：3
|
作者：
Kulyukhin, Sergey A. [1 ]
Nevolin, Yuri M. [1 ,2 ]
Petrov, Vladimir G. [2 ]
Kalmykov, Stepan N. [2 ]
机构：
[1] RAS, AN Frumkin Inst Phys Chem & Electrochem, 31-4 Leninsky Pr, Moscow 119071, Russia
[2] Lomonosov Moscow State Univ, Dept Chem, 1 Bld 3, Moscow 119991, Russia
来源：
RADIOCHIMICA ACTA | 2020年 / 108卷 / 07期
关键词：
Uranium carbide; Uranium nitride; Gas-phase conversion; Voloxidation; GAS-PHASE CONVERSION; SPENT NUCLEAR-FUEL; NITRIDE; HYDROLYSIS; BEHAVIORS; WATER; KINETICS; XPS; UN; SR;
D O I：
10.1515/ract-2019-3125
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Gaseous volume oxidation (voloxidation) of uranium mononitride (UN) and uranium monocarbide (UC) was investigated in the "NOx-air" atmosphere in the temperature range 298-673 K. It was shown that UN can be converted into uranium water-soluble compounds using an alternative oxidation atmosphere based on NOx-gases. UO3 and uranyl nitrates are the main products of the reaction. Maximum degree of the UN conversion to water-soluble compounds equal to 80% was observed at the temperature 565 K. Products of the UC conversion are uranium oxides and oxihydroxides. The observed degree of the UC conversion into water-soluble compounds was less then 20%.
引用
收藏
页码：535 / 542
页数：8
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