Published 2006 | Version v1
Journal article Metadata-only

Interaction of metallic uranium with NO2 in TBP medium

Creators

  • 1. Vserossijskij Nauchno-Issledovatel'skij Inst. Khimicheskoj Tekhnologii, Moscow (Russian Federation)

Description

The process of low-temperature waterless nitration of metallic uranium in TBP-tetrachloroethylene-NO2 medium is studied. It is determined that dissolution of uranium in the medium of dipolar aproton solvent (TBP, dimethyl formamide, acetonitrile, nitromethane, DMSO, diethyl formamide) takes place with formation of U(VI) compounds. Activation energy of the process (48.2 kJ/mol) and relative reaction order by NO2 (1) are calculated. Effect of TBP concentration and water additions on the nitration process is studied. It is determined that the nitration rate is maximal when water content in the TBP-tetrachloroethylene system is 1.0-2.0 vol.%

Abstract (Russian)

Изучен процесс низкотемпературного неводного нитрования металлического урана в системе ТБФ-тетрахлорэтилен-NO2. Установлено, что растворение урана в среде диполярного апротонного растворителя (ТБФ, ДМФА, ацетонитрил, нитрометан, ДМСО, диэтилформамид) протекает с образованием соединений U(VI). Рассчитаны энергия активации процесса (48.8 кДж/моль) и относительный порядок реакции по NO2 (1). Изучено влияние концентрации ТБФ и добавок воды на процесс нитрования. Установлено, что скорость нитрования максимальна при содержании воды в системе ТБФ-тетрахлорэтилен 1.0-2.0 об.%

Additional details

Additional titles

Original title (Russian)
Взаимодействие металлического урана с NO

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
48
Journal Issue
5
Journal Page Range
p. 409-411
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
38038641
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
ACETONITRILE; ACTIVATION ENERGY; AMIDES; CHAIN REACTIONS; CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; DMSO; NITROGEN DIOXIDE; NITROMETHANE; ORGANIC CHLORINE COMPOUNDS; ORGANIC SOLVENTS; TBP; URANIUM
Descriptors DEC
ACTINIDES; BUTYL PHOSPHATES; CHALCOGENIDES; CHEMICAL EXPLOSIVES; DIMENSIONLESS NUMBERS; ELEMENTS; ENERGY; ESTERS; EXPLOSIVES; KINETICS; METALS; NITRILES; NITRO COMPOUNDS; NITROGEN COMPOUNDS; NITROGEN OXIDES; NONAQUEOUS SOLVENTS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; REACTION KINETICS; SOLVENTS; SULFOXIDES

Optional Information

Notes
7 refs., 6 figs.