» » Uranium (VI-OXYGEN CHEMISTRY : URANYL HYDROXO COMPLEXES, URANATES, OXIDES)
Download Uranium (VI-OXYGEN CHEMISTRY : URANYL HYDROXO COMPLEXES, URANATES, OXIDES) djvu

Download Uranium (VI-OXYGEN CHEMISTRY : URANYL HYDROXO COMPLEXES, URANATES, OXIDES) djvu

by Vaclav Baran

Author: Vaclav Baran
Subcategory: Chemistry
Language: English
Publisher: Hadronic Pr (September 1, 1994)
Pages: 135 pages
Category: Math and Science
Rating: 4.8
Other formats: lrf lrf txt lrf

Uranium oxide is an oxide of the element uranium. The metal uranium forms several oxides: Uranium dioxide or uranium(IV) oxide (UO2, the mineral uraninite or pitchblende). Diuranium pentoxide or uranium(V) oxide (U2O5). Uranium trioxide or uranium(VI).

Uranium oxide is an oxide of the element uranium. Uranium trioxide or uranium(VI) oxide (UO3). Triuranium octoxide (U3O8), the most stable uranium oxide; yellowcake typically contains 70 to 90 percent triuranium octoxide). Uranyl peroxide (UO2O2 or UO4). Uranium dioxide is oxidized in contact with oxygen to form triuranium octoxide.

ISBN 10: 0911767622 ISBN 13: 9780911767629. Publisher: Hadronic Pr, 1994.

Uranium (VI)-Oxygen Chemistry, Uranyl Hydroxo Complexes, Uranates, and Oxides

Uranium (VI)-Oxygen Chemistry, Uranyl Hydroxo Complexes, Uranates, and Oxides. Prototype Tests for the Recovery and Conversion of UF6 Chemisorbed in NaF Traps for the Molten Salt Reactor Remediation Project. A procedure has been evolved which enables uranium to be determined without chemical separation in solutions containing iron, plutonium, nitrate and many other foreign ions, which interfere in conventional redox methods. All of the operations needed are carried out in one vessel, in the cold. The uranium atom in uranates(VI) has two short collinear U–O bonds and either four or six more next nearest oxygen atoms. Uranyl nitrate (UO2(NO3)2) is a water soluble yellow uranium salt. The yellow-green crystals of dioxouranium nitrate hexahydrate are triboluminescent. Triuranium octoxide (U3O8) is a compound of uranium. It is present as an olive green to black, odorless solid. It is one of the more popular forms of yellowcake and is shipped between mills and refineries in this form.

A uranate is a ternary oxide involving the element uranium in one of the oxidation states +4, +5 or +6. A typical chemical formula is. . A typical chemical formula is MxUyOz, where M represents a cation. The uranium atom in uranates(VI) has two short, co-linear, U-O bonds and either four or six more next nearest oxygen atoms. Ammonium diuranate" is an intermediate in the production of uranium oxide nuclear fuels.

Redirected from Uranyl oxide). Uranium trioxide (UO3), also called uranyl oxide, uranium(VI) oxide, and uranic oxide, is the hexavalent oxide of uranium. The solid may be obtained by heating uranyl nitrate to 400 °C. Its most commonly encountered polymorph, γ-UO3, is a yellow-orange powder. There are three methods to generate uranium trioxide.

The uranium(VI) peroxo complexes containing Mannich base ligands having composition {where L-L morpholinobenzyl acetamide (MBA), piperidinobenzyl acetamide (PBA), morpholinobenzyl benzamide.

The uranium(VI) peroxo complexes containing Mannich base ligands having composition {where L-L morpholinobenzyl acetamide (MBA), piperidinobenzyl acetamide (PBA), morpholinobenzyl benzamide (MBB), piperidinobenzyl benzamide (PBB), morpholinomethyl benzamide (MMB), piperidinomethyl benzamide (PMB), morpholinobenzyl formamide (MBF)}, piperidinobenzyl formamide (PBF) are reported

Sinterable-grade uranium oxide powder is prepared either by the integrated dry route (IDR) starting with UF6 or by.

Sinterable-grade uranium oxide powder is prepared either by the integrated dry route (IDR) starting with UF6 or by employing the wet chemical routes starting with magnesium diuranate (MDU) or UF6. The most common wet routes are based on ammonium diuranate (ADU) and ammonium uranyl carbonate (AUC) processes. However, when the deposits contain uranium fluoride hydrolysis products such as uranyl fluoride UO2F2 and its hydrates, removal of these deposits with IF7 alone is less than complete.

31 Uranium-oxygen A number of binary uranium-oxygen compounds UO Solid UO unstable, NaCl structure From UO2 . Some influence of metal on uranyl oxygen bond length Lanthanide oxides form solid solutions Can form Ln6UO12.

31 Uranium-oxygen A number of binary uranium-oxygen compounds UO Solid UO unstable, NaCl structure From UO2 heated with U metal Carbon promotes reaction, formation of UC UO2 Reduction of UO3 or U3O8 with H2 from 800 ºC to 1100 ºC CO, C, CH4, or C2H5OH can be used as. reductants O2 presence responsible for UO2+x formation Large scale preparation UO4, (NH4)2U2O7, or (NH4)4UO2(CO3)3 Calcination in air at ºC H2 at ºC UO2has high surface area.

The author begins by summing up the results of 150 years of research on uranyl, up to 1991. Topics include history of uranyl ion and uranyl hydroxo complexes, hydrolysis of uranyl in aqueous solutions, hydrolytic precipitate, relationship of precipitated uranates to other types of urinates, and uranium (VI) oxides. No index. Annotation copyright Book News, Inc. Portland, Or.