Reactions of Neptunium(V) in Alkali-Metal Hydroxides

2021 ◽  
Author(s):  
Richard E. Wilson ◽  
Samantha Stegman ◽  
Michael L. Tarlton
Keyword(s):  
Alkali Metal ◽  
Metal Hydroxides ◽  
Alkali Metal Hydroxides

Structure of aqueous dioxane solutions of alkali metal hydroxides according to PMR data

1980 ◽  
Vol 21 (2) ◽  
pp. 162-167
Author(s):  
N. G. Dovbysh ◽  
Yu. A. Volokhov ◽  
V. B. Lebedev ◽  
V. M. Sizyakov ◽  
V. E. Mironov
Keyword(s):  
Alkali Metal ◽  
Aqueous Dioxane ◽  
Metal Hydroxides ◽  
Alkali Metal Hydroxides

The dissolution of beryllia in molten alkali metal hydroxides

1965 ◽  
Vol 18 (11) ◽  
pp. 1719 ◽  
Author(s):  
ME Shying ◽  
RB Temple
Keyword(s):  
Alkali Metal ◽  
Water Vapour ◽  
Beryllium Oxide ◽  
Major Product ◽  
Kcal Mole ◽  
Metal Hydroxides ◽  
Temperature Range ◽  
Alkali Metal Hydroxides ◽  
Reversible Formation

Beryllium oxide shows a limited reversible solubility in molten alkali-metal hydroxides only when dissolved water vapour is present. The reaction taking place has been studied in detail. The results obtained are consistent with the reversible formation of the beryllate ion [Be(OH)4]2- as the major product, according to the overall equation BeO(solid) + H2O(dissolved) + 2OH- ↔ [Be(OH)4]2-(dissolved) The enthalpy of the reaction has been calculated to be 4.8 kcal/mole over the temperature range 240-510�.

Application of Alkali Metal Hydroxides for the Preparation of gem‐Chlorophenylcyclopropanes

2006 ◽  
Vol 36 (23) ◽  
pp. 3571-3579 ◽  
Author(s):  
Andrzej Jończyk ◽  
Hanna Karwowska ◽  
Jolanta Furman
Keyword(s):  
Alkali Metal ◽  
Metal Hydroxides ◽  
Alkali Metal Hydroxides

Studies on swelling of cotton fibers in alkali metal hydroxides. II. Influence of morphology and fine structure on tensile behavior

1989 ◽  
Vol 37 (7) ◽  
pp. 1739-1752 ◽  
Author(s):  
P. Bhama Iyer ◽  
S. Sreenivasan ◽  
G. S. Patel ◽  
P. K. Chidambareswaran ◽  
N. B. Patil
Keyword(s):  
Fine Structure ◽  
Alkali Metal ◽  
Tensile Behavior ◽  
Cotton Fibers ◽  
Metal Hydroxides ◽  
Alkali Metal Hydroxides

Investigation of Hydrogen Solubility in Molten Alkali Metal Hydroxides

1955 ◽  
Vol 77 (7) ◽  
pp. 2023-2024 ◽  
Author(s):  
Edward A. Sullivan ◽  
Sidney Johnson ◽  
M. Douglas Banus
Keyword(s):  
Alkali Metal ◽  
Hydrogen Solubility ◽  
Metal Hydroxides ◽  
Alkali Metal Hydroxides

An infrared spectroscopic study of the interaction of nontronite and ferruginous montmorillonites with alkali metal hydroxides

Clay Minerals ◽  
1979 ◽  
Vol 14 (2) ◽  
pp. 127-137 ◽  
Author(s):  
J. D. Russell
Keyword(s):  
Alkali Metal ◽  
Ferric Iron ◽  
Hydroxyl Groups ◽  
Infrared Spectroscopic Study ◽  
Metal Hydroxides ◽  
Alkali Metal Hydroxides ◽  
Cell Dimensions ◽  
Striking Change ◽  
Hexagonal Hole ◽  
Stretching Vibrations

AbstractIR spectroscopy has been used to study the interaction of alkali metal hydroxides with dioctahedral smectites having iron contents of 0·7% (montmorillonite) to 22% (nontronite), in connection with the alkali-stabilization of soils. The results have shown that the alkalis (LiOH, NaOH, KOH and CsOH) deprotonate hydroxyl groups co-ordinated to octahedral ferric iron, causing distortion of tetrahedral and octahedral layers. This concept of distortion is supported by a striking change in Mössbauer spectra and a large increase in b cell dimensions. The perturbation of the smectite structure, shown by shifts in the Si-O and O-H stretching vibrations, is greater for Na, K and Cs than for Li, suggesting that the larger cations interact with surface oxygens around the hexagonal hole. IR spectra suggest that the effect of NaOH on nontronite is substantially reversed by treating the smectite with CO2 or acetic acid vapour or by washing it with dilute salt solution, although Mössbauer spectroscopy and XRD indicate that the structure of the regenerated smectite is more disordered than that of the original.

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