An Examination of Ion Exchange in Powdered Mixtures of Alkali Halides and Some Organic Acids, Using Infrared Spectroscopy

1976 ◽  
Vol 30 (4) ◽  
pp. 465-467
Author(s):  
B. Cleverley
Keyword(s):  
Infrared Spectroscopy ◽  
Ion Exchange ◽  
Organic Acids ◽  
Alkali Halides

Equilibrium and dynamic investigations of organic acids adsorption onto ion-exchange resins

2004 ◽  
Vol 26 (3) ◽  
pp. 185-190 ◽  
Author(s):  
S. Ledakowicz ◽  
T. Jamroz ◽  
B. Sencio ◽  
P. Gluszcz
Keyword(s):  
Ion Exchange ◽  
Organic Acids ◽  
Ion Exchange Resins ◽  
Exchange Resins

Infrared spectroscopy of ion exchange resins: chemical deterioration of the resins

2002 ◽  
Vol 53 (2-3) ◽  
pp. 157-171 ◽  
Author(s):  
Andrei A. Zagorodni ◽  
Diana L. Kotova ◽  
Vladimir F. Selemenev
Keyword(s):  
Infrared Spectroscopy ◽  
Ion Exchange ◽  
Ion Exchange Resins ◽  
Exchange Resins

Determination of the Composition in Sugars and Organic Acids in Peach Using Mid Infrared Spectroscopy: Comparison of Prediction Results According to Data Sets and Different Reference Methods

2013 ◽  
Vol 85 (23) ◽  
pp. 11312-11318 ◽  
Author(s):  
Sylvie Bureau ◽  
Bénédicte Quilot-Turion ◽  
Véronique Signoret ◽  
Christel Renaud ◽  
Mickael Maucourt ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Organic Acids ◽  
Data Sets ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Reference Methods

Characterization of Three 'Active' Rhodium(III) Hydroxides

1995 ◽  
Vol 48 (3) ◽  
pp. 557 ◽  
Author(s):  
SJ Crimp ◽  
L Spiccia
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
Infrared Spectroscopy ◽  
Ion Exchange ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
X Ray Diffraction ◽  
X Ray

Pure solutions of [ Rh (H2O)6]3+, dimer [Rh2(μ-OH)2(H2O)8]4+ and trimer [Rh3(μ-OH)4(H2O)10]5+ have been converted into their respective 'active' hydroxides by dropwise addition to an imidazole solution. These 'active' hydroxides have been analysed by a variety of techniques including rhodium determination, infrared spectroscopy, thermal analysis and powder X-ray diffraction. Purity determinations using ion-exchange chromatography showed that the three hydroxides consist primarily of the neutral forms of the starting aqua ion (>96%) with small amounts of species with higher nuclearity. Rhodium analysis and thermogravimetric measurements confirmed the composition of these hydroxides to be Rh (OH)3(H2O)3.H2O, Rh2(μ-OH)2(OH)4(H2O)4 and Rh3(μ-OH)4(OH)5(H2O)5.5H2O. A scheme for the thermal decomposition of each of the hydroxides has been proposed on the basis of the t.g . and d.t.a . data and the knowledge that the final product in each case is α-Rh2O3. Heating of the hydroxides in air resulted in oxidation of RhIII to RhIV (temperature 250-300°C) forming RhO2 which on further heating decomposed to α-Rh2O3 and dioxygen.

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