scholarly journals Ion Exchange in Concentrated Solutions. III. Magnesium Chloride-Hydrochloric Acid and Aluminum Chloride-Hydrochloric Acid Systems

1958 ◽  
Vol 31 (4) ◽  
pp. 445-450 ◽  
Author(s):  
Hitoshi Ohtaki ◽  
Kazuo Yamasaki
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Aluminum Chloride ◽  
Magnesium Chloride ◽  
Concentrated Solutions

Ion Exchange Recovery of Platinum(IV) from Hydrochloric Acid Solutions in the Presence of Silver(I)

2020 ◽  
Vol 94 (4) ◽  
pp. 828-834
Author(s):  
O. N. Kononova ◽  
E. V. Duba ◽  
A. S. Efimova ◽  
A. I. Ivanov ◽  
A. S. Krylov
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions

Enzymatische und nicht-enzymatische Darstellung von „Thiaminpyrophosphataktiviertem Glykolaldehyd“

1967 ◽  
Vol 22 (4) ◽  
pp. 407-412 ◽  
Author(s):  
F. Pohlandt ◽  
G. Kohlhaw ◽  
H. Holzer
Keyword(s):  
Ion Exchange ◽  
Magnesium Chloride ◽  
Enzymatic Reaction ◽  
Ion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Thiamine Pyrophosphate ◽  
Pyruvate Oxidase ◽  
Great Excess

1. A reaction mixture, made from pig heart pyruvate oxidase, hydroxypyruvate, thiamine pyrophosphate, and magnesium chloride, is described in which thiamine pyrophosphate is almost quantitatively converted into 2-(1,2-dihydroxyethyl)-thiamine pyrophosphate (thiamine pyrophosphate-activated glycolaldehyde). This product can be isolated by ion exchange chromatography.2. 2-(1,2-dihydroxyethyl)-thiamine pyrophosphate can also be isolated from reaction mixtures of yeast transketolase with hydroxypyruvate, thiamine pyrophosphate, and magnesium chloride, but in very low yield.3. From non-enzymatic reaction mixtures containing thiamine pyrophosphate and a great excess of glycolaldehyde, a compound could be isolated, the tested properties of which were found to be the same as those of enzymatically prepared 2-(1,2-dihydroxyethyl)-thiamine pyrophosphate.4. 2-(1,2-dihydroxyethyl)-thiamine pyrophosphate gives rise to only 55% of the thiochrome which is produced from the same quantity of thiamine pyrophosphate. This behaviour can be used for the determination of relative concentrations of thiamine pyrophosphate and 2-(1,2-dihydroxyethyl)-thiamine pyrophosphate in mixtures.

Preconcentration of Trace Elements by Precipitation Ion Exchange Using Organic-Hydrochloric Acid.

1965 ◽  
Vol 37 (12) ◽  
pp. 1565-1568 ◽  
Author(s):  
R. R. Ruch ◽  
Fouad. Tera ◽  
G. H. Morrison
Keyword(s):  
Trace Elements ◽  
Hydrochloric Acid ◽  
Ion Exchange

scholarly journals Ion Exchange Properties of a Terpolymer Resin Derived from 2, 4-Dihydroxybenzaldehyde, Oxamide and Formaldehyde

2009 ◽  
Vol 6 (3) ◽  
pp. 639-650 ◽  
Author(s):  
M. V. Tarase ◽  
W. B. Gurnule ◽  
A. B. Zade
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Metal Ions ◽  
Metal Ion ◽  
Polymer Sample ◽  
Equilibrium Method ◽  
Wide Ph Range ◽  
Ph Range ◽  
Exchange Properties

Terpolymer resins (2,4-DHBOF) were synthesized by the condensation of 2,4-dihydroxybenzaldehyde and oxamide with formaldehyde in the presence of hydrochloric acid as catalyst, proved to be selective chelation ion exchange terpolymer resins for certain metals. Chelation ion exchange properties of these polymers were studied for Fe+3, Cu+2, Hg+2, Cd+2, Co+2, Zn+2, Ni+2and Pb+2ions. A batch equilibrium method was employed in the study of the selectivity of the distribution of a given metal ions between the polymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in a media of various ionic strengths. The polymer showed a higher selectivity for Fe+3, Cd+2and Co+2ions than for Cu+2, Hg+2, Zn+2, Ni+2and Pb+2ions.

Kinetics of leaching fluoride from mixed rare earth concentrate with hydrochloric acid and aluminum chloride

2013 ◽  
Vol 140 ◽  
pp. 71-76 ◽  
Author(s):  
Mei Li ◽  
Xiaowei Zhang ◽  
Zhaogang Liu ◽  
Yanhong Hu ◽  
Mitang Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Hydrochloric Acid ◽  
Aluminum Chloride ◽  
Kinetics Of
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