Ion exchange behaviour of polymeric zirconium cations

1989 ◽  
Vol 120 (12) ◽  
pp. 1091-1094 ◽  
Author(s):  
Eshrat Fakhari ◽  
Thomas Sch�nfeld
Keyword(s):  
Ion Exchange ◽  
Exchange Behaviour

Intermediate-stage transition metal ion exchange in a zeolite X

1982 ◽  
Vol 35 (7) ◽  
pp. 1335 ◽  
Author(s):  
M Chatterjee ◽  
D Ganguli
Keyword(s):  
Ion Exchange ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Intermediate Stage ◽  
Transition Metal Ions ◽  
Zeolite X ◽  
Counter Ions ◽  
Metal Ion Exchange ◽  
Exchange Behaviour

The exchange behaviour of some divalent transition metal ions M2+ (Zn2+, Cu2+, Ni2+, Co2+, Mn2+) in a zeolite NaX (SiO2/Al2O3 2.75) was studied at intermediate stages before equilibrium. The equivalent counter ion supply in the solution, given by the equivalent ratio of the two counter ions 2M2+/Na+, was found to be critical in determining the saturation level of exchange. The series of relative abilities of exchange was very similar to the well known selectivity series at equilibrium. It is suggested that water exchange of the metal ions in solution could be one of the factors controlling the relative ease of ion exchange.

Ion-exchange behaviour of copper ferricyanide

1982 ◽  
Vol 75 (1-2) ◽  
pp. 85-95 ◽  
Author(s):  
Ajay K. Jain ◽  
Raj Pal Singh ◽  
Chand Bala
Keyword(s):  
Ion Exchange ◽  
Exchange Behaviour

The Ion-exchange Behaviour of Beryllium Salicylate Complexes

1963 ◽  
Vol 16 (3) ◽  
pp. 376
Author(s):  
HJ de Bruin ◽  
JJ Fardy ◽  
RB Temple
Keyword(s):  
Ionic Strength ◽  
Ion Exchange ◽  
Stability Constants ◽  
Conditional Stability ◽  
Conditional Stability Constants ◽  
Exchange Behaviour ◽  
Chelate Rings

The beryllium/salicylate system has been re-examined by ion-exchange procedures. The results appear to confirm the existence of a neutral 1 : 1 and an anionic 1 : 2 complex, in both of which the salicylate radicals form chelate rings. Conditional stability constants have been measured at 25�C at an ionic strength of 0.15, the values obtained being ������������� β1 = 4.97 x 1012, and β2 = 2.63 x 1022.

Ion exchange behaviour of crystalline niobium antimonate towards alkali metal ions

1978 ◽  
Vol 40 (3) ◽  
pp. 545-547 ◽  
Author(s):  
J.P. Gupta ◽  
D.V. Nowell ◽  
M. Qureshi ◽  
A.P. Gupta
Keyword(s):  
Ion Exchange ◽  
Alkali Metal ◽  
Metal Ions ◽  
Alkali Metal Ions ◽  
Exchange Behaviour

scholarly journals Isolation and partial characterization of methylated arginines from the encephalitogenic basic protein of myelin

1971 ◽  
Vol 123 (1) ◽  
pp. 69-74 ◽  
Author(s):  
G. S. Baldwin ◽  
P. R. Carnegie
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Ion Exchange ◽  
Human Brain ◽  
Conformational Changes ◽  
Basic Protein ◽  
The Central Nervous System ◽  
Derivatives Of ◽  
Exchange Behaviour

Two methylated derivatives of arginine were isolated from the encephalitogenic protein of myelin from the central nervous system. Evidence is presented for the proposed structures, ω-NN′-dimethylarginine and ω-N-monomethylarginine. In the encephalitogenic protein from human brain the proportion 1:6:10 for arginine:monomethylarginine:dimethylarginine residues was found to occur at position 107. Possible roles for the methylated arginine in conformational changes and altered ion-exchange behaviour are discussed.

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