Ion-exchange property and mechanism of magnesium–calcium hydroxyapatite solid solutions

2004 ◽  
Vol 238 (1-3) ◽  
pp. 133-139 ◽  
Author(s):  
Akemi Yasukawa ◽  
Takashi Yokoyama ◽  
Kazuhiko Kandori ◽  
Tatsuo Ishikawa
Keyword(s):  
Ion Exchange ◽  
Solid Solutions ◽  
Calcium Hydroxyapatite ◽  
Exchange Property

Magnetic Ion Exchange Interactions in NiO—MgO Solid Solutions

ChemInform ◽  
2006 ◽  
Vol 37 (21) ◽  
Author(s):  
N. Mironova-Ulmane ◽  
V. Skvortsova ◽  
A. Kuzmin ◽  
U. Ulmanis ◽  
I. Sildos ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Solid Solutions ◽  
Exchange Interactions ◽  
Magnetic Ion

The Synthesis and Ion-Exchange Property of Inorganic Material Mg1.5Mn0.5Ti0.75O4

2012 ◽  
Vol 511 ◽  
pp. 105-108
Author(s):  
Jin He Jiang
Keyword(s):  
Ion Exchange ◽  
Inorganic Material ◽  
Exchange Capacity ◽  
Exchange Property ◽  
Insertion Reaction ◽  
Ion Exchange Capacity ◽  
X Ray ◽  
Thermal Crystallization ◽  
Crystallization Method ◽  
Saturation Capacity

Mg1.5Mn0.5Ti0.75O4 was prepared by a coprecipitation/thermal crystallization method. The extraction/insertion reaction with this material was investigation by X-ray, saturation capacity of exchange, and Kd measurement. The acid treatments of Mg1.5Mn0.5Ti0.75O4 caused Mg2+ extractions of more than 72%, while the dissolutions of Mn4+ and Ti4+ were less than 8.2%. The results showed that the Li+ extraction/insertion be progressed mainly by an ion-exchange mechanism. The acid treated samples had an ion exchange capacity of 10.6mmol/g for Li+.

[CH3 NH3 ]4 Ga4 SbS9 S0.28 O0.72 H: A Three-Dimensionally Open-Framework Heterometallic Chalcogenidoantimonate Exhibiting Ni2+ Ion-Exchange Property

2018 ◽  
Vol 13 (6) ◽  
pp. 672-678 ◽  
Author(s):  
Bo Zhang ◽  
Wei-An Li ◽  
Yi-Yu Liao ◽  
Chen Zhang ◽  
Mei-Ling Feng ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Exchange Property ◽  
Open Framework

scholarly journals The Li+, Na+ and K+ ion exchange reaction process on the surface of mixed oxide SiO2/TiO2/Sb2O5 surface prepared by the sol-gel processing method

2005 ◽  
Vol 30 (1) ◽  
pp. 51-58 ◽  
Author(s):  
C. U. Ferreira ◽  
J. E. Gonçalves ◽  
Y. V. Kholin ◽  
Y. Gushikem
Keyword(s):  
Ion Exchange ◽  
Mixed Oxide ◽  
Exchange Process ◽  
Sol Gel ◽  
Exchange Capacity ◽  
Processing Method ◽  
Exchange Property ◽  
Ion Exchange Process ◽  
Ion Exchange Reaction ◽  
Gel Processing

The porous mixed oxide SiO2/TiO2/Sb2O5 obtained by the sol-gel processing method presented a good ion exchange property and a high exchange capacity towards the Li+, Na+ and K+ ions. In the H+/M+ ion exchange process, the H+ / Na+ could be described as presenting an ideal character. The ion exchange equilibria of Li+ and K+ were quantitatively described with the help of the model of fixed tetradentate centers. The results of simulation evidence that for the H+ / Li+ exchange the usual situation takes place: the affinity of the material to the Li+ ions is decreased with increasing the degree of ion exchange. On the contrary, for K+ the effects of positive cooperativity, that facilitate the H+ / K+ exchange, were revealed.

Effect of Coal Property and Ratio of Acid to Coal on Ion Exchange Performance of Sulfonated Coal

2013 ◽  
Vol 807-809 ◽  
pp. 1493-1496 ◽  
Author(s):  
Qing Jie Tang ◽  
Jun Tao Xing ◽  
Li Peng Zhao ◽  
Bei Bei Gao
Keyword(s):  
Ion Exchange ◽  
Brown Coal ◽  
Raw Material ◽  
Lower Price ◽  
Exchange Property ◽  
Coal Quality ◽  
Exchange Performance ◽  
Coal Property ◽  
Exchange Properties

There are more advantage for Sulfonated coal such as lower price, materials widely, and stronger ion exchange performance. Sulfonated coal were prepared by huolinhe brown coal and shanxi anthracite as raw material, and the effect of coal quality, ratio of acid to coal on the ion exchange properties of sulfonated coal were studied. Results show that the brown coal is more advantageous to sulfonation reaction, the temperature is 120, sulfonated time is 9 h, and ratio of acid to coal is 5:1. Under the conditions, the ion exchange property of sulfonated coal is best.

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