A note on automorphisms of the sphere complex

2014 ◽  
Vol 124 (2) ◽  
pp. 255-265
Author(s):  
SUHAS PANDIT
Keyword(s):  
Sphere Complex

scholarly journals Enhancing Arsenic Solidification/Stabilisation Efficiency of Metallurgical Slag-Based Green Mining Fill and Its Structure Analysis

Metals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1389
Author(s):  
Wei Gao ◽  
Zifu Li ◽  
Siqi Zhang ◽  
Yuying Zhang ◽  
Pingfeng Fu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Calcium Nitrate ◽  
Outer Sphere ◽  
High Specific Surface Area ◽  
Sodium Sulphate ◽  
Metallurgical Slag ◽  
Hydration Reaction ◽  
Mechanism Analysis ◽  
Low Carbon ◽  
Sphere Complex

To dispose of arsenic-containing tailings with low carbon and high efficiency, sodium sulphate (Na2SO4), sodium hydroxide (NaOH), calcium nitrate Ca(NO3)2 and calcium hydroxide Ca(OH)2 were independently added to metallurgical slag-based binder (MSB) solidification/stabilisation (S/S)-treated tailings (MSTs) to enhance the MST arsenic S/S performance. Results showed that only Ca(OH)2 could increase the unconfined compressive strength of MST from 16.3 to 20.49 MPa and decrease the leachate As concentration from 31 μg/L to below 10 μg/L. Na3AsO4·12H2O and NaAsO2 were used to prepare pure MSB paste for mechanism analysis. The results of microstructure analyses showed the high specific surface area and amorphous properties of calcium–sodium aluminosilicate hydrate facilitated the adsorption or solid-solution formation of As(V) and As(III). As(V) formed an inner-sphere complex in ettringite, whereas As(III) formed an outer-sphere complex, and the relatively larger size and charge of As(V) compared with SO42− restrict substitution inside channels without affecting the ettringite structure under high loading of As(V). The added Ca(OH)2 promoted the hydration reaction of MSBs and facilitated the formation of a Ca–As(V) precipitate with low solubility, from Ca4(OH)2(AsO4)2·4H2O (Ksp = 10−27.49) to Ca5(AsO4)3(OH) (Ksp = 10−40.12). This work is beneficial for the application of cement-free MSB in the S/S process.

Capillary isotachophoretic study of outer-sphere complex formation

1987 ◽  
Vol 23 (11) ◽  
pp. 811-813 ◽  
Author(s):  
S. Fanali ◽  
L. Ossicini ◽  
M. Sinibaldi
Keyword(s):  
Complex Formation ◽  
Outer Sphere ◽  
Outer Sphere Complex ◽  
Sphere Complex

Magnesium ion inner sphere complex in the anticodon loop of tRNAPhe

Biochemistry ◽  
1982 ◽  
Vol 21 (1) ◽  
pp. 49-53 ◽  
Author(s):  
Damian Labuda ◽  
Dietmar Poerschke
Keyword(s):  
Magnesium Ion ◽  
Anticodon Loop ◽  
Inner Sphere ◽  
Sphere Complex

scholarly journals Outer-sphere Complex Formation between Tris-(ethylenediamine)cobalt(III) Ion and Iodide Ion in Aqueous Solution.

1971 ◽  
Vol 25 ◽  
pp. 3752-3762 ◽  
Author(s):  
Lars Johansson ◽  
D. G. Nicholson ◽  
Bjarne Kimland ◽  
Curt R. Enzell ◽  
R. J. J. C. Lousberg ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Outer Sphere ◽  
Outer Sphere Complex ◽  
Iodide Ion ◽  
Sphere Complex
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