The extraction of anionic complexes of divalent manganese, cobalt, nickel and copper from aqueous thiocyanate solutions by tricaprylmethylammonium chloride

2007 ◽  
Vol 29 (1) ◽  
pp. 39-50 ◽  
Author(s):  
Taichi Sato
1982 ◽  
Vol 60 (18) ◽  
pp. 2351-2354 ◽  
Author(s):  
P. P. Singh ◽  
V. P. Singh

RHgSCN (R = n-C3H7, (iso-C3H7) react with M(NCS)2 (M = Co(II), Ni(II), Zn(II)) to form compounds of general formula (SCN)2M(NCSHgR)2. Conductance measurements and infrared and electronic spectral studies indicate that M and mercury atoms are linked by bridging thiocyanate groups. Cobalt and zinc are tetrahedrally coordinated, whereas nickel is octahedral. With the exception of zinc analogs, these compounds form complexes with Lewis bases. Pyridine and nicotinamide form adducts of general formula L2(SCN)2M(NCSHgR)2, while 2,2′-bipyridine and 1,10-phenanthroline form cationic–anionic complexes of formula [M(L—L)3][RHg(SCN)2]2.


Alloy Digest ◽  
1953 ◽  
Vol 2 (10) ◽  

Abstract KOVAR A is a cobalt, nickel, iron alloy recommended for sealing into hard glass. Has similar expansion curve as glass, makes firm bond between metal and glass, is easy to machine and form, and has high resistance to thermal shock. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-3. Producer or source: Carborundum Company, Refractories Division.


Alloy Digest ◽  
2020 ◽  
Vol 69 (3) ◽  

Abstract Wieland Duro Elmedur HA is a heat-treatable copper-cobalt-nickel-beryllium alloy. In the age hardened condition, this alloy exhibits high electrical and thermal conductivity along with moderate strength and hardness. This datasheet provides information on composition, physical properties, and hardness. It also includes information on joining. Filing Code: Cu-906. Producer or source: Wieland Duro GmbH.


Alloy Digest ◽  
1961 ◽  
Vol 10 (12) ◽  

Abstract MULTIMET alloy is cobalt-nickel-chromium-iron austenitic alloy having high oxidation and scaling resistance along with good high-temperature properties. It tends to work harden but does not respond significantly to age-hardening. It is made in a wrought grade (0.08-0.16% carbon) and a casting grade (0.20% max. carbon). This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SS-28. Producer or source: Haynes Stellite Company. Originally published May 1955, revised December 1961.


2020 ◽  
Vol 13 (12) ◽  
pp. 124002
Author(s):  
Tao Hu ◽  
Wanli Ma ◽  
Jing Wu ◽  
Zhibo Zhang ◽  
Wei Zhou ◽  
...  

1979 ◽  
Vol 44 (7) ◽  
pp. 2024-2031 ◽  
Author(s):  
František Vláčil ◽  
Huynh Dang Khanh

The dependence of the distribution ratio of the metal on the concentration of hydrochloric of nitric acid was examined for Fe, Co, Ni and Cu extraction with 0.05M solution of dibenzylsulfoxide in toluene. Iron is extracted considerably more than the other metals, and is better extracted from hydrochloric acid than from nitric acid. The separation factor αFe/M (for 8M-HCl) is of the order of 104; this is not sufficient for a separation of trace quantities of iron from Co, Ni and Cu, but even at lower concentrations of HCl (e.g., 5M) the values is high enough for extraction chromatographic separation. The composition of the iron solvate extracted from HCl or LiCl medium was determined to be HFeCl4.2 B (B = dibenzyl sulfoxide).


Author(s):  
M. Chomiak ◽  
J. Trawczyński ◽  
M. Zawadzki

AbstractZn–Ti–Co(Ni) sorbents for H2S removal from model hot coal were prepared and characterized. Effects of cobalt (Co) and nickel (Ni) on the sorbents texture, structure, H2S sorption capacity and regeneration properties were determined. TiO2 formed mixed metal oxides with CoO and NiO in the fresh sorbents, while TiO2 and nanocrystalline sulfides of Zn, Co, Ni were found in sulphided ones. The oxidative regeneration of sulphided sorbents re-formed mixed oxides. Sorption capacity of studied materials increased along with an increase of the amount of added Co (Ni) and also with the number of work cycles. Co-doped Zn–Ti materials adsorbed up to 244% more sulfur than these of Zn–Ti, while Ni-doped materials adsorbed ca. twice more H2S than the corresponding Co-doped sorbents. The addition of Co (Ni) decreased the temperature of ZnS oxidation. The catalytic effect of the Co (Ni) oxides on the oxidation of ZnS was suggested.


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