Cobalt doped cubic and rhombohedral In2O3: The role of crystalline phase of indium oxide in sensor response to hydrogen
0
Citation
15
Reference
10
Related Paper
Keywords:
Trigonal crystal system
Cobalt oxide
In this paper, we report for the first time the synthesis of cobalt nitrate hexahydrate, cobalt oxide, and cobalt particles formed from a high purity cobalt metal by a novel laser vaporization controlled condensation (LVCC) method under controlled pressures of N2 and O2. The metal vapor produced from a cobalt target in the presence of 50% N2 and 50% O2 results in the formation of cobalt nitrate. We also explored the possibilities of forming cobalt oxide and cobalt nanoparticles by altering the ratio of N2 and O2 present. For example, the synthesis of pure cobalt oxide (CoO) nanoparticles is of importance and challenging since a simple chemical route is complex. We believe that this work will be of significant importance since the present method is promising for the synthesis of metal mono oxides.
Cobalt oxide
Cobalt extraction techniques
Vaporization
Cite
Citations (55)
Cobalt oxide
Incipient wetness impregnation
Cobalt extraction techniques
Cite
Citations (0)
Fischer–Tropsch process
Cobalt oxide
Cite
Citations (7)
Cobalt oxide
Cite
Citations (4)
Selectively targeted polyaromatic 2-nitrotriptycene (M1 ) and 2,6,14-trinitrotriptycene (M2 ) were chosen as model substrates for demonstrating catalytic hydrogenation, under ambient conditions, using a cobalt/cobalt oxide based nanocomposite (CoNC ) as the catalytic material.
Cobalt oxide
Cite
Citations (11)
The cobalt oxide is produced from cobalt catalyst waste by using acidolysis precipitate method.The test results show that the process and equipment is feasible,the good technical and economic data are also obtained .The cobalt content in industric cobalt oxide is 71.06%,the recovery of cobalt is more than 85%.
Cobalt oxide
Cobalt extraction techniques
Cite
Citations (0)
1) The chemical states of cobalt in the supported catalysts may be classified into two types. One is the type in which the cobalt is not combined with the carrier but remains free on its surface. In the other type, cobalt oxide forms a complex with the carrier and resists reduction by hydrogen. 2) The ratio of the amounts of the two types varied both with the kind of carrier and with the method of preparation used. 3) The hydrothermally-formed cobalt-alumina and cobalt-silica catalysts form CoAl2O4 and cobalt hydrosilicate compounds respectively. 4) The course of the reduction of cobalt oxide in the catalyst is as follows: In the temperature range from 200 to 300°C, the cobalt(II, III) oxide is mainly reduced to cobalt(II) oxide, and later cobalt(II) oxide is reduced to β-Co between 300 and 500°C. The reduction temperature of cobalt(II, III) oxide is different for the various types of catalysts. 5) The catalyst which consists of a complex between the metal and its carrier-oxide is less active than the free metal catalyst for the hydrogena-tion reaction, and it is almost completely inactive in the hydrogenolysis reaction. 6) The results of the various analyses of the supported cobalt catalysts are in good agreement with one other.
Cobalt oxide
Hydrogenolysis
Cite
Citations (4)
Physisorption
Cobalt oxide
Cite
Citations (10)
Cobalt oxide
Incipient wetness impregnation
Cobalt extraction techniques
Cite
Citations (187)
The electrodeposition of cobalt and cobalt oxides from a glyceline deep eutectic solvent is reported.
Cobalt oxide
Deep eutectic solvent
Cite
Citations (32)