ChemInform Abstract: Nickel Bicarbonate Revealed as a Basic Carbonate.

ChemInform ◽  
2016 ◽  
Vol 47 (7) ◽  
pp. no-no
Author(s):  
Christine Rincke ◽  
Sebastian Bette ◽  
Robert E. Dinnebier ◽  
Wolfgang Voigt
Keyword(s):  
Basic Carbonate

Continuous precipitation of monodispersed yttrium basic carbonate powders: Part III. Kinetics

1992 ◽  
Vol 7 (8) ◽  
pp. 2269-2272 ◽  
Author(s):  
Y-S. Her ◽  
E. Matijević ◽  
W.R. Wilcox
Keyword(s):  
Experimental Data ◽  
Reaction Time ◽  
Linear Function ◽  
Model Equation ◽  
Conversion Yield ◽  
Continuous Precipitation ◽  
Empirical Constant ◽  
Continuous Processes ◽  
Acidic Solutions ◽  
Basic Carbonate

The reaction kinetics involved in the continuous precipitation of monodispersed spherical yttrium basic carbonate particles was studied. The amount of powder produced was a linear function of H2CO3 generated by the decomposition of urea in mildly acidic solutions. A model equation, containing an empirical constant F, was derived to describe the conversion yield as a function of reactant concentrations, reaction time, and temperature. The calculated and experimental data agree well for both the batch and continuous processes.

scholarly journals Co-Ni Basic Carbonate Nanowire/Carbon Nanotube Network With High Electrochemical Capacitive Performance via Electrochemical Conversion

2021 ◽  
Vol 9 ◽  
Author(s):  
Furui Tan ◽  
Hongyuan Chen ◽  
Ronghua Yuan ◽  
Xuming Zhang ◽  
Deliang Chen
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotube ◽  
Photoelectron Spectroscopy ◽  
Nanowire Array ◽  
Test System ◽  
Electrochemical Activation ◽  
Rate Performance ◽  
Capacitive Performance ◽  
X Ray ◽  
Basic Carbonate

In this work, the Co-Ni basic carbonate nanowires were in-situ grown on carbon nanotube (CNT) network through a facile chemical bath deposition method, which could be further converted into active hydroxide via cyclic voltammetry strategy. A series of carbonate nanowire/nanotube with different Co/Ni ratio revealed the different growth status of the nanowires on CNT network. The nanostructures of the as-synthesized samples were examined via powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) techniques. The Co/Ni ratio of the carbonate largely affected the size of the nanowires, that the low Co/Ni ratio was beneficial for thin nanowire formation and the nanowires loading on CNT network. Subsequently, the electrochemical performance of the Co-Ni basic hydroxides was studied in a three-electrode test system. The nanowires with low Co/Ni ratio 1/2 can form nanowire array on individual CNTs, which exhibited better electrochemical capacitive performance than the composite network with high Co/Ni ratio nanowires after electrochemical activation. The addition of Co enhanced the rate performance of the hydroxide/CNT, especially improved the long cycle stability largely compared to the rate performance of pure Ni converted hydroxide/CNT composite film reported by our previous research. This result is valuable for the design of inorganic electrochemical active composites based on conductive networks for energy conversion/storage applications.

CONTRIBUTION TO THE STUDY OF THE PRECIPITATION OF CARBONATES, BORATES, SILICATES AND ARSENATES

1941 ◽  
Vol 19b (8) ◽  
pp. 179-204 ◽  
Author(s):  
Paul E. Gagnon ◽  
Louis Cloutier ◽  
R. Martineau
Keyword(s):  
Liquid Medium ◽  
Room Temperature ◽  
The Other ◽  
Hydrogen Ion ◽  
Ion Concentration ◽  
Molar Ratio ◽  
Hydrogen Ion Concentration ◽  
Basic Carbonate ◽  
Series Of Experiments ◽  
Cobalt And Nickel

A study was made of the precipitation, at room temperature, of the carbonates of cadmium, cobalt, and nickel, of the chromate of beryllium, of the borates of zinc, of the silicates of copper and of the arsenates of lead. A rapid-mixing apparatus that insured that the precipitations took place in homogeneous liquid medium was used. In each series of experiments, the concentration of one reacting solution was kept constant and that of the other systematically varied. The values of the molar ratio of oxides, CdO/CO2 for example, in the precipitates were found by analysis. If they remained constant with different concentrations of reactants, a definite compound was indicated. The normal cadmium carbonate was obtained. Three definite basic compounds, not described in the literature, were prepared: a definite basic carbonate of cobalt, 5CoCO3∙Co(OH)2, and two definite basic arsenates of lead, 4Pb3(AsO4)2∙Pb(OH)2 and 9Pb3(AsO4)2∙Pb(OH)2. Dilead arsenate, PbHAsO4, was easily precipitated, but trilead arsenate, Pb3(AsO4)2, only under very specific conditions. The other precipitates were all mixtures. The influence of the hydrogen ion concentration of the solutions on the composition of the precipitates formed was determined.

scholarly journals Contributions to the chemical history of the compounds of palladium and platinum

1843 ◽  
Vol 4 ◽  
pp. 379-380
Keyword(s):  
Royal Society ◽  
Caustic Potash ◽  
Double Salts ◽  
Basic Carbonate ◽  
History Of ◽  
Chemical History ◽  
Series Of Experiments ◽  
True Basic ◽  
Hydrated Oxide ◽  
Palladium Platinum

The author states it to be his object, in this and in some subsequent papers, to examine specially the composition and properties of the compounds of palladium, platinum, and gold; and to ascertain how far they agree, and in what they differ, as to the laws of combination to which these compounds are subjected. He commences with the investigation of the compounds of palladium, employing for that purpose a portion of that metal with which he was furnished by the Royal Society out of the quantity bequeathed to the Society by the late Dr. Wollaston. He describes the mode of obtaining the protoxide of palladium, and enters into the analysis of the hydrated oxide, the black suboxide, and the true basic carbonate of that metal; detailing their properties and the formulae which express their mode of composition. The chlorides of palladium form the next subject of inquiry; and the author concludes from his experiments that the loss of chlorine which the protochloride undergoes, when kept for some time in a state of fusion at a red heat, is perfectly definite; and also that the loss represents one half of the chlorine which the salt contains. But in the double salts formed by the protochloride of palladium with the chlorides of the alkaline metals, he finds that the similarity of constitution usually occurring between the compounds of ammonium and potassium is violated. From his analysis of the oxychloride of palladium the author concludes that it is quite analogous to the ordinary oxychloride of copper. He then examines a variety of products derived from the action of a solution of caustic potash on solutions of ammonia-chlorides of potassium. Their properties he finds to indicate analogies between palladium and other metals, whose laws of combination are better known. The sulphate, the ammonia-sulphates, the nitrates, and the ammonia-nitrates of palladium, and lastly, the double oxalate of palladium and ammonium, are, in like manner, subjected to examination in a detailed series of experiments. The second section of the paper relates to the compounds of platinum, and comprehends researches on the composition of the protochloride of platinum; on the action of ammonia on biniodide of platinum; and on the action of ammonia on the perchloride of platinum; in which the properties of these substances are detailed and the formulae expressing their composition deduced.

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