Method for preparing nano nickel bicarbonate

A nickel bicarbonate and nanotechnology, applied in the direction of nickel carbonate, can solve few problems

Inactive Publication Date: 2011-02-02
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently, due to the Ni(OH) 2 It is a recognized positive electrode active material for batteries.

Method used

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  • Method for preparing nano nickel bicarbonate
  • Method for preparing nano nickel bicarbonate
  • Method for preparing nano nickel bicarbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1.523 g (0.0064 mol) NiCl 2 ·6H 2 O and 0.341 g (0.0085 mol) NaOH were dissolved in 40 mL distilled water to generate amorphous Ni(OH) 2 Precipitate the suspension, transfer the precipitate to a 50 mL Teflon-lined hydrothermal reaction vessel, and 2 Add 1.536g (0.0256 mol) urea to the precipitate suspension and react at 180°C for 4h. After the hydrothermal reaction was completed, cool down, filter the precipitates of the two samples, wash them with distilled water and absolute ethanol three times, and then dry them in a vacuum oven at 60 °C for 4 h to obtain nano-nickel bicarbonate. Its structural analysis and micrographs are shown in Figure 4 .

Embodiment 2

[0024] 0.995 g (0.004 mol) Ni(CH 3 COO) 2 4H 2 O and 0.192 g (0.0048 mol) NaOH were dissolved in 40 mL of distilled water to generate amorphous Ni(OH) 2 Precipitate the suspension, transfer the precipitate to a 50 mL polytetrafluoroethylene-lined hydrothermal reactor, add 1.922g (0.032mol) urea, and react at 240°C for 1h. After the hydrothermal reaction, cool down, filter the sample precipitate, wash with distilled water and absolute ethanol three times in turn, and then dry in a vacuum oven at 60°C for 4 hours to obtain nano-nickel bicarbonate.

Embodiment 3

[0026] 11.63 g (0.04 mol) Ni(NO 3 ) 2 ·6H 2 O and 4.49 g (0.08 mol) KOH were dissolved in 40 mL distilled water to generate amorphous Ni(OH) 2 Precipitate the suspension, transfer the precipitate to a 50mL polytetrafluoroethylene-lined hydrothermal reactor, add 2.401g (0.04mol) urea, and react at 90°C for 96h. After the hydrothermal reaction, cool down, filter the sample precipitate, wash with distilled water and absolute ethanol three times in turn, and then dry in a vacuum oven at 60°C for 4 hours to obtain nano-nickel bicarbonate.

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Abstract

The invention relates to a method for preparing nano nickel bicarbonate, which comprises the following steps of: adding water into urea or urotropine for dissolving, adding nickel salt or nickel hydroxide and stirring, wherein the mole ratio of the urea or the urotropine to nickel is 1:1-16:1, and the concentration of the nickel salt in solution is 0.1-1.0mol/L; shifting the obtained solution into a hydrothermal reactor; after reacting at 90-240 DEG C for 1-96 hours, cooling; and filtering obtained reaction mixed liquid, washing with distilled water and anhydrous ethanol and placing in a vacuum drying box at 60 DEG C for drying to obtain a cubic phase nano nickel bicarbonate square block with the size of 100nm or so. The invention uses the urotropine or the urea as a precipitator, NH3 andCO2 generated by the precipitator dissolve nickel hydroxide, and the pure cubic phase Ni(HCO3)2 nano crystal is prepared finally.

Description

technical field [0001] The invention relates to a method for preparing an inorganic compound, in particular to a method for preparing nano-nickel bicarbonate by a hydrothermal method. Background technique [0002] Currently, due to the Ni(OH) 2 It is a recognized positive electrode active material for batteries. In recent years, Ni(OH) 2 The research on Ni(HCO 3 ) 2 researches are rarely reported in the literature. Seen and mentioned are the mixed phases produced in the process of preparing nickel-containing catalysts. For example, when K. J.Ciufi et al. used the sol-gel method to prepare nickel aluminosilicate catalysts, Ni(HCO 3 ) 2 ; When Peter Birke etc. prepare the catalyst that makes the nitro hydrogenation of nitroaromatics generate corresponding amine, in the catalyst precursor preparation, produce by Ni(HCO 3 ) 2 and Ni 3 (OH) 4 (NO 3 ) 2 composition of the mixture. Contents of the invention [0003] The purpose of the present invention is to provide...

Claims

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Application Information

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IPC IPC(8): C01G53/06
Inventor 黄礼胜周亚军周文娟尤佳
Owner NANJING UNIV OF TECH
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