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Preparation method of microporous ultrafine high activity nickel carbonate

A microporous, nickel carbonate technology, applied in the direction of nickel carbonate, to achieve the effect of narrow particle size distribution and good dispersion

Inactive Publication Date: 2010-10-20
郑景宜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on the preparation of pure nickel carbonate and acid nickel carbonate

Method used

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  • Preparation method of microporous ultrafine high activity nickel carbonate
  • Preparation method of microporous ultrafine high activity nickel carbonate
  • Preparation method of microporous ultrafine high activity nickel carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 drum type reaction tank

[0040] see figure 1 , 2 , a drum-type reaction tank, comprising: a reaction tank body 3, a horizontal bar 7, a support frame 1, a tank cover 5, a feed port 8 with a valve, the body 1 is circular, and the horizontal bar 7 is integrated with the reaction tank body 3, The horizontal bar 7 is fixed on the support frame 3, the tank cover 5 is on the top of one end of the reaction tank body 3, the horizontal bar is connected with the driving device, the reaction tank body 3 is equipped with a fixed comb-type plow stirring device 4, and the body 3 is also equipped with There is an air inlet 9 with a valve, and a filter device is provided in the tank cover; zirconia balls 2 are also housed in the reaction tank; the tank cover 5 is provided with a discharge port 51 with a valve for discharging, and the filter device is two A filter cloth 53 is sandwiched between the layers of screen cloth 52 .

Embodiment 2

[0041] Example 2 Drying and pulverizing machine

[0042] Such as image 3 , 4 As shown in , 5, the drying and crushing integrated machine is composed of a feeder 1, a hot air blower 2, a cyclone drying and crushing tower 3, a cyclone collecting tower 4, a dust collecting tower 5, an induced draft fan 6, a heat exchanger 7, and a tower base 9 Composition, the described whirlwind drying crushing tower 3 is made up of feed inlet 315, hot air pressure stabilizing chamber inlet 38, several hot air inlets 37, hot air agitator, discharge port 312 and discharge port 313, and the hot air pressure stabilizing chamber is The cavity formed around the base of the body 31 of the cyclone drying and crushing tower 3, the feed port 315 is located in the middle of the body 31 of the cyclone drying and crushing tower 3, above the agitator, connected with the feeder 1, and the hot air inlet 38 is located on the body On the bottom side wall of 31, it is connected with hot air blower 2, and disch...

Embodiment 3

[0045] see figure 1 , 2 ;

[0046] 1. According to the ratio of pure nitric acid, sulfuric acid and hydrochloric acid by weight: 4~8:2~6:1~3, the mixed acid solution prepared is then dissolved in the mixed acid solution to prepare the composite nickel salt;

[0047] 2. Mix uniformly according to the ratio of sodium carbonate, ammonium carbonate or ammonium bicarbonate and sodium hydroxide by weight: 5.0-8.5: 1.0-4.5: 0.05-0.1, and prepare a mixed precipitant;

[0048] 3. Ratio by weight: composite nickel salt: mixed precipitant=1: 1.1-1.3 ratio, with a concentration of 4-12% composite nickel salt aqueous solution and a concentration of 8-17% mixed precipitant aqueous solution, through the feeder with valve Port 8, parallel flow pump into the reaction tank, close the feeding port 8, and feed CO at high pressure through the gas filling port 9 2 At the same time, after opening the discharge port 51 with valve to discharge the air, close the discharge port 51 with valve. Under ...

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Abstract

The invention discloses a preparation method of microporous ultrafine high activity nickel carbonate, comprising the following steps of adopting mixed acid solution prepared from nitric acid, sulfuric acid and hydrochloride to dissolve metal nickel to prepare composite nickel salts used as raw materials; carrying out precipitation reaction with the composite nickel salts by using mixed percipitant of sodium carbonate, ammonium carbonate or ammonium bicarbonate and sodium hydroxide in a sealed drum type reaction pot under the action of high pressure CO2; and preparing the nickel carbonate by crushing and drying precipitates by adopting an integrative machine of crushing and drying after washing the precipitates. Shown through a particle image analyzer, a full-automatic specific surface area voidage analyzer and an SEM (Scanning Electron Microscope) photograph result, the nickel carbonate has fine size, the particle size of D50 can achieve 1-5 microns, the particle size specific surface area can achieve more than 300m2 / g, the content of carbon dioxide is larger than 20 percent, the nickel carbonate has multiple and small micropores, the powder nickel carbonate with the nickel content of 49-51 percent has narrow and uniform particle size distribution, wherein the particle size of D10 is 0.93 microns, the particle size of D50 is 1.81 microns and the particle size of D90 is 2.82 microns, and the dispersion of the powder nickel carbonate is favorable.

Description

Background technique [0001] The research and application of nickel-based catalysts has a long history. As early as 1903, Saba-tier used nickel catalysts to reduce acetaldehyde to methanol. In 1930, Exxon Company used NiO / Al 2 o 3 Steam reforming to produce synthesis gas. In 1931, the nickel carbonyl catalyst for the production of acetaldehyde from acetylene by the Reppe method was successfully developed. In 1934, Fischer and Trop-sch built the first Al 2 o 3 NiO oxo synthesis oil plant. Currently, Ni can be used in olefins, aromatics, aniline, phenol, nitrite, naphthalene, alcohol, aldehyde, CO and CO 2 (Fischer-Tropsch) hydrogenation. NiO can be used for the dehydrogenation of alkanes and the oxidation of hydrocarbons. [0002] Nickel catalyst is widely used because of its low price, strong process controllability and high activity in hydrogenation reaction. As a nickel-based catalyst active material component, nickel exists in the catalyst in two forms: one is metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/06
Inventor 吕文广郑景宜
Owner 郑景宜
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