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Preparation process method of anhydrous zirconium sulfate

A preparation process, technology of anhydrous sulfuric acid, applied in the field of fine chemicals

Inactive Publication Date: 2021-02-02
严永生 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is aimed at the current anhydrous zirconium sulfate process problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 18g of ZrO 2 Add 200ml of concentrated sulfuric acid with a concentration of 95%, and the reaction is carried out in a round bottom flask with a reflux condenser. Add 0.5g Zr(OH) 4 As a reaction initiator to increase the reaction rate, the mixture reacts under the condition of magnetic stirring and heating. The heating temperature is 170°C, the boiling point of the solution. After 20 hours of reaction, stop heating and stir to cool to room temperature. A white precipitate appears in the solution. After solid-liquid separation, no Zirconium sulfate water. Among them, the solid-liquid separation of zirconium sulfate and concentrated sulfuric acid is to mix and dilute the concentrated sulfuric acid solution of suspended zirconium sulfate with deionized water 1:1, and then filter it with ordinary filter paper.

Embodiment 2

[0023] 18g of ZrO 2 Add 200ml of concentrated sulfuric acid with a concentration of 95%, and the reaction is carried out in a round bottom flask with a reflux condenser. Add 0.38g Zr(OH) 4 As a reaction initiator to increase the reaction rate, the mixture is reacted under magnetic stirring and heating conditions. The heating temperature is the boiling point of the solution at 170 ° C. After 10 hours of reaction, stop heating and stir to cool to room temperature. White precipitate appears in the solution. After solid-liquid separation, no Zirconium sulfate water. Among them, the solid-liquid separation of zirconium sulfate and concentrated sulfuric acid is to mix and dilute the concentrated sulfuric acid solution of suspended zirconium sulfate with deionized water at 1:0.5, and then filter it with ordinary filter paper.

Embodiment 3

[0025] 18g of ZrO 2 Add 200ml of concentrated sulfuric acid with a concentration of 95%, and the reaction is carried out in a round bottom flask with a reflux condenser. Add 7.76g Zr(OH) 4 As a reaction initiator to increase the reaction rate, the mixture reacts under the condition of magnetic stirring and heating. The heating temperature is 180°C, the boiling point of the solution. After 25 hours of reaction, the heating is stopped and the stirring is cooled to room temperature. A white precipitate appears in the solution. After solid-liquid separation, no Zirconium sulfate water. Among them, the solid-liquid separation of zirconium sulfate and concentrated sulfuric acid is to mix and dilute the concentrated sulfuric acid solution of suspended zirconium sulfate with deionized water at 1:2, and then filter it with ordinary filter paper.

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Abstract

The invention discloses a preparation process method of anhydrous zirconium sulfate. The method comprises the following steps: adding ZrO2 into concentrated sulfuric acid, and reacting in a round-bottom flask with a reflux condenser; adding Zr (OH) 4 to serve as a reaction initiator to increase the reaction rate, wherein the mixture reacts under the magnetic stirring heating condition, the heatingtemperature is the boiling point (about 170 DEG C) of the solution, heating is stopped and stirring cooling is conducted to the room temperature after the reaction is conducted for 20 h, white precipitate appears in the solution, and anhydrous zirconium sulfate can be obtained after solid-liquid separation, wherein the solid-liquid separation of zirconium sulfate and concentrated sulfuric acid also comprises the following steps: mixing a concentrated sulfuric acid solution of suspended zirconium sulfate with deionized water according to a ratio of 1: 1, diluting, and carrying out suction filtration by using common filter paper.

Description

technical field [0001] The invention relates to a process for preparing anhydrous zirconium sulfate, which belongs to the field of fine chemicals. Background technique [0002] Zirconium sulfate is a white crystalline powder that is irritating. It is mainly used as a precipitating agent for protein, as a tanning agent for leather such as white leather and wrinkled leather, and as a catalyst and antifriction agent. [0003] Main application: Catalyst carrier, amino acid and protein precipitant. Used as cod liver oil decolorizer, precipitated and separated amino acids (such as glutamic acid), etc.; used as white leather tanning agent to make the leather surface fine, rich and elastic, and can be used as lubricant, catalyst carrier, etc. [0004] It is used for retanning of chrome tanned leather, and it can be used in combination with sulfone bridge syntans to replace tanned leather for shoe lining, furniture leather and bottom leather. The finished product has fine pores, pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/06
CPCC01G25/06
Inventor 严永生
Owner 严永生
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