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Method for synthesizing flaky pearlized bismuth oxychloride

A bismuth oxychloride and pearlescent technology, which is applied in chemical instruments and methods, halogen oxides/oxyacids, inorganic chemistry, etc., can solve the problems of complex process and difficult wastewater treatment, achieve simple process, solve the difficulty of wastewater treatment, Controllable effect

Active Publication Date: 2010-08-18
HUNAN SHIZHUYUAN NON FERROUS METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses the surfactant cetyl ammonium chloride, the process is complicated, and the wastewater treatment after production is difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for synthesizing flaky pearlescent bismuth oxychloride, carried out as follows:

[0016] 1) Prepare bismuth chloride solution: take density 1.3 / cm 3 Bismuth chloride stoste, add the acidification pure aqueous solution containing hydrochloric acid 5%; The volume ratio of acidification pure aqueous solution and bismuth chloride stoste is 1: 1;

[0017] 2) Preparation of acidified pure water: take pure water equivalent to 8 times the volume of the bismuth chloride solution prepared in step 1) and add hydrochloric acid for acidification to obtain acidified pure water containing 1% hydrochloric acid;

[0018] 3) Synthesis: Heat the acidified pure water prepared in step 2 to 88°C and keep the temperature constant; use a mixer to continuously stir the acidified pure water, control the speed of the mixer to 250-450r / min, and slowly transfer the acidified pure water to the acidified pure water at a speed of 30mL / min. Add dropwise the prepared bismuth chloride solution ...

Embodiment 2

[0021] A method for synthesizing flaky pearlescent bismuth oxychloride, carried out as follows:

[0022] 1) Prepare bismuth chloride solution: take density 1.4g / cm 3 Bismuth chloride stoste, add acidified pure aqueous solution containing 4% hydrochloric acid; The volume ratio of acidified pure aqueous solution and bismuth chloride stoste is 1: 1.5;

[0023] 2) Prepare acidified pure water: take pure water equivalent to 10 times the volume of the bismuth chloride solution prepared in step 1) and add hydrochloric acid for acidification to obtain acidified pure water containing 2% hydrochloric acid;

[0024] 3) Synthesis: Heat the acidified pure water prepared in step 2 to 90°C and keep the temperature constant; use a mixer to continuously stir the acidified pure water, control the speed of the mixer to 250-450r / min, and slowly transfer the acidified pure water to the acidified pure water at a speed of 20mL / min. Add dropwise the prepared bismuth chloride solution of 1) step in t...

Embodiment 3

[0027] A method for synthesizing flaky pearlescent bismuth oxychloride, carried out as follows:

[0028] 1) Prepare bismuth chloride solution: take density 1.5g / cm 3 Bismuth chloride stock solution, add the acidified pure aqueous solution containing hydrochloric acid 3%%; The volume ratio of acidified pure aqueous solution and bismuth chloride stock solution is 1: 1;

[0029] 2) Preparation of acidified pure water: take pure water equivalent to 6 times the volume of the prepared bismuth chloride solution in step 1) and add hydrochloric acid for acidification to obtain acidified pure water containing 3% hydrochloric acid;

[0030] 3) Synthesis: Heat the acidified pure water prepared in step 2 to 86°C and keep the temperature constant; use a mixer to continuously stir the acidified pure water, control the speed of the mixer to 250-450r / min, and slowly transfer the acidified pure water to the acidified pure water at a speed of 10mL / min. Add dropwise the prepared bismuth chloride...

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Abstract

The invention relates to a method for synthesizing flaky pearlized bismuth oxychloride, which belongs to the technical field of inorganic material preparation. The method comprises the following steps: 1) preparing a bismuth chloride solution; 2) preparing acidified pure water; 3) dropwisely adding the bismuth chloride solution to hydrolyze and synthetize the flaky pearlized bismuth oxychloride; and 4) processing into finished flaky pearlized bismuth oxychloride. The method has the advantages of easy amplification, convenient regulation and control, and strong controllability. The product obtained by using the method has the advantages of uniform dispersibility, good glossiness and stable property, and has broad market prospects in the fields of inorganic pigments, pearlized buttons, pearlized decorations and the like. The invention solves the problem of difficulty in waste water treatment after production in the prior art, and protects the ecological environment.

Description

Technical field [0001] The invention relates to a method for synthesizing flaky pearlescent bismuth oxychloride, which belongs to the technical field of inorganic material preparation technology. Background technique [0002] Flaky pearlescent bismuth oxychloride, the molecular formula is BiOCl, the molecular weight is 260.432, the character is silver-white flaky square crystal powder with pearlescent, and depending on the precipitation conditions, it forms irregular flakes, or in the case of high-gloss pigments, forms extremely flat A circular to square pyramid with an apex. Flake pearlescent bismuth oxychloride is non-toxic, has a density of 7.72g / cm3, a melting point of 218°C, and a boiling point of 481°C. It decomposes into oxides of indefinite composition when heated in the air, and part of it is volatilized as BiCl3. It is mainly used as non-toxic pearlescent pigments, high-end cosmetics, pearlescent buttons and jewelry products, and can also be used as a catalyst. ...

Claims

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Application Information

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IPC IPC(8): C01B11/00
Inventor 谢大鹏刘澜明伏彩萍袁节平
Owner HUNAN SHIZHUYUAN NON FERROUS METAL
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