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Bismuth salt dissolving method

A bismuth salt, complete dissolution technology, applied in the direction of dissolution method, dissolution, dissolution, etc., can solve the problems of high production cost, safety hazards, environmental pollution, etc., and achieve the effect of eliminating safety hazards and saving production costs

Inactive Publication Date: 2018-02-27
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of concentrated strong acid to dissolve bismuth salts has disadvantages such as environmental pollution, potential safety hazards, and high production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 1 mole (361.06 grams) of bismuth nitrate pentahydrate, 2 moles (584.48 grams) of ethylenediaminetetraacetic acid, add about 2 liters of deionized water, stir, and heat to 50-100 degrees Celsius until the bismuth nitrate becomes colorless and transparent solution.

Embodiment 2

[0026] Weigh 1 mole (361.06 grams) of bismuth nitrate pentahydrate, 1 mole (292.24 grams) of ethylenediaminetetraacetic acid, add about 2 liters of deionized water, stir, and heat to 50-100 degrees Celsius until the bismuth nitrate becomes colorless and transparent solution.

Embodiment 3

[0028] Weigh 1 mole (361.06 grams) of bismuth nitrate pentahydrate, 0.5 moles (146.12 grams) of ethylenediaminetetraacetic acid, add about 2 liters of deionized water, stir, and heat to 50-100 degrees Celsius until the bismuth nitrate becomes colorless and transparent solution.

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PUM

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Abstract

A bismuth salt dissolving method comprises the following steps: a) weighing 100 weight parts of bismuth salt, adding 10-200 weight parts of an organic chelate, and adding 500-600 weight parts of wateror a polarity organic solvent or a mixed solvent of water and the organic solvent; b) heating the mixture to 50-100 DEG C under stirring until the bismuth salt is completely dissolved, wherein the bismuth salt is one or a mixture of bismuth salt selected from bismuth nitrate, bismuthyl nitrate, bismuth chloride, bismuthyl chloride, bismuth acetate, and bismuth formate; the added organic chelate is ethylenediamine tetraacetic acid, or ethylene glycol tetraacetic acid, or diethylene triaminepentaacetic acid, or other acid form or slat chelate ligands with structures similar to ethylenediamine tetraacetic acid. The method is characterized in that strong acid is not required, the cost can be saved, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to a method for dissolving bismuth salts, in particular to an environmentally friendly method for dissolving bismuth salts, and belongs to the technical field of preparation of bismuth salt solutions. Background technique [0002] Bismuth is a non-toxic element and is widely used in catalysts for dehydrogenation, oxidation, photocatalysis, and acetylenylation reactions. Bismuth salts (bismuth nitrate, bismuth oxynitrate, bismuth chloride, bismuth acetate, bismuth citrate, etc.) are precursors for preparing bismuth-containing catalysts or other bismuth-containing oxides, but dissolving bismuth salts requires adding a large amount of concentrated strong acid to prevent it Hydrolysis occurs. However, the use of concentrated strong acid to dissolve bismuth salts has disadvantages such as environmental pollution, potential safety hazards, and high production costs. Contents of the invention [0003] The purpose of the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F1/00
CPCB01F21/02
Inventor 莫流业
Owner ZHEJIANG OCEAN UNIV
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