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Method for controlling and preparing vaterite calcium carbonate by using sinapic acid

A technology of sinapinic acid and calcium carbonate, which is applied in the fields of calcium carbonate/strontium/barium, chemical instruments and methods, calcium/strontium/barium compounds, etc. It can solve problems such as difficult control of reaction conditions, high cost of organic matter sources, and complicated preparation process

Inactive Publication Date: 2019-04-26
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the problems of complex preparation process, high cost of organic matter sources, difficult control of reaction conditions, etc. in the preparation of specific morphology and crystalline calcium carbonate crystal particles at present, and to expand and control the organic matter source for preparing calcium carbonate crystal particles, the purpose of the present invention is to provide A kind of method utilizing sinapinic acid regulation to prepare vaterite calcium carbonate

Method used

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  • Method for controlling and preparing vaterite calcium carbonate by using sinapic acid
  • Method for controlling and preparing vaterite calcium carbonate by using sinapic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) In a water bath with magnetic stirring, dissolve sinapinic acid in deionized water and stir for 10 minutes to form a 10g / L sinapinic acid solution;

[0021] 2) In a water bath with magnetic stirring, add 1.4 g of anhydrous CaCl to 12.5 mL of the sinapinic acid solution obtained in step 1) 2 , stirred for 10min to form sinapinic acid-CaCl 2 compound solution;

[0022] 3) Use 1mol / L NaOH solution to adjust step 2) to obtain sinapinic acid-CaCl 2 Composite solution makes its pH=7;

[0023] 4) In a water bath with magnetic stirring, 12.5 mL of 0.2 mol / L Na 2 CO 3 The solution was added to the pH 7 sinapinic acid-CaCl obtained in step 3) 2 In the composite solution, after stirring for 10 minutes, seal at 25°C and crystallize at a constant temperature for 24 hours to obtain a solution containing precipitation;

[0024] 5) Wash the precipitation-containing solution obtained in step 4) with deionized water and absolute ethanol for 3 times respectively, centrifuge at 78...

Embodiment 2

[0026] 1) In a water bath with magnetic stirring, dissolve sinapinic acid in deionized water and stir for 10 minutes to form a 20g / L sinapinic acid solution;

[0027] 2) In a water bath with magnetic stirring, add 2.1 g of anhydrous CaCl to 12.5 mL of the sinapinic acid solution obtained in step 1) 2 , stirred for 10min to form sinapinic acid-CaCl 2 compound solution;

[0028] 3) Use 1mol / L NaOH solution to adjust step 2) to obtain sinapinic acid-CaCl 2 Composite solution makes its pH=9;

[0029] 4) In a water bath with magnetic stirring, 12.5 mL of 0.3 mol / L Na 2 CO 3 Add the solution to the pH 9 sinapinic acid-CaCl obtained in step 3) 2 In the composite solution, after stirring for 10 minutes, seal at 40°C and crystallize at a constant temperature for 18 hours to obtain a solution containing precipitation;

[0030] 5) Wash the precipitation-containing solution obtained in step 4) with deionized water and absolute ethanol for 3 times respectively, centrifuge at 7830r / mi...

Embodiment 3

[0032] 1) In a water bath with magnetic stirring, dissolve sinapinic acid in deionized water and stir for 10 minutes to form a 30g / L sinapinic acid solution;

[0033] 2) In a water bath with magnetic stirring, add 2.8 g of anhydrous CaCl to 12.5 mL of the sinapinic acid solution obtained in step 1) 2 , stirred for 10min to form sinapinic acid-CaCl 2 compound solution;

[0034] 3) Use 1mol / L NaOH solution to adjust step 2) to obtain sinapinic acid-CaCl 2 Composite solution makes its pH=10;

[0035] 4) In a water bath with magnetic stirring, 12.5 mL of 0.4 mol / L Na 2 CO 3 The solution was added to the pH 10 sinapinic acid-CaCl obtained in step 3) 2 In the composite solution, after stirring for 10 minutes, seal at 45°C and crystallize at a constant temperature for 12 hours to obtain a solution containing precipitation;

[0036]5) Wash the precipitation-containing solution obtained in step 4) with deionized water and absolute ethanol for 3 times respectively, centrifuge at 7...

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Abstract

The invention discloses a method for controlling and preparing vaterite calcium carbonate by using sinapic acid. The adopted method is characterized in that calcium carbonate crystalline grains with specific crystal forms and morphologies and different sizes are controlled and prepared by changing process parameters such as concentration, pH and reaction temperature of the sinapic acid, and CaCl2and Na2CO3 concentrations with the sinapic acid as an organic matter according to a biological mineralization principle so as to meet the demands of specific industrial fields. The process technologyinvolved by the invention is rapid, efficient and environmentally friendly; a lignin monomer model compound sinapic acid as an organic control substrate is introduced into the raw materials for preparing the calcium carbonate crystalline grains with specific crystal forms and morphologies and different sizes; the CaCO3 nucleation, growth and phase transformation process is induced; the source of the organic matter for controlling and preparing the calcium carbonate crystalline grains is expanded, an innovative idea is provided for resource utilization of residual lignin in the pulping waste liquid, and remarkable environmental and social benefits are provided.

Description

technical field [0001] The invention relates to a method for regulating and preparing calcium carbonate by using sinapinic acid, in particular to a method for preparing vaterite calcium carbonate by using sinapinic acid for regulating and controlling, and belongs to the cross technical field of inorganic non-metallic materials and organic polymer materials. Background technique [0002] Calcium carbonate is a natural inorganic non-metallic material that is widely distributed in nature and has various crystal forms, the most common of which are three: calcite, aragonite and vaterite. Among them, vaterite is extremely unstable and will automatically transform into calcite in nature. Compared with calcite, a dense calcium carbonate, vaterite is a micron-sized particle with a porous or hollow surface, and the surface is composed of nano-sized particles. It has a large specific surface area, hydrophilicity and good biocompatibility, not only It can be used in industries such as ...

Claims

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Application Information

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IPC IPC(8): C01F11/18
CPCC01F11/183C01P2004/32C01P2004/61
Inventor 张勇胡辉冯张秀梅姚菊明
Owner ZHEJIANG SCI-TECH UNIV
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