Method for preparing novel organic calcium using egg shell
A technology of organic calcium and eggshell, applied in the direction of carboxylate preparation, etc., can solve the problem that it cannot be used as a sour agent, and achieve the effect of convenient source of raw materials, obvious economic benefits, and broad product market expansion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] As shown in Figure 1, the eggshell is first washed with clean water to remove impurities, and then the eggshell membrane is separated in clean water. The eggshells were dried in a box-type oven at 110°C for 4 hours, and 20.0 g of eggshells were weighed and placed in a muffle furnace for calcination at 850°C for 4 hours to obtain eggshell ash (CaO content greater than 96%).
[0039] Weigh 11.6g of fumaric acid and place it in a 500mL flask, add 120mL of distilled water, stir and dissolve at 70°C. Weigh 5.8g of eggshell ash and dissolve it in 90mL of water to make a lime emulsion, and add it to the fumaric acid solution in batches at a constant temperature of 35°C under strong stirring to carry out the neutralization reaction. After all the reaction materials were added, stirring was continued for 2 hours at a constant temperature, and the pH value of the solution was 7.3. The reacted feed liquid was evaporated by a rotary evaporator to remove most of the water, filtered...
Embodiment 2
[0041] As shown in Figure 1, the eggshell is first washed with water to remove impurities, and then the eggshell membrane is separated in 2% dilute hydrochloric acid. The eggshells were dried in a box-type oven at 110°C for 4 hours, and 15.0 g of eggshells were weighed and placed in a muffle furnace for calcination at 950°C for 3 hours to obtain eggshell ash (CaO content greater than 96%).
[0042]Weigh 11.6g of maleic acid into a 500mL flask, add 130mL of distilled water, stir and dissolve at 55°C. Weigh 5.8g of eggshell ash, and add them in batches to the maleic acid solution at a constant temperature of 55°C under strong stirring to carry out neutralization reaction. After adding all the eggshell ash, continue to stir and react at constant temperature for 2 hours, and the pH value of the solution is 8.0. After the reaction, the feed liquid was evaporated by a rotary evaporator to remove most of the water, and after cooling, it was suction-filtered, and the obtained filter ...
Embodiment 3
[0044] As shown in Figure 1, the eggshell is first washed with clean water to remove impurities, and then the eggshell membrane is separated in clean water. The eggshells were dried in a box-type oven at 110°C for 4 hours, and 50.0 g of eggshells were weighed and placed in a muffle furnace for calcination at 1000°C for 2 hours to obtain eggshell ash (CaO content greater than 96%).
[0045] Weigh 11.6g of fumaric acid and place it in a 500mL flask, add a mixed solvent consisting of 100mL of distilled water and 10mL of absolute ethanol, stir and dissolve at 55°C. Weigh 2.9g of eggshell ash, and add them in batches to the fumaric acid solution at a constant temperature of 100°C under strong stirring to carry out the neutralization reaction. After adding all the eggshell ash, continue to stir and react at constant temperature for 2 hours, and the pH value of the solution is 2.5. After the reaction, most of the solvent was evaporated by a rotary evaporator, and finally spray-dried...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More