Preparation method of highly dispersed precipitated white carbon black
A technology of precipitated silica and high dispersibility, applied in the direction of silica, silicon oxide, etc., can solve the problems of unfavorable industrialization and rising production costs, and achieve the effect of improving product performance, upgrading grades, and good fluidity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] Weigh 74.11 g of 85% 2-hydroxypropionic acid solution and add 84.04 g of water to prepare 212 mL of 2-hydroxypropionic acid aqueous solution with a concentration of 3.30 mol / L for later use.
[0039] The water glass used is industrial grade liquid, Na 2 O and SiO 2The percentages are 7.99% and 26.75% respectively, and the modulus is 3.45. It is used as water glass raw material after filtering to remove suspended impurities. Weigh 254g water glass raw material, add water and dilute to become 800mL water glass base liquid.
[0040] Add the above-mentioned water glass base liquid into a 1.2L stirred reactor, stir (input power is 750W / m 3 ) to 75°C. The above-mentioned 2-hydroxypropionic acid aqueous solution was added dropwise within 3 hours to lower the pH value of the suspension to 5.2, and the addition of acid was stopped. After aging at 85°C for 30 minutes, filter and wash with water until the conductivity of the washing solution is ≤300μs / cm, and oven-dry the filt...
Embodiment 2
[0043] The same method as in Example 1, except that the 2-hydroxypropionic acid in Example 1 is replaced with 2-hydroxyl-1,2,3-hexanetriic acid, and the monohydrate 2-hydroxyl-1,2 with a purity of 99.2% , Dissolve 49.4g of 3-hexanetriacic acid in water to make 111ml of 2-hydroxyl-1,2,3-hexanetrionic acid aqueous solution with a concentration of 2.10mol / l.
[0044] The moisture content of the product is 4wt%, and its morphology and structure are shown in the attached figure 2 , the test results of other performance and application performance are shown in Table 1.
Embodiment 3
[0046] Dissolve 24.7 g of 2-hydroxy-1,2,3-hexanetrionic acid monohydrate with a purity of 99.2% in water to prepare 56 ml of 2-hydroxy-1,2,3-hexanetriic acid aqueous solution with a concentration of 2.08 mol / l for later use. The content is 95% industrial grade concentrated sulfuric acid 18.05g and water is configured into 73ml of sulfuric acid solution of 2.40mol / l, set aside.
[0047] The water glass base liquid 800ml identical with embodiment 1 joins in the 1.2L stirred reactor, stirs (input power is 750W / m 3 ) to 75°C. Add the above-mentioned 2-hydroxy-1,2,3-hexanetriic acid aqueous solution dropwise over 1.5 hours, then add the above-mentioned sulfuric acid solution dropwise over 1.5 hours to lower the pH value to 5.1. After adding the acid, keep the temperature at 75°C for aging After 30 minutes, filter, wash with water until the conductivity of the water is ≤300μs / cm, and oven-dry at 105°C until the moisture content of the product is 4wt%, to obtain a precipitated white...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| adsorption capacity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More