ZSM-22/ZSM-23 composite molecular screen and its preparation method
A composite molecular sieve, ZSM-23 technology, applied in the direction of crystalline aluminosilicate zeolite, etc., can solve problems such as ineffectiveness, and achieve the effects of low pour point, high viscosity index and high yield
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0033] Example 1
[0034] 15.4 grams of sodium hydroxide was dissolved in 745 grams of water, 193.8 grams of silica sol (30% silica) was added to it, stirred for 2 hours, 15.0 grams of sodium type ZSM-22 molecular sieve was added, and A was obtained after uniform stirring. 38.3 g of pyrrolidine was added to a solution of 5.9 g of aluminum sulfate and 244 g of water, and B was obtained after uniform stirring. Add B to A, stir vigorously for 24 hours, adjust the pH of the system with 15.1 g of 98% concentrated sulfuric acid, and then continue to vigorously stir for 12 hours to obtain the initial colloid. The molar composition of the initial colloid is: SiO 2 / Al 2 O 3 =109, R / SiO 2 =0.56, OH - / SiO2 =0.08, Na / SiO 2 = 0.4, H 2 O / SiO 2 =65, the added amount of ZSM-22 molecular sieve is 0.26 of the weight of silica. The initial colloid was transferred to a 2000 ml autoclave, and after sealing, the stirring speed was adjusted to 300 revolutions per minute, and the temperature was starte...
Example Embodiment
[0035] Example 2
[0036] 15.4 g of sodium hydroxide was dissolved in 571 g of water, 193.8 g of silica sol (30% silica) was added to it, stirred for 2 hours, 15.0 g of sodium type ZSM-22 molecular sieve was added, and A was obtained after uniform stirring. 42 g of isobutane was added to a solution of 5.9 g of aluminum sulfate and 244 g of water, and B was obtained after uniform stirring. Add B to A, stir vigorously for 24 hours, adjust the acidity and alkalinity of the system with 15.1 g of 98% concentrated sulfuric acid, and then continue to vigorously stir for 12 hours to obtain the initial colloid. The molar composition of the initial colloid is: SiO 2 / Al 2 O 3 =109, R / SiO 2 =0.56, OH - / SiO 2 =0.08, Na / SiO 2 = 0.4, H 2 O / SiO 2 =55, the added amount of ZSM-22 molecular sieve is 0.26 of the weight of silica. The initial colloid was transferred to a 2000 ml autoclave, and after sealing, the stirring speed was adjusted to 300 rpm, the temperature was started, and the temperature...
Example Embodiment
[0037] Example 3
[0038] 15.4 g of sodium hydroxide was dissolved in 571 g of water, 193.8 g of silica sol (30% silica) was added to it, stirred for 2 hours, 15.0 g of sodium type ZSM-22 molecular sieve was added, and A was obtained after uniform stirring. 44 grams of isopropylamine was added to a solution of 1.5 grams of aluminum sulfate and 244 grams of water, and B was obtained after uniform stirring. Add B to A, stir vigorously for 24 hours, adjust the acidity and alkalinity of the system with 15.1 g of 98% concentrated sulfuric acid, and then continue to vigorously stir for 12 hours to obtain the initial colloid. The molar composition of the initial colloid is: SiO 2 / Al 2 O 3 =300, R / SiO 2 =0.56, OH - / SiO 2 =0.08, Na / SiO 2 = 0.4, H 2 O / SiO 2 =55, the added amount of ZSM-22 molecular sieve is 0.26 of the weight of silica. The initial colloid was transferred to a 2000 ml autoclave, and after sealing, the stirring speed was adjusted to 300 revolutions per minute, and the temp...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap