Preparation method of nano-beta zeolite molecular sieve
A molecular sieve and beta zeolite technology, which is applied in the field of preparation of nano-beta zeolite molecular sieves, can solve the problems of uneven product particle size, time-consuming and complicated preparation methods, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] 0.15 g NaAlO 2 , 0.2 g NaOH, 10 ml of tetraethylammonium hydroxide solution with a mass fraction of 20% and 8 ml of water were stirred evenly, then 3 g of silicon-based mesoporous molecular sieve MCM-41 containing mesoporous template was added under stirring, and stirred at room temperature for 5 After h, a reaction mixture was obtained. The reaction mixture was transferred into a closed autoclave, and hydrothermally crystallized at 140°C for 24 h. The reaction kettle was taken out, and the white precipitate at the bottom of the reaction kettle was separated, washed twice with water, and dried at 40°C for 8 h. The dried white powder was calcined at 550 °C for 6 h to obtain nano-beta zeolite molecular sieves.
Embodiment 2
[0019] 0.2 g NaAlO 2 , 0.25 g NaOH, 15 ml tetraethylammonium hydroxide solution with a mass fraction of 20% and 10 ml water were stirred evenly, then 7 g of silicon-based mesoporous molecular sieve SBA-15 containing mesoporous template was added under stirring, and stirred at room temperature for 10 After one hour, a reaction mixture was obtained, and the reaction mixture was transferred into a closed autoclave, and hydrothermally crystallized at 110°C for 48 h, and the reaction kettle was taken out, and the white precipitate at the bottom of the reaction kettle was separated, washed twice with water, and dried at 60°C for 8 h. The dried white powder was calcined at 550 °C for 5 h to obtain nano-beta zeolite molecular sieves.
Embodiment 3
[0021] 0.15 g NaAlO 2 , 0.2 g NaOH, 12 ml of tetraethylammonium hydroxide solution with a mass fraction of 20% and 16 ml of water were stirred evenly, then 3 g of silicon-based mesoporous molecular sieve MCM-48 containing mesoporous template was added under stirring, and stirred at room temperature for 12 After h, a reaction mixture was obtained, and the reaction mixture was transferred into a closed autoclave, and hydrothermally crystallized at 160° C. for 72 h. The reaction kettle was taken out, and the white precipitate at the bottom of the reaction kettle was separated, washed twice with water, and dried at 40° C. for 20 h. The dried white powder was calcined at 700 °C for 7 h to obtain nano-beta zeolite molecular sieves.
PUM
| Property | Measurement | Unit |
|---|---|---|
| quality score | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More