Silicon oxide-aluminium oxide and its preparing method
A technology of silica and alumina, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low catalytic activity and achieve the effect of high catalytic cracking activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] The mother liquor of synthetic mordenite was used as silicon source to prepare silica-alumina.
[0027] Specifically: take by weighing 24 grams of sodium aluminate (product of Shanghai Jiangpu Chemical Products Factory, the same below), add 400 ml of deionized water to dissolve; slowly add this solution to 544 milliliters of water glass (water glass, modulus: 3.26, SiO 2 279.8 g / L, Na 2 O 87.3 g / L, Changling Catalyst Factory product, the same below), in the synthesis kettle at 180°C for 7 hours at a constant temperature, and filtered after cooling down to room temperature to obtain the mother liquor a of the synthetic molecular sieve. Of which SiO 2 The content is 10g / 100ml.
[0028] Concentration is that 10% aluminum nitrate (aluminum nitrate is the commercially pure product that Changling Catalyst Factory produces) solution 285 milliliters and concentration are 295 milliliters of 8% ammoniacal solutions and join in the reaction tank of a 2 liters simultaneously wit...
Embodiment 2
[0031] Silica-alumina was prepared by using the mother liquor of synthetic Y-type zeolite as silicon source.
[0032] Specifically: take 100 milliliters of water glass, add high alkalinity sodium metaaluminate (abbreviated as high partial, product of Changling Catalyst Factory) under stirring at room temperature, wherein Na 2 O 296 g / l, Al 2 o 3 42.5 g / L) in 75 ml to obtain solution b1.
[0033] With 432 milliliters of water glass sequence and 67.8 milliliters of solution b1, low alkalinity sodium metaaluminate (abbreviation low partial, is taken from Changling Catalyst Factory, wherein Na 2 O 156.2 g / L, Al 2 o 3 103.7 g / L) 95.4 ml, aluminum sulfate (Al 2 o 3 90 g / L) and 94 ml of deionized water were mixed, vigorously stirred and crystallized at 95° C. for 6 hours in a synthesis kettle, cooled to room temperature and then filtered to obtain the mother liquid b of the synthetic molecular sieve. Of which SiO 2 The content is 15g / 100ml.
[0034]Concentration is that 1...
Embodiment 3
[0036] Silica-alumina was prepared by using the mother liquor of ZSM-5 zeolite as silicon source.
[0037] Specifically: weigh NaAlO 2 1.0 g was dissolved in 100 ml of deionized water, then 2.59 g of TEABr (tetraethylammonium bromide) and 0.86 g of NaOH were added respectively. After dissolving, 100 ml of deionized water was added for dilution, and 58.57 g of silica sol was added under stirring, and then water was added to 360 ml, stand at room temperature for 30 minutes, then crystallize in a synthesis kettle at 200°C for 3 hours, cool down to room temperature and filter to obtain the mother liquid c of the synthetic molecular sieve. Of which SiO 2 The content is 8 g / 100 ml.
[0038] Concentration is that 10% aluminum nitrate (aluminum nitrate is the commercially pure product that Changling Catalyst Factory produces) solution 385 milliliters and concentration are 395 milliliters of ammoniacal solution 395 milliliters and join in the reaction tank of a 2 liters simultaneous...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| modulus | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More