A kind of y molecular sieve containing rare earth and preparation method thereof
A molecular sieve and rare earth technology, applied in molecular sieve catalysts, molecular sieves and alkali exchange compounds, chemical instruments and methods, etc., can solve problems such as low micropore volume, and achieve the effect of reducing olefin content, improving heavy oil conversion rate, and suitable rare earth content
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0038] The present disclosure also provides a preparation method of the disclosed rare earth-containing Y molecular sieve, the preparation method comprising: a. NaY molecular sieve is subjected to ammonium exchange treatment, and after filtering and washing, ammonium exchange molecular sieve is obtained; Calculated by sodium oxide and based on the dry weight of the ammonium exchanged molecular sieve, the sodium oxide content of the ammonium exchanged molecular sieve is less than 5% by weight; b, the ammonium exchanged molecular sieve obtained in step a is subjected to the first water vapor Thermal roasting treatment to obtain a water-baked molecular sieve; c, performing the first dealumination treatment on the water-baked molecular sieve obtained in step b in an acid solution composed of an organic acid and an inorganic acid, and after filtering and washing, the first dealuminated molecular sieve is obtained Molecular sieve; d, the first dealuminated molecular sieve obtained in...
Embodiment 1
[0065] Y molecular sieve (produced by Catalyst Qilu Branch, unit cell parameter 24.63 angstroms) and NH 4 Cl and distilled water were mixed and beaten evenly at a ratio of 1:1:10, ammonium was exchanged at 70°C for 1 hour, the sample was filtered, washed, and dried, and the sodium content of the molecular sieve was determined to be less than 5% by weight. The above-mentioned molecular sieves were calcined at 600° C. and 100% steam for 2 hours. Take 100 g (dry basis mass) of the roasted molecular sieve and add water to prepare a molecular sieve slurry with a solid content of 10% by weight, add 3 g of citric acid during stirring, and then add 400 g of hydrochloric acid (mass fraction 10%) for 30 minutes; heat up to a constant temperature of 75 ° C Stir for 1 h, filter and wash until the filtrate is neutral; add water to the filter cake and beat to obtain a molecular sieve slurry with a solid content of 10% by weight, add 10.42 g of NaOH (purity 96%), heat up to 50 ° C and stir a...
Embodiment 2
[0069] Y molecular sieve (produced by Catalyst Qilu Branch, unit cell parameter 24.63 angstroms) and NH 4 Cl and distilled water were mixed and beaten evenly at a ratio of 1:1:10, ammonium was exchanged at 70°C for 1 hour, the sample was filtered, washed, and dried, and the sodium content of the molecular sieve was determined to be less than 5% by weight. The above-mentioned molecular sieves were calcined at 600° C. and 100% steam for 2 hours. Take 100g of roasted molecular sieve (mass on a dry basis) and add water to prepare a molecular sieve slurry with a solid content of 10% by weight, add 5g of oxalic acid during stirring, and then add 200g of sulfuric acid (mass fraction 10%) for 30 minutes; heat up to 30°C and stir at a constant temperature 2h, filter and wash until the filtrate is neutral; add water and beat the filter cake to obtain a molecular sieve slurry with a solid content of 10% by weight, add 31.25g KOH (purity 96%), heat up to 70°C and stir at a constant temper...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| refraction | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More