Isomerization dewaxing catalyst and its prepn.
An isomerization dewaxing and catalyst technology, which is used in petroleum wax recovery, petroleum industry, processing of hydrocarbon oil, etc., can solve the problems of low activity and selectivity, weak catalyst acidity, etc., and achieve high yield and viscosity index, strong acidity. , good stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0036] The synthesis of embodiment 1SAPO-11 molecular sieve
[0037] The SAPO-11 molecular sieve was synthesized according to the method reported in the existing literature. Mix 230 grams of 85w% orthophosphoric acid with 300 grams of deionized water, then add 410 grams of aluminum isopropoxide, stir until uniform, then add 208 grams of ethyl orthosilicate, 91 grams of diisopropylamine, and 78 grams of pyridine , 400 grams of n-hexanol and 420 grams of deionized water and fully stirred to obtain a gel.
[0038] The above gel was sealed in an autoclave lined with polytetrafluoroethylene, crystallized at a constant temperature of 190°C for 48 hours, and the solid obtained by filtering the product was washed with water, dried at 110°C for 4 hours, and then subjected to X-ray powder diffraction measurement. Table 1 column data.
[0039] Table 1
[0040] Peak No. 2Theta(°) d-value 100×I / I 0
[0041] 1 8.10 10.9063 20
[0042] 2 9.50 9.3020 26
...
Embodiment 2
[0055] A kind of preparation method 1 of catalyst among the embodiment 2 present invention
[0056] (1) Get SAPO-11 molecular sieve 200g, pseudo-boehmite (dry basis 72w%) 900g and citric acid 30g and mix uniformly;
[0057] (2) Measure 270ml of water and 70ml of acetic acid and mix evenly, then add 21g of SB powder (70w% on a dry basis) to the mixed solution, stir for 20min, and prepare an adhesive;
[0058] (3) Fully knead the mixed powder obtained in step (1), the adhesive obtained in step (2) and an appropriate amount of water on a roller compactor to make it a paste-like plastic, and the extruded diameter on the extruder is 1.5 mm cylindrical bars;
[0059] (4) Dry the cylindrical bar obtained in step (3) at 110°C for 6 hours, and then bake it at 550°C in an air atmosphere for 4 hours to obtain the carrier Sa 2 , see Table 2 for properties.
[0060] (5) 200 grams of the carrier Sa obtained in step (4) 2 Add it into a 1000 ml round bottom flask containing 500 g of pyrid...
Embodiment 3
[0062] A kind of preparation method 2 of catalyst among the embodiment 3 present invention
[0063] (1) get SAPO-11 molecular sieve 425g, boehmite (dry basis 72w%) 590g and graphite powder 20g mix homogeneously;
[0064] (2) Measure 220ml of water and 60 grams of oxalic acid and stir to dissolve, then add 210g of SB powder (70w% on a dry basis) to the oxalic acid solution, stir for 20min, and prepare an adhesive;
[0065] (3) Fully knead the mixed powder obtained in step (1), the adhesive obtained in step (2) and an appropriate amount of water on a roller compactor to make it a paste-like plastic, and the extruded diameter on the extruder is 1.5 mm clover strips;
[0066] (4) Dry the clover-shaped strips obtained in step (3) at 110°C for 6 hours, and then bake them at 550°C in an air atmosphere for 4 hours to obtain the carrier Sa 3 , see Table 2 for properties.
[0067] (5) Get the carrier Sa obtained in 200 grams of step (4) 3 Add it into a 1000 ml round bottom flask con...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More