Propylene oxidation catalyst and preparation method
A technology of propylene oxidation and catalyst, which is applied in the preparation of carbon-based compounds, chemical instruments and methods, and the preparation of organic compounds, etc. It can solve the problems of reduced reaction efficiency, loss of active components, and large cost expenditures.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] Preparation of Catalyst 1
[0036] Step 1: Prepare catalyst inner layer matrix
[0037] (1) Preparation of active ingredient slurry (a)
[0038] Under stirring conditions, take 197 grams of ammonium molybdate and dissolve in 1000 ml of pure water (water temperature above 65°C) to obtain slurry (1), then take 73 grams of cobalt nitrate, 1.88 grams of potassium nitrate, 112.7 grams of iron nitrate, and 15.1 grams of lanthanum nitrate Dissolve in 500ml of purified water (water temperature above 65°C), stir and mix well to obtain slurry (2). Another 45.1 g of bismuth nitrate was taken and dissolved in dilute nitric acid with stirring to obtain a slurry (3). Then, the slurry (1) is mixed with the slurry (2) to obtain the slurry (4), and then the slurry (3) is added to the slurry (4) to obtain the active ingredient slurry (a).
[0039] (2) Preparation of catalyst inner layer matrix
[0040] Add 61.4 grams of silica powder and 2.5 grams of alumina to the active component s...
Embodiment 2
[0053] Preparation of Catalyst 2
[0054] Same as the preparation steps and main raw materials of catalyst 1 in Example 1, 35.7 grams of silicon dioxide were added to the inner layer, extruded by an extruder, rolled and granulated into a spherical shape with a diameter of 2 mm, and 6.7 grams of silicon dioxide was added to the outer layer and 3.1 grams of silicon carbide. The thickness of the coating is 0.5-2.0 mm, and the catalyst 2 is obtained by roasting at 550° C. for 3 hours. The main composition of catalyst 2 inner layer matrix is: Mo 12 Bi 5 Fe 5 co 6 W 3 K 2 Si 6.4 B 0.5 o x , the main composition of the outer layer is: Mo 12 Bi 5 Fe 5 co 6 W 3 K 2 Si 1.2 B 0.5 o x . The element content of the outer layer is 0.2% to 4.6% higher than that of the inner layer.
Embodiment 3
[0060] Same as the preparation steps and main raw materials of the catalyst 1 in Example 1, 57.5 grams of silicon dioxide and 2.3 grams of silicon carbide were added to the inner layer, which were extruded into hollow columnar particles of φ 5 × 5 mm through an extruder, and 28.5 grams of SiO2 were added to the outer layer. silicon oxide. The thickness of the coating is 0.1-1.5 mm, and the catalyst 3 is obtained by calcining at 400° C. for 6 hours. The main composition of the catalyst 3 inner layer matrix is: Mo 12 Bi 7 Fe 1 co 8 W 0.3 K 3.2 Si 10.3 mn 1.8 o x , the main composition of the outer layer is:
[0061] Mo 12 Bi 7 Fe 1 co 8 W 0.3 K 3.2 Si 5.1 mn 1.8 o x
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More