Catalyst for propane dehydrogenation to propylene, preparation method and application thereof
A propane dehydrogenation and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems such as low propane conversion rate and propylene selectivity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0040] This example is used to illustrate the preparation of the catalyst for propane dehydrogenation to propylene provided by the present invention.
[0041] Preparation: impregnate 60g of γ-alumina (Shandong Aluminum) in 0.03mol / L chloroplatinic acid (Sinopharm Chemical Reagent Co., Ltd.) and 0.1mol / L bismuth nitrate (provided by Beijing Zhonglian Chemical Factory) at 75°C Co-immerse in aqueous solution for 0.5h, wherein the volume of the solution is measured according to the mass content of the catalyst component, and after drying by rotary evaporation at 75°C for 0.5h, the material is placed in a muffle furnace and roasted in an air atmosphere of 450°C 3h, the catalyst precursor I was obtained. The obtained catalyst precursor I was immersed in 0.2mol / L tin protochloride (Tianjin Guangfu Institute of Fine Chemical Industry) aqueous solution, wherein the volume of the solution was measured according to the mass content of the catalyst components. After drying by rotary evap...
Embodiment 2
[0045] Preparation: The preparation method is the same as in Example 1, but the active components of the catalyst and the mass content of the auxiliary agent are different, and the catalyst 2 is prepared, and its composition is Al 2 o 3 / Pt / Sn-C-Bi.
[0046] Based on the total mass of catalyst 2, the mass content of each component in catalyst 2 is shown in Table 1.
[0047] Detection: Fill the catalyst 2 in the fixed bed reactor, the filling volume is 30mL, and the volume space velocity of the propane feed is controlled to be 500h -1 , the reaction pressure is normal pressure, the inlet temperature of the reactor is 570° C., and the reaction is carried out for 3 hours. The propane dehydrogenation products are analyzed by HP7890 gas chromatography. The test results are shown in Table 2.
Embodiment 3
[0049] Preparation: The preparation method is the same as in Example 1, but the active components of the catalyst and the mass content of the auxiliary agent are different, and the catalyst 3 is prepared, and its composition is Al 2 o 3 / Pt / Sn-C-Bi.
[0050] Based on the total mass of catalyst 3, the mass content of each component in catalyst 3 is shown in Table 1.
[0051] Detection: Fill the catalyst 3 in the fixed bed reactor, the filling volume is 30mL, and the volume space velocity of the propane feed is controlled to be 1600h -1 , the reaction pressure is normal pressure, the inlet temperature of the reactor is 600° C., and the reaction is carried out for 3 hours. The propane dehydrogenation products are analyzed by HP7890 gas chromatography. The test results are shown in Table 2.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More