A method for converting low-carbon alkanes into aromatics
A technology for low-carbon alkanes and aromatic hydrocarbons, which is applied in the field of converting low-carbon alkanes into aromatic hydrocarbons, can solve problems such as limited improvement range, and achieve the effects of improving the conversion rate, promoting the generation of aromatic hydrocarbons, and promoting the thermal effect.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0026] Preparation of catalyst
[0027] Weigh 82 grams of pseudo-boehmite, with 77 grams of SiO 2 / Al 2 o 3 Mix the ZSM-5 molecular sieve with a molar ratio of 40 evenly, then add 30 grams of 0.8% nitric acid aqueous solution, continue kneading for 2 hours, shape the obtained mixture with an extruder, dry it at 80°C for 24 hours, and heat it at 550°C Calcined for 4 hours to obtain a catalyst carrier with a ZSM-5 content of 60%.
[0028] Get carrier 30 grams, with 30 grams containing zinc nitrate 6%, lanthanum nitrate 2.2%, copper nitrate 2%, phosphoric acid 2% mixed solution impregnation 5 hours, 120 ℃ of drying 12 hours, 550 ℃ of roasting 4 hours, obtain catalyst A. According to ICP analysis, the content of zinc oxide in catalyst A is 2%, that of lanthanum oxide is 1.1%, that of copper oxide is 1.3%, and that of phosphorus is 1.1%.
Embodiment 2
[0030] Catalyst carrier is prepared by the method of embodiment 1, difference is the SiO of ZSM-5 zeolite 2 / Al 2 o 3 The molar ratio is 100, and the added amount of molecular sieve is 90 grams, and the catalyst carrier with ZSM-5 mass of 62% is prepared.
[0031] Get 30 grams of catalyst carriers prepared by the above method, prepare catalyst B with the steps in Example 1, the difference is that the impregnation solution is composed of 10% zinc nitrate, 3% lanthanum nitrate, 5% copper nitrate, a mixed solution of phosphoric acid 3%, The content of zinc oxide in the prepared catalyst B was 4.2%, that of lanthanum oxide was 1.4%, that of copper oxide was 2.9%, and that of phosphorus was 1.5%.
Embodiment 3
[0033] Prepare catalyst carrier by the method for embodiment 2, difference is to adopt ZSM-11 zeolite, SiO 2 / Al 2 o 3 The molar ratio is 70, and the added amount of molecular sieve is 90 grams, and the catalyst carrier with ZSM-11 mass of 62% is prepared.
[0034] Get 40 grams of catalyst carriers prepared by the above method, prepare catalyst C with the steps in Example 2, the difference is that the impregnating solution consists of 10% zinc nitrate, 1.8% cerium nitrate, 5% copper nitrate, a mixed solution of phosphoric acid 3%, The composition of the metal supported on the catalyst is 4.2% of zinc oxide, 0.9% of cerium oxide, 2.9% of copper oxide and 1.5% of phosphorus.
PUM
| Property | Measurement | Unit |
|---|---|---|
| crystal size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More