A kind of catalytic cracking catalyst and its preparation method and application
A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as poor coke selectivity, achieve low coke selectivity, high catalytic cracking activity, and increase the content of mesopores Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0035] In the preparation method of the above-mentioned mesoporous active silicon-phosphorus-aluminum material, the steps before obtaining the solid product can be carried out with reference to the method disclosed in CN1565733A.
[0036] Specifically, the aluminum source may be various existing substances that can be converted into alumina, for example, may be selected from one or more of aluminum nitrate, aluminum sulfate and aluminum chloride.
[0037] The alkaline solution can be various existing alkaline substances, for example, it can be selected from one or more of ammonia water, sodium hydroxide solution, potassium hydroxide solution and sodium metaaluminate solution. Wherein, the concentration of the alkaline solution can be conventionally selected in the art, and will not be repeated here.
[0038] The silicon source can be various existing substances that can be converted into silicon oxide, for example, it can be selected from one or more of water glass, sodium sil...
preparation example 1
[0064] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and its preparation method.
[0065] With a concentration of 90gAl 2 o 3 / L Al 2 (SO 4 ) 3 solution and concentration of 102gAl 2 o 3 / L, NaAlO with a caustic ratio of 2.5 2 The solution is the reaction raw material, co-flow at 85°C to form a gel and control the pH value of the gel to be 9.5, collect a certain amount of gel solution, and press SiO under stirring 2 :Al 2 o 3 =1:6.56 The ratio of adding concentration is 60gSiO 2 / L of sodium water glass, heated to 70 ° C for 2 hours to obtain a solid precipitate. use NH 4 Cl solution by solid precipitate (dry basis): NH 4 Cl:H 2 The weight ratio of O=1:0.8:15 was used to ion-exchange the solid precipitate at 60°C to remove sodium ions. The ion exchange was repeated twice for 0.5 hours each time. After filtration, the sodium oxide content was less than 0.3% by weight. The...
preparation example 2
[0068] This preparation example is used to illustrate the mesoporous active silicon-phosphorus-aluminum material provided by the present invention and its preparation method.
[0069] Prepare mesoporous active silicon-phosphorus-aluminum material according to the method of Preparation Example 1, the difference is that the amount of diammonium hydrogen phosphate makes P 2 o 5 : dry basis of solid product=0.095:1, then reacted at 70°C for 2 hours, filtered and washed with water, and dried at 120°C for 10 hours to obtain a mesoporous active silicon-phosphor-aluminum material, denoted as A-2.
[0070] The mesoporous active silicon phosphorus aluminum material A-2 has a pseudoboehmite structure, and its X-ray diffraction spectrum is similar to that of the mesoporous active silicon phosphorus aluminum material A-1. Measured by X-ray fluorescence analysis, the chemical composition of the mesoporous active silicon-phosphor-aluminum material A-2 in terms of weight ratio of oxide is: 0...
PUM
Property | Measurement | Unit |
---|---|---|
specific surface area | aaaaa | aaaaa |
pore size | aaaaa | aaaaa |
specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com