Method for preparing acrolein by glycerol dehydration
A technology of acrolein and glycerin aqueous solution, applied in chemical instruments and methods, preparation of carbon-based compounds, preparation of organic compounds, etc., can solve problems such as catalyst deactivation, and achieve high catalytic activity, improved yield, and excellent anti-deactivation resistance. performance effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0024] The preparation of the anti-coking hollow ZSM-5 molecular sieve catalyst and its application in the reaction of glycerol dehydration to prepare acrolein comprises the following steps:
[0025] (1) Mix deionized water and NaAlO 2 After mixing and stirring evenly, add tetrapropylammonium hydroxide aqueous solution with a mass fraction of 25%, and obtain a mixed solution after fully stirring; add tetraethyl orthosilicate dropwise to the mixed solution, and stir fully to hydrolyze tetraethyl orthosilicate Completely, put the above mixed solution into a hydrothermal kettle, crystallize at 120°C for 2h, then heat up to 170°C for 3d, centrifuge, wash, dry, and roast to obtain Na-ZSM-5 molecular sieve; among them, deionized water , NaAlO 2 , The molar ratio of tetrapropylammonium hydroxide aqueous solution and tetraethylorthosilicate is: 500:0.5:2:10;
[0026] (2) Put 1g of Na-ZSM-5 molecular sieve into 20mL of 0.1M inorganic alkali aqueous solution, mix and stir evenly, heat...
Embodiment 2
[0032]The preparation of the anti-coking hollow ZSM-5 molecular sieve catalyst and its application in the reaction of glycerol dehydration to prepare acrolein comprises the following steps:
[0033] (1) Mix deionized water and NaAlO 2 After mixing and stirring evenly, add tetrapropylammonium hydroxide aqueous solution with a mass fraction of 25%, and obtain a mixed solution after fully stirring; add tetraethyl orthosilicate dropwise to the mixed solution, and stir fully to hydrolyze tetraethyl orthosilicate Completely, put the above mixed solution into a hydrothermal kettle, crystallize at 120°C for 4h, then raise the temperature to 170°C for 4d, centrifuge, wash, dry, and roast to obtain Na-ZSM-5 molecular sieve; among them, deionized water , NaAlO 2 , The molar ratio of tetrapropylammonium hydroxide aqueous solution and tetraethylorthosilicate is: 1000:0.2:1:10;
[0034] (2) Put 1g of Na-ZSM-5 molecular sieve into 30mL of 0.2M inorganic alkali aqueous solution, mix and sti...
Embodiment 3
[0040] The preparation of the anti-coking hollow ZSM-5 molecular sieve catalyst and its application in the reaction of glycerol dehydration to prepare acrolein comprises the following steps:
[0041] (1) Mix deionized water and NaAlO 2 After mixing and stirring evenly, add tetrapropylammonium hydroxide aqueous solution with a mass fraction of 25%, and obtain a mixed solution after fully stirring; add tetraethyl orthosilicate dropwise to the mixed solution, and stir fully to hydrolyze tetraethyl orthosilicate Completely, put the above mixed solution into a hydrothermal kettle, crystallize at 100°C for 6h, then raise the temperature to 170°C for 3d, centrifuge, wash, dry, and roast to obtain Na-ZSM-5 molecular sieve; among them, deionized water , NaAlO 2 , The molar ratio of tetrapropylammonium hydroxide aqueous solution and tetraethylorthosilicate is: 600:0.25:2.5:10;
[0042] (2) Put 1g of Na-ZSM-5 molecular sieve into 30mL of 0.15M inorganic alkali aqueous solution, mix and...
PUM
Property | Measurement | Unit |
---|---|---|
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