Method and catalysts for the epoxidation of olefinic compounds in the presence of oxygen
A technology of epoxides and compounds, applied in the direction of metal/metal oxide/metal hydroxide catalysts, organic compounds/hydrides/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of low epoxidation Productivity and other issues
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1a
[0102] Example 1a: Based on CeO comprising Au in its composition 2 Preparation of the metal catalyst "CAT A" of substance. [Au / CeO2 ]
[0103] For depositing gold (Au) particles on the surface of ceria, using the dipping method, HAuCl 4 As the Au source, the detailed experimental procedure follows. 0.2M NaOH solution was added (dropwise) to 0.6 g of HAuCl diluted in 70 ml of water 4 -3H 2 O (Milli-Q mass) so that pH=10. With continuous, vigorous stirring, this Au salt solution in water (pH=10) was added to 5.7 g of CeO contained in 200 ml of water 2 (Milli-Q quality) container. The mixture thus obtained was kept stirring at room temperature for 15-16 hours, and once the solid was recovered by filtration, it was rinsed thoroughly with water and dried using a heater at 100° C. for about 12 hours. The thus-synthesized substances were fully classified using various spectroscopic techniques and chemical methods, and finally the sample Au / CeO 2 , with a solid weight of about...
Embodiment 1b
[0104] Example 1b: Preparation of a metal catalyst "CAT A" based on a mesoporous molecular sieve of type MCM-41 comprising Au in its components. [Au / MCM-41]
[0105] For the deposition of gold (Au) particles on the surface of MCM-41 type porous molecular sieves (molar ratio Si / Al = infinite), the impregnation method, HAuCl 4 As the Au source, the detailed experimental procedure follows. 0.2M NaOH solution was added (dropwise) to 1.2 g of HAuCl diluted in 100 ml of water 4 ·3H 2 O (Milli-Q mass) so that pH=10. Under constant, vigorous stirring, this Au salt solution in water (pH = 10) was added to a vessel containing 5.0 g of MCM-41 material (Milli-Q quality) in 200 ml of water. The mixture thus obtained was kept stirring at room temperature for 15-16 hours, and once the solid was recovered by filtration, it was rinsed thoroughly with water and dried using a heater at 100° C. for about 12 hours. The material thus synthesized was fully classified using various spectroscopic...
Embodiment 2a
[0106] Example 2a: Preparation of a metal catalyst "CAT T" based on a mesoporous molecular sieve of type MCM-41 comprising Ti in its components. [Ti-MCM-41]
[0107] 3.11 g of cetyltrimethylammonium bromide (CTAB) were dissolved in 20.88 g of water. To this solution was added 5.39 g of tetramethylammonium hydroxide (TMAOH) and 0.21 g of tetraethoxytitanium (TEOT), which was stirred until the titanium was fully dissolved. Then 3.43 g of silica were added, which was stirred at 250 rpm for 1 hour at room temperature to produce a gel. The resulting mixture was placed in an autoclave and heated at 100° C. for 48 hours under the self-pressure of the system. After this time, the solid was recovered by filtration, rinsed thoroughly with distilled water, and dried at 60°C for 12 hours. The solid matter thus obtained was placed in a tubular quartz reactor and subjected to a rate of 50 ml min -1 dry noise nitrogen flow, while the temperature is set at 3°C·min -1 was increased to 540...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to view more - 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.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap