Effective catalyst used in hydrogenation of dimethyl oxalate to synthesizing ethylene glycol and production method thereof
A technology of dimethyl oxalate and ethylene glycol, applied in the field of chemical industry, can solve problems such as unindustrialized reports, and achieve the effects of excellent hydrogenation activity and ethylene glycol selectivity, high pore structure, and improved selectivity and stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0025] Embodiment 1: Carrier HMS is synthesized
[0026] Add 5.04g of dodecylamine to a solution consisting of 100ml of water and 70ml of ethanol and stir vigorously for 30min, add 90ml of ethanol solution containing 30ml tetraethyl orthosilicate, stir vigorously at 30°C for 4h, let it stand for 24h, and wash it in Dry at 100°C for 12h, then calcined at 650°C for 4h, and finally obtain carrier HMS with regular hexagonal mesoporous structure.
Embodiment 2
[0027] Embodiment 2: Cu:Mn / HMS-1# catalyst
[0028] The first step: 15.25g Cu(NO 3 ) 2 ·3H 2 O and 10.04g Mn(NO 3 ) 2 4H 2 O dissolved in 100ml H 2 Form a metal ion solution in O;
[0029] The second step: in a water bath at 50°C, under stirring, slowly and uniformly drop into an aqueous solution containing 8g of HMS for adsorption;
[0030] The third step: after the dropwise addition, continue to stir at a constant temperature for 4 hours to obtain the precursor;
[0031] Step 4: The precursor is filtered and washed, and dried at 120°C for 12 hours;
[0032] Step 5: Gradually raise the temperature to 650° C. in the muffle furnace at 10° C. / minute, and bake at this temperature for 2 hours at a constant temperature.
[0033] Granulate the catalyst powder into 40-60 mesh, 2 / N 2 The activity evaluation was carried out after the mixed gas was reduced, and it was used to selectively prepare ethylene glycol by the hydrogenation reaction of dimethyl oxalate. The results o...
Embodiment 3
[0034] Embodiment 3: Cu:Mn / HMS-2# catalyst
[0035] The first step: 19.36g Cu(NO 3 ) 2 ·3H 2 O and 4.72g Mn(NO 3 ) 2 4H 2 O dissolved in 100ml H 2 Form a metal ion solution in O;
[0036] The second step: 50 ℃ water bath, under stirring, slowly and uniformly drop into the aqueous solution containing 10g HMS for adsorption;
[0037] The third step: after the dropwise addition, continue to stir at a constant temperature for 4 hours to obtain the precursor;
[0038] Step 4: The precursor is filtered and washed, and dried at 120°C for 12 hours;
[0039] Step 5: Gradually raise the temperature to 650° C. in a muffle furnace at 10° C. / minute, and bake at this temperature for 4 hours at a constant temperature.
[0040] Granulate the catalyst powder into 40-60 mesh, 2 / N 2 The activity evaluation was carried out after the mixed gas was reduced, and it was used to selectively prepare ethylene glycol by the hydrogenation reaction of dimethyl oxalate. The results of the select...
PUM
Property | Measurement | Unit |
---|---|---|
freezing point | 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