Catalyst and method for synthesizing methyl glycollate and ethylene glycol by virtue of dimethyl oxalate hydrogenation
A technology of methyl glycolate and dimethyl oxalate, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of poor stability, low catalyst activity, etc. problems, to achieve mild reaction conditions, high activity, and good selectivity.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0031] Dissolve 23.6g of silver nitrate in 100mL of water, immerse 100g of titanium dioxide in the prepared solution, soak for 2 hours, separate the solid after fully absorbed, dry at 80°C for 4 hours, and then roast at 400°C for 5 The catalyst was produced after hours. After sieving the catalyst, take 20-30 mesh particles, fill them in a fixed-bed reactor, pass through hydrogen for reduction at 300°C for 4 hours, and then react at a reaction temperature of 250°C, a pressure of 2.5Mpa, and a hydrogen ester molar ratio of 50 , Feed liquid hourly space velocity 0.7h -1 Hydrogenation reaction was carried out under certain conditions, and the reaction results obtained: the conversion rate of dimethyl oxalate was 98.3%, the selectivity of methyl glycolate was 94.1%, the selectivity of ethylene glycol was 5.1%, and the yield of methyl glycolate was 92.5%. , and no carrier components were detected in the product.
Embodiment 2
[0033]Dissolve 23.6g of silver nitrate in 90mL of water, immerse 100g of titanium dioxide into the prepared solution, soak for 2 hours, and after complete absorption, dry the solid at 80°C for 4 hours, and then bake it at 300°C for 4 hours The catalyst is prepared. After sieving the catalyst, take 20-30 mesh particles, fill them in a fixed-bed reactor, pass through hydrogen for reduction at 300°C for 4 hours, and then react at a reaction temperature of 240°C, a pressure of 2.5Mpa, and a hydrogen ester molar ratio of 50 , Feed liquid hourly space velocity 0.7h -1 Hydrogenation reaction was carried out under certain conditions, and the reaction results obtained: the conversion rate of dimethyl oxalate was 98.2%, the selectivity of methyl glycolate was 93.1%, the selectivity of ethylene glycol was 6.1%, and the yield of methyl glycolate was 91.4%. , and no carrier components were detected in the product.
Embodiment 3
[0035] Dissolve 23.6g of silver nitrate in 100mL of water, immerse 100g of carbon nanotubes in the prepared solution, soak for 2 hours, separate the solid after full absorption, dry at 80°C for 4 hours, and then roast at 400°C for 5 hours The catalyst is then prepared. After sieving the catalyst, take 20-30 mesh particles, fill them in a fixed-bed reactor, pass through hydrogen for reduction at 300°C for 4 hours, and then react at a reaction temperature of 250°C, a pressure of 2.5Mpa, and a hydrogen ester molar ratio of 50 , Feed liquid hourly space velocity 0.7h -1 Hydrogenation reaction was carried out under certain conditions, and the reaction results obtained: the conversion rate of dimethyl oxalate was 99.3%, the selectivity of methyl glycolate was 97.1%, the selectivity of ethylene glycol was 2.1%, and the yield of methyl glycolate was 96.4%. , and no carrier components were detected in the product.
PUM
Login to view more 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