Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for synthesizing 2-pentanone by usig ethanol

A technology of ethanol and pentanone, applied in the field of synthesis of 2-pentanone from ethanol, which can solve problems such as complex process, high production cost, and environmental pollution

Inactive Publication Date: 2005-08-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional synthesis process of 2-pentanone is the oxidative dehydrogenation of 2-pentanol or the co-heating of ethyl butyroacetate and water. Not only the production cost is high, but also the synthesis process uses a large amount of organic solvents and inorganic substances, resulting in a large amount of The three wastes pollute the environment
In addition, this process can also catalyze the synthesis of other higher ketones, while the traditional process of synthesizing higher ketones uses organic reactions such as aldol condensation reactions to synthesize them. The process is complex and requires three reactions (aldol condensation, dehydration and hydrogenation reactions) can be completed, and produce a large amount of three wastes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0008] The synthesis of 2-pentanone from ethanol was carried out in a fixed-bed reactor (Φ9×450mm). Anhydrous ethanol is used as raw material, and the catalyst is K-Pd / ZrO 2 / MnO / ZnO, the particle size of the catalyst is 20-40 mesh, and the loading capacity is 2ml. The catalyst is reduced with hydrogen before use, the reduction temperature is 420°C, the reduction pressure is 2.0MPa, after reduction, the temperature is lowered to 370°C, nitrogen is used as the carrier gas, the pressure is increased to 2.0MPa, and the gas space velocity is 10000h -1 , ethanol is pumped in by a micro plunger, and the liquid space velocity is 0.5h -1 , tail gas was analyzed on-line with HP 4890 gas chromatograph (TCD detector, Porapak QS packed column), and the condensate was analyzed on VARIAN 3800 gas chromatograph (FID detector, HP-FFAP capillary column) with n-amyl alcohol as internal standard .

example 2

[0010] The reaction gas space velocity is 12000h -1 , other conditions are the same as example 1.

example 3

[0012] The reaction gas space velocity is 8000h -1 , other conditions are the same as example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A process for synthesizing pentone from ethanol features the reaction between ethanol and catalyst K-Pd / ZrO2 / MnO / ZnO in initial gas. Its advantages are high conversion rate (100%) and selectivity. Its separation method is distilling.

Description

technical field [0001] The invention relates to a method for synthesizing 2-pentanone with ethanol, in particular to a method for synthesizing 2-pentanone with ethanol through heterogeneous catalysis in one step. Background technique [0002] 2-Pentanone is an important industrial solvent, used for dewaxing of high-boiling petroleum fractions, and also used as an intermediate in the synthesis of medicines and pesticides, such as 2-Pentanone is an intermediate in the synthesis of the vasodilator drug Viagra (Virga) . The traditional synthesis process of 2-pentanone is the oxidative dehydrogenation of 2-pentanol or the co-heating of ethyl butyroacetate and water. Not only the production cost is high, but also the synthesis process uses a large amount of organic solvents and inorganic substances, resulting in a large amount of The three wastes pollute the environment. In addition, this process can also catalyze the synthesis of other higher ketones, while the traditional proc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C45/41C07C49/04
Inventor 丁云杰何代平陈维苗罗洪原
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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