Catalyst for preparing ethylamine compounds, preparation method and application thereof

A molybdenum phosphide catalyst and compound technology, which is applied in the field of catalysts for the preparation of ethylamine compounds, can solve the problems of limited application, low product selectivity, environmental impact, etc., and achieve the effect of overcoming long reaction time

Inactive Publication Date: 2010-01-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Raney nickel is generally used as a catalyst, but its selectivity to products is not high. In addition, its preparation requires a large amount of lye, which also has an impact on the environment.
However, precious metals are used as catalysts, which limit their application due to their high price.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for preparing ethylamine compounds, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The pure-phase molybdenum phosphide prepared with a molybdenum-phosphorus ratio of 0.9 was used as a catalyst, and the hydrogenation reaction of acetonitrile was carried out in a miniature fixed-bed reactor. The reaction conditions are: 0.25 g catalyst, temperature 200°C, normal pressure, hydrogen flow rate 20ml / min, temperature of the saturator containing acetonitrile kept at 10°C. The product was analyzed by gas chromatography and hydrogen flame detector.

Embodiment 2-5

[0029] With embodiment 1, just change the feeding ratio of molybdenum phosphorus, reaction result is listed in table 1.

Embodiment 6

[0031] Same as Example 1, except that molybdenum and phosphorus compounds containing molybdenum and phosphorus with a molybdenum-phosphorus ratio of 1 are dissolved and impregnated in a certain quality of SiO 2 On the basis of Mo mass, MoP / SiO with a loading of 30% was prepared 2 . The reaction results are listed in Table 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

The invention relates to a catalyst used for preparing compounds such as ethylamine composed of pure phase molybdenum phosphide of which the molar ratio ranges from 0.50 to 3.00 or agent-loaded molybdenum phosphide of which the molar ratio ranges from 0.8 to 1.5. The catalyst is applied to gas phase acetonitrile to choose hydrogenation in the preparation of compounds such as ethylamine. As for pure phase molybdenum phosphide, the selectivity of the acetonitrile choosing hydrogenation is controlled by simply changing the material feeding ratio of molybdenum and phosphor. When the ratio of the molybdenum and the phosphor is larger than 1.05, the selectivity of the ethylamine is very high; when the ratio of the molybdenum and the phosphor is less than 0.9, the selectivity of diethylamine and triethylamine is very high. As for the carrier-loaded molybdenum phosphide catalyst, the simple change of the type of the carrier can reach the high selectivity of different compounds such as ethylamine, thereby being beneficial for effectively separating the compounds such as ethylamine. The catalyst has simple and practical operation, and is suitable for industrial productions of different compounds such as ethylamine by choosing hydrogenation for acetonitrile.

Description

technical field [0001] The invention relates to a catalyst for preparing ethylamine compounds. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The present invention also relates to the application of the above catalyst in the preparation of ethylamine compounds. Background technique [0004] As a new type of catalytic material, transition metal phosphides have received extensive attention in the research of hydrorefining. However, for many hydrogen-related reactions, such as hydrogenation reaction, ammonia synthesis, NO reduction and electrochemical reduction reaction, there are relatively few studies in this area. However, the application of transition metal phosphides in the selective hydrogenation of acetonitrile has not been reported. [0005] The selective hydrogenation of acetonitrile to prepare amine compounds (ethylamine, diethylamine and triethylamine) has great significance in industrial applications. ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/19B01J32/00C07C209/48C07C211/03
Inventor 李灿杨鹏飞蒋宗轩应品良
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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