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

A kind of layered structure copper-based catalyst and its preparation method and application

A copper-based catalyst, layered structure technology, applied in the preparation of hydroxyl compounds, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of poor methanol selectivity, large specific surface area, low conversion rate, etc., and achieve stable reaction performance. , The effect of high catalytic activity and reduction of copper loss

Active Publication Date: 2018-05-04
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome the defective of prior art, provide a kind of layered structure copper-based catalyst and its preparation method and application, described layered structure copper-based catalyst specific surface area is big, the loss of copper is little and dispersion degree is high, has It is beneficial to the adsorption and activation of the reactants, and overcomes the shortcomings of the existing carbon dioxide hydrogenation synthesis methanol catalyst, which has a low conversion rate of carbon dioxide and poor methanol selectivity.

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
  • A kind of layered structure copper-based catalyst and its preparation method and application
  • A kind of layered structure copper-based catalyst and its preparation method and application
  • A kind of layered structure copper-based catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take an appropriate amount of copper nitrate, zinc nitrate, aluminum nitrate, of which Cu 2+ , Zn 2+ and Al 3+ The ratio of the metal is based on the metal, and the molar ratio of various metals is: [n(Cu)+n(Zn)] / n(Al)=2, n(Cu) / n(Zn)=0.5, formulated as total metal ions The concentration of the mixed aqueous solution is 0.5mol / L, the mixed aqueous solution is heated to 80°C, the urea solution is added dropwise to the mixed aqueous solution through a peristaltic pump, and the speed of the peristaltic pump is 45r / min, wherein the concentration of the urea solution is urea: ∑M + =1:1(∑M + is the sum of the total metal ion concentration). During the dropwise addition process, an appropriate amount of nitrogen gas was continuously introduced, and the nitrogen flow rate was controlled by a mass flow meter, and the flow rate was 5 mL / min. Reflux for 6 hours, cool the precipitate, filter, wash, and dry (the drying temperature is 80°C, the drying time is 12h), and then roaste...

Embodiment 2

[0039] Take an appropriate amount of copper nitrate, zinc nitrate, aluminum nitrate, of which Cu 2+ , Zn 2+ and Al 3+ The ratio of the metal is based on the metal, and the molar ratio of various metals is: [n(Cu)+n(Zn)] / n(Al)=4, n(Cu) / n(Zn)=3, formulated as a total metal ion Concentration of 2.0mol / L mixed aqueous solution, heat the mixed aqueous solution to 80°C, urea solution is added dropwise to the mixed aqueous solution through a peristaltic pump, the speed of the peristaltic pump is 80r / min, and the concentration of the urea solution is urea: ∑M + =2.5:1(∑M + is the sum of the total metal ion concentration). During the dropwise addition, an appropriate amount of nitrogen gas was continuously introduced, and the nitrogen flow rate was controlled by a mass flow meter, and the flow rate was 20 mL / min. Reflux for 12 hours, cool the precipitate, filter, wash, and dry (the drying temperature is 100°C, the drying time is 24h), and then roasted at 350°C for 3 hours to obtain...

Embodiment 3

[0041] Take an appropriate amount of copper nitrate, zinc nitrate, aluminum nitrate, of which Cu 2+ , Zn 2+ and Al 3+ The proportion of the metal is calculated, and the molar ratio of various metals is: [n(Cu)+n(Zn)] / n(Al)=6, n(Cu) / n(Zn)=1.5, and the total metal ion is prepared The concentration of the mixed aqueous solution is 3.0mol / L, the mixed aqueous solution is heated to 110°C, the urea solution is added dropwise into the mixed aqueous solution through a peristaltic pump, and the speed of the peristaltic pump is 70r / min, wherein the concentration of the urea solution is urea: ∑M + =6:1(∑M + is the sum of the total metal ion concentration). During the dropwise addition, an appropriate amount of nitrogen gas was continuously introduced, and the nitrogen flow rate was controlled by a mass flow meter, and the flow rate was 8 mL / min. Reflux for 48 hours, cool the precipitate, filter, wash, and dry (the drying temperature is 100°C, the drying time is 24h), and then roasted...

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 discloses a layered structure copper-based catalyst and its preparation method and application. The layered structure copper-based catalyst comprises the following components in weight percentage: Cu: 26-65%; ZnO: 22-52%; Al2O3 :6‑22%. The copper-based catalyst with a layered structure of the present invention has a large specific surface area, a small loss of copper and a high degree of dispersion, which is beneficial to the adsorption and activation of reactants, and overcomes the low conversion rate of catalytic carbon dioxide and methanol selectivity of existing carbon dioxide hydrogenation methanol synthesis catalysts. Poor disadvantages.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a copper-based catalyst with a layered structure, a preparation method thereof and an application in carbon dioxide hydrogenation synthesis of methanol. Background technique [0002] The gradual increase of carbon dioxide emissions in the atmosphere is one of the causes of the greenhouse effect. In addition, the scarcity of fossil fuels has attracted worldwide attention. Methanol is an important chemical raw material, and it is also a clean fuel with development prospects. The hydrogenation of carbon dioxide into methanol can alleviate energy shortage and is expected to solve greenhouse gas control. This process has multiple meanings in chemical industry, energy, and environmental protection. However, carbon dioxide is very stable and difficult to activate, so the key to this process is the development of highly active catalysts. [0003] In industry, the synthesis gas containing carbon...

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): B01J23/80B01J35/10C07C31/04C07C29/154
CPCY02P20/52
Inventor 王慧肖硕高鹏孙予罕魏伟夏林张建明杨海艳
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY 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