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

Preparation method of catalyst for hydrogen production from methanol-steam reforming

A technology for reforming hydrogen production and catalysts, which is applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., and can solve problems such as price restrictions, general promotion and application, easy deactivation, etc.

Inactive Publication Date: 2009-07-08
SHANGHAI INST OF TECH
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The hydrogen production reaction of methanol steam reforming (MSR) is used as an alternative hydrogen source for fuel cells, especially proton exchange membrane fuel cells (PEMFC). The price of methanol restricts the widespread application of steam reforming of methanol to produce hydrogen
Copper catalysts have been favored in recent years due to their advantages of low cost and high catalytic activity. However, due to the disadvantages of CuZnAl and CuCr catalysts are easily deactivated in the hydrogen production process of methanol steam reforming and have a certain amount of CO by-products. Limiting the direct application of copper catalysts to the hydrogen source of PEMFC

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
  • Preparation method of catalyst for hydrogen production from methanol-steam reforming
  • Preparation method of catalyst for hydrogen production from methanol-steam reforming
  • Preparation method of catalyst for hydrogen production from methanol-steam reforming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] a. The catalyst is prepared by co-current co-precipitation method, and copper nitrate, zinc nitrate and aluminum nitrate are dissolved in distilled water according to the molar percentage of metal atoms Cu:Zn:Al=45.0:45.0:10.0, at 59~61°C with 1mol.L -1 The sodium carbonate solution was added dropwise for co-precipitation, fully stirred during the precipitation process, and the pH value was kept at about 7.0, after 1 hour of reaction, suction filtration, the filter cake was washed with deionized water for 6 to 7 times, and dried at 120°C 12h, and finally baked at 350°C for 4h to prepare Cu / ZnO / Al 2 o 3 catalyst;

[0013] b. add the Cu / ZnO prepared by step a in the mixed solution of zirconium oxychloride and cerium nitrate according to the molar percentage of metal atoms Cu:Zn:Al:Zr:Ce=40.9:40.9:9.2:7.2:1.8 / Al 2 o 3 Catalyst (particle size>200 mesh) and keep stirring to form a suspension, then slowly drop 1mol.L at 60°C -1 Sodium carbonate solution, until the pH v...

Embodiment 2

[0020] The catalyst preparation method and activity evaluation method are the same as in Example 1, and the molar percentage ratio of metal atoms is Cu:Zn:Al:Zr:Ce=37.7:37.7:19.0:4.7:0.9. Reaction condition: H 2 O / CH 3 OH=1.1 / 1 (molar ratio), WHSV=3.60h -1 .g -1 , T=230°C, P=0.1MPa, see Table 2 for the evaluation results.

[0021] Table 2

[0022]

Embodiment 3

[0024] The catalyst preparation method and activity evaluation method are the same as in Example 1, and the molar percentage ratio of metal atoms is Cu:Zn:Al:Zr:Ce=43.2:43.2:4.5:7.3:1.8. Reaction condition: H 2 O / CH 3 OH=1.1 / 1 (molar ratio), WHSV=3.60h -1 .g -1 , T=230°C, P=0.1MPa, see Table 3 for the evaluation results.

[0025] table 3

[0026]

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 method for preparing a catalyst for hydrogen production from methanol steam reforming, comprising the following steps: a. by adopting cocurrent coprecipitation method, dissolving copper nitrate, zinc nitrate and aluminum nitrate in the distilled water and to undergo cocurrent dripping and coprecipitation with the sodium carbonate solution, fully stirring, controlling the PH value to be about 7.0, and leaching, drying and baking after reaction to produce the catalyst Cu / ZnO / Al2O3; b. adding the obtained catalyst Cu / ZnO / Al2O3 into the mixed solution of zirconium oxychloride and cerium nitrate and stirring continuously to produce a suspension, dripping the sodium carbonate solution, controlling the PH value to be 7.0, and then leaching, washing, drying and baking after ageing to produce the product. In the invention, a layer of CeO2-ZrO2 is coated on the surface of the catalyst Cu / ZnO / Al2O3 so as to stabilize the oxygen species in the copper component on the catalyst surface, accelerate the dissociation absorption of the water and improve the activity and stability of the catalyst for hydrogen production from methanol steam reforming.

Description

technical field [0001] The present invention relates to a preparation method of a catalyst for steam reforming of methanol to produce hydrogen, in particular to a modified Cu / ZnO / Al catalyst used for steam reforming of methanol to produce hydrogen 2 o 3 Catalyst preparation method. Background technique [0002] The hydrogen production reaction of methanol steam reforming (MSR) is used as an alternative hydrogen source for fuel cells, especially proton exchange membrane fuel cells (PEMFC). The price of methanol steam reforming has limited the widespread application of hydrogen production. Copper catalysts have been favored in recent years due to their advantages of low cost and high catalytic activity. However, due to the disadvantages of CuZnAl and CuCr catalysts are easily deactivated in the hydrogen production process of methanol steam reforming and have a certain amount of CO by-products. This limits the direct application of copper catalysts to the hydrogen source of ...

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 Applications(China)
IPC IPC(8): B01J23/80B01J21/04B01J37/03C01B3/32
Inventor 吴贵升毛东森卢冠忠
Owner SHANGHAI INST OF TECH
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