Production of hydrogen by catalyzed decomposing magnesium and its mixture doped with other metals

A hydrocarbon, catalytic decomposition technology, used in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, non-metallic elements, etc., can solve the problems of difficult removal, deactivation, and short catalyst life. , to achieve the effect of reducing the process of pretreatment, saving cost and time, and selecting a wide range of conditions

Active Publication Date: 2008-12-03
HUZHOU OCHEM CHEM
View PDF23 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in these traditional reaction processes, with the decomposition of alkanes, more and more carbon is generated and cannot be removed at any time, but accumulates on the surface of the catalyst, gradually covering the active center of the catalyst, and isolating it from the reactants, causing the catalyst The catalytic activity is greatly reduced, which eventually leads to the deactivation of
Therefore, the life of catalysts in these processes is generally short, generally no more than 10 hours, or even only a few minutes
In addition, since the surface of the generated carbon-supported catalyst is very firm, it is not easy to remove, which brings great trouble to the regeneration and reuse of the catalyst.

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
  • Production of hydrogen by catalyzed decomposing magnesium and its mixture doped with other metals
  • Production of hydrogen by catalyzed decomposing magnesium and its mixture doped with other metals
  • Production of hydrogen by catalyzed decomposing magnesium and its mixture doped with other metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0014] Embodiment 1~5 Weigh a certain amount of metal catalyst and cocatalyst, pack in the reactor 14 that is furnished with the stainless steel inner tube 15 of one end closure (as figure 1 As shown), the intake pipe 7, the thermocouple 11, and the catalyst are kept in good contact and sealed well. Then the reactor is put into the heating furnace 19, and the height of the reactor is adjusted to ensure uniform heat transfer. Connect the methane cylinder 1 and the reaction pipeline, plug the rubber stopper 9 tightly, and check the device for leaks. Adjust the pressure reducing valve 2 to feed the material so that the air pressure reaches 0.1MPa, open the control valve and use the flow meter 3 and the display device 4 to control the flow rate to 5ml / min. Ventilate for 20 minutes to ensure that other gases in the reactor are flushed out. The heating device includes a temperature controller 5, a thermocouple 11, heating components 12, 13, insulation materials 17, 18, etc. Turn o...

Embodiment 1

[0020]Example 10 Weighed 4 grams of magnesium metal catalyst. The reaction device, operation method, reaction pressure and flow rate were the same as in Example 1, and the reaction temperature was 680° C. After 20 hours of reaction, the analysis results showed that the methane conversion was still stable at 22.0%.

Embodiment 11

[0021] Example 11 Weighed 4 grams of magnesium metal catalyst. The reaction device, operation method and flow rate were the same as in Example 1. The reaction temperature was 700° C. After 20 hours of reaction, the analysis results showed that the methane conversion rate was still stable at 23.0%.

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 method for producing hydrogen and carbon with mixture of metal magnesium and other metals as catalyst by catalytic decomposition is carried out by reacting at 0.01-10Pa and 200-1500degree and separating catalyst from products. It can re-used and not contain CO and CO2 impurities.

Description

technical field [0001] The invention relates to a method for producing hydrogen from hydrocarbons by using a catalyst, in particular to a method for producing hydrogen by using a metal catalyst to catalyze and decompose hydrocarbons. Background technique [0002] As an efficient and clean secondary energy source, hydrogen is widely used in aerospace, oil refining, metallurgy and fine organic synthesis industries; in the ammonia synthesis industry, hydrogen is one of the important synthetic raw materials. In recent years, with the rise of fuel cells, the preparation of high-purity hydrogen as fuel for cells has attracted widespread interest. At present, there are many industrial hydrogen production processes, among which natural gas hydrogen production method has become the main hydrogen production method due to the cheap and easy-to-obtain raw materials and relatively simple process flow, including methane steam reforming method, partial oxidation method, and carbon dioxide ...

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): C01B3/26B01J23/755
CPCB01J21/10C01B3/26
Inventor 王科刘振李文生周小平
Owner HUZHOU OCHEM CHEM
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