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

Catalyst for preparing CO by reverse water gas shift method and preparation method thereof

A water-gas shift, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, carbon monoxide, etc., can solve the problems of weakening atom economy, harsh synthetic route conditions, high cost, etc., to enrich surface defects, improve Effects of valence band energy levels and electron transport efficiency

Active Publication Date: 2021-06-22
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that due to CH 4 With a relatively stable chemical structure and high C-H bond activation energy, using it as a raw material to prepare alcohols, hydrocarbons and other chemicals is more demanding and expensive than the synthetic route using CO as a raw material, which indirectly weakens the CO 2 Atom economy as carbon source

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 CO by reverse water gas shift method and preparation method thereof
  • Catalyst for preparing CO by reverse water gas shift method and preparation method thereof
  • Catalyst for preparing CO by reverse water gas shift method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A. Weigh 0.36g of palladium chloride and dissolve it in 50ml of deionized water to prepare an active component solution with a concentration of 0.04mol / L; weigh 10g of cerium oxide powder and immerse it in the solution and age it at 25°C for 24h; The final powder was dried in an oven at 120° C. for 10 hours, and then placed in a muffle furnace and calcined at 450-500° C. for 20 hours to obtain catalyst precursor 1 with a palladium mass percentage of 2 wt.%.

[0028] B. Weigh 1.6g of anhydrous cerium chloride and mix it with the catalyst precursor 1 obtained in step A, and then perform mechanical grinding. The molar ratio of anhydrous cerium chloride to cerium oxide in the precursor 1 is 1:3.

[0029] C. Put the mixed powder in a He atmosphere and raise the temperature to 300°C and heat treatment at constant temperature for 3h; then raise the temperature to 500°C at a rate of 2°C / min, and switch the atmosphere to H 2 atmosphere and heat treatment at constant temperature ...

Embodiment 2

[0033] Steps A~C are the same as in Example 1;

[0034] The mass of ammonium iodide added in step D is 33.7g, and the molar ratio of ammonium iodide to the cerium element in the catalyst precursor 2 is 3:1;

[0035] O in step E 2 / N 2 O in the atmosphere 2 The concentration is 20%.

[0036] The I / Pd molar concentration ratio on the catalyst surface was measured to be 0.31. The application performance results are shown in Table 1.

Embodiment 3

[0038] Steps A~D are the same as in Example 1,

[0039] The oxidation-reduction process described in step E is carried out 3 times in a cycle.

[0040] The I / Pd molar concentration ratio on the catalyst surface was measured to be 0.37. The application performance results are shown 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 provides a catalyst for preparing CO by a reverse water gas shift method and a preparation method thereof, the catalyst expression is Pd-I / CeO 2 , wherein the mass percentage of Pd is 1-4wt.%, and the surface I / Pd molar ratio is 0.2-0.5. The present invention finely controls the preparation process of the catalyst, first expands the crystal lattice of cerium oxide through chlorine atoms, then dopes iodine atoms into the catalyst, and finally removes the excessively doped iodine element through the oxidation-reduction cycle process to obtain a catalyst with a specific structure and performance catalysts. The catalyst is used in the reaction of preparing CO by the reverse water gas shift method, the conversion rate of CO in the reaction zone of 400-600 DEG C is 26.2-50%, and the selectivity of CO is 97-99%. Significantly higher than existing catalysts.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, the field of coal chemical industry, and the field of carbon-resource recycling, in particular to a catalyst for producing CO by a reverse water-gas shift method and a preparation method thereof. Background technique [0002] Production of CO / H in coal gasification, methane reforming or methanol cracking 2 During the industrialization of syngas, there is often a large amount of CO 2 impurity gas as the main component. This part of impurity gas is generally separated by technical means such as pressure swing adsorption separation and directly discharged into the atmosphere. This will bring a series of severe environmental problems such as the greenhouse effect in the long run. On the other hand, CO 2 Can be regarded as a safe and recyclable carbon source, although in recent years people have 2 Recycling technologies and absorbent materials are increasingly being explored, but are ...

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): B01J27/13C01B32/40
CPCB01J27/13C01B32/40
Inventor 姚元根乔路阳周张锋宗珊珊崔国静吴娟许东杰
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER 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