Catalyst for deep removal of CO, and preparation method thereof

A catalyst and removal technology, used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of not being able to drop below 2ppm, and achieve low equipment requirements, mild reaction conditions, and preparation methods. simple effect

Active Publication Date: 2022-02-25
ZHEJIANG UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, according to the existing reports, the Ni-based catalyst prepared by the disclosed carrier and the conventional method cannot reduce the CO concentration in the hydrogen-rich gas to 2ppm through the reaction the following

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 deep removal of CO, and preparation method thereof
  • Catalyst for deep removal of CO, and preparation method thereof
  • Catalyst for deep removal of CO, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) 25.8 g of a five-nitrate zirconium is dissolved in 120 ml of deionized water, placed in a reactor with a polytetrafluoroethylene liner, adding 7.2 g of urea, reacting at 120 ° C for 4 h, resulting in a hydrothermal reaction product Zr (OH) 4 Colloid, filtered the reaction product, dried at 110 ° C overnight, 450 ° C in the muffle, 2 h under air atmosphere, to obtain Zro 2 powder.

[0039] (2) 11.6 g of nickel nickel nickel is made into solution, and the 5G Zro obtained by adding steps (1) 2 Powder, transferred to a three flask, stir, 7.2 g of urea, water bath heating to 90 ° C, maintained for 6 h, so that the urea is hydrolyzed, after washing, placed in an oven, and finally in Maver 450 ° C in the furnace, calcined under the air atmosphere, and the catalyst obtained by obtaining the depth removal CO was prepared.

[0040] The catalyst for the depth removal of CO produced in this embodiment is Zro 2 The carrier load NIO catalyst, the data obtained by testing the catalyst...

Embodiment 2

[0045] (1) 25.8 g of a five-nitrate zirconium is dissolved in 120 ml deionized water, placed in a reactor with a polytetrafluoroethylene liner, adding 21.6 g of urea, reacted at 120 ° C for 4 hours to obtain a hydrothermal reaction product. After the reaction product was filtered, after 110 ° C drying overnight, 550 ° C in the muffle, calcined under the air atmosphere for 4 h, resulting in Zro 2 powder.

[0046] (2) 5.82 g of nickel nickel nickel in 80 ml of nickel is formulated into a solution, and the 23.4 Gzro obtained by adding step (1). 2 Powder, transferred to three flasks, stir, add 3.0 g of urea, water bath heating to 75 ° C, maintaining the urea to hydrolyzate, the hydrothermal reaction product is filtered through the oven, and finally in Mao 450 ° C in the furnace, calcined under the air atmosphere, and the catalyst obtained from the depth removal CO was prepared.

[0047] The catalyst for the depth removal of CO produced in this embodiment is Zro 2 Carrier load NIO cata...

Embodiment 3

[0050] (1) 25.8 g of zirconium nitrate is dissolved in 120 ml of deionized water, add 10g Al 2 O 3 , Transferred to a three flask, stir, then add 12.6 g of urea, heating to 90 ° C, maintains 4 to 8 h, so that the urea is sufficiently hydrolyzed, and the obtained hydrothermal reaction product is filtered, 110 ° C drying overnight, after the horse 450 ° C in the furnace, calcined under the air atmosphere, get ZRO 2 -Al 2 O 3 powder.

[0051] (2) 5.82 g of nickel nickel nickel nickel into solution, add 7.39 g of step (1) to produce ZRO 2 -Al 2 O 3 Powder, transferred to a three flask, stir, add 3.6 g of urea, water bath to 90 ° C, maintained for 4 to 8 h, so that the urea is sufficiently hydrolyzed, after filtration of the hydrothermal reaction, placed in an oven drying overnight, finally A catalyst of the depth removal CO was prepared in a muffle furnace.

[0052] The catalyst for the depth removal of CO produced in this embodiment is Zro 2 -Al 2 O 3 Carrier load NIO catalyst, HO in...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a catalyst for deep removal of CO. The preparation method comprises the following steps: (1) taking zirconium nitrate pentahydrate or a mixture of zirconium nitrate pentahydrate and metal oxide as a raw material, then adding urea for hydrothermal reaction, and washing, drying and calcining the obtained reaction product to obtain a ZrO2-based carrier; and (2) performing a hydrothermal reaction on nickel nitrate hexahydrate, the ZrO2-based carrier prepared in the step (1) and urea which serve as raw materials, and washing, drying and calcining an obtained reaction product to obtain the catalyst for deep removal of CO. According to the prepared catalyst, NiO is loaded on the ZrO2-based carrier, and the catalyst is small in particle size, has excellent adsorption performance on hydrogen and CO, can reduce the concentration of CO in hydrogen-rich gas to 0.05 ppm or below, can be used for deep purification of raw material gas of a proton membrane exchange battery, meets the national standard requirement and is wide in application prospect.

Description

Technical field [0001] The present invention relates to the field of catalyst preparation, and more particularly to a catalyst of depth removal CO and a preparation method thereof. Background technique [0002] The proton film hydrogen fuel cell (PEMFC) has a higher energy conversion efficiency than the cartoon, which can be applied to the field of hydrogen fuel cell vehicles, mobile devices, home appliances. It is usually used as a battery electrode in platinum, but the impurity gas CO or the like contained in hydrogen can cause the platinum electrode to poison, greatly affect the activity and life of the platinum electrode. According to the National Standard GBT37244-2018 "Fuel-Hydrogen" in Proton Exchange Membrane Fuel Battery, Fuel Hydrogen, the CO concentration is less than 2 ppm or less, the lower the CO concentration, the more Long, greatly reduce the cost of proton hydrogen fuel cells. Therefore, it is of great significance to study CO depth removal. [0003] The removal ...

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): B01J23/755B01J37/10B01J35/10C01B3/58
CPCB01J23/755B01J23/002B01J37/10B01J35/023B01J35/1014C01B3/586C01B2203/0445
Inventor 吴素芳郑思名
Owner ZHEJIANG UNIV
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