Check patentability & draft patents in minutes with Patsnap Eureka AI!

Supported nano multi-metal catalyst, preparation method thereof and application of supported nano multi-metal catalyst to CO oxidation

A multi-metal catalyst, supported technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of poor activity of single metal, multi-metal and perovskite It is difficult to combine the type composite oxide and the specific surface area of ​​the perovskite type composite oxide is small to achieve the effect of good stability and sintering resistance

Pending Publication Date: 2020-06-12
TIANJIN UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​perovskite-type composite oxides is small, and the activity of a single metal is poor, so it is difficult to combine multiple metals with perovskite-type composite oxides. Preparation method of composite oxides combined and supported on a carrier with a large specific surface area

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
  • Supported nano multi-metal catalyst, preparation method thereof and application of supported nano multi-metal catalyst to CO oxidation
  • Supported nano multi-metal catalyst, preparation method thereof and application of supported nano multi-metal catalyst to CO oxidation
  • Supported nano multi-metal catalyst, preparation method thereof and application of supported nano multi-metal catalyst to CO oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1), promptly according to molar ratio is lanthanum nitrate: cobalt nitrate: platinum nitrate: ruthenium nitrate: palladium nitrate: citric acid: ethylene glycol=1:0.97:0.01:0.01:0.01:2.4:0.48 ratio configuration solution;( 2), that is, according to the mass fraction of perovskite in the catalyst as 10%, the solution configured in step (1) is impregnated in SiO 2 After standing on the carrier for 24 hours, the sample was placed in a constant temperature drying oven at 80°C for 6 hours to obtain an intermediate product; (3), the intermediate product obtained in step (2) was heated to 120°C and dried for 12 hours to obtain a dried product (4), the product that is about to step (3) obtains roasting 2h and 5h respectively at 300 ℃ and 600 ℃, obtains catalyst precursor LaCo 0.97 Pt 0.01 Ru 0.01 PD 0.01 o 3 / SiO 2 . (5), the catalyst precursor that is about to step (4) obtains is placed in the reactor, passes into 12000ml / (g in the reactor cat h) using hydrogen to red...

Embodiment 2

[0035] (1), promptly according to molar ratio is lanthanum nitrate: cobalt nitrate: platinum nitrate: ruthenium nitrate: palladium nitrate: citric acid: ethylene glycol=1:0.85:0.05:0.05:0.05:2.4:0.48 ratio configuration solution;( 2), that is, according to the mass fraction of perovskite in the catalyst as 10%, the solution configured in step (1) is impregnated in SiO 2 After standing on the carrier for 24 hours, the sample was placed in a constant temperature drying oven at 80°C for 6 hours to obtain an intermediate product; (3), the intermediate product obtained in step (2) was heated to 120°C and dried for 12 hours to obtain a dried product (4), the product that is about to step (3) obtains roasting 2h and 5h respectively at 300 ℃ and 600 ℃, obtains catalyst precursor LaCo 0.85 Pt 0.05 Ru 0.05 PD 0.05 o 3 / SiO 2 . (5), the catalyst precursor that is about to step (4) obtains is placed in the reactor, passes into 12000ml / (g in the reactor cat h) using hydrogen to red...

Embodiment 3

[0040] (1), promptly according to molar ratio is lanthanum nitrate: cobalt nitrate: platinum nitrate: ruthenium nitrate: palladium nitrate: citric acid: ethylene glycol=1:0.7:0.1:0.1:0.1:2.4:0.48 ratio configuration solution;( 2), that is, according to the mass fraction of perovskite in the catalyst as 10%, the solution configured in step (1) is impregnated in SiO 2 After standing on the carrier for 24 hours, the sample was placed in a constant temperature drying oven at 80°C for 6 hours to obtain an intermediate product; (3), the intermediate product obtained in step (2) was heated to 120°C and dried for 12 hours to obtain a dried product (4), the product that is about to step (3) obtains roasting 2h and 5h respectively at 300 ℃ and 600 ℃, obtains catalyst precursor LaCo 0.7 Pt 0.1 Ru 0.1 PD 0.1 o 3 / SiO 2 . (5), the catalyst precursor that is about to step (4) obtains is placed in the reactor, passes into 12000ml / (g in the reactor cat h) with hydrogen to reduce the c...

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 relates to a supported nano multi-metal catalyst, a preparation method and application of the supported nano multi-metal catalyst to CO oxidation. The molecular formula of the catalyst precursor is LaCo < 1-x-y-z > Pt < x > Ru < y > Pd < z > O < 3 > / SiO2; the perovskite type composite oxide is supported on a carrier with a large specific surface area to be used as a catalyst precursor by utilizing the characteristic that the perovskite type composite oxide can be used for confining various metal ions and uniformly mixing the metal ions in perovskite crystal lattices; pt-Ru-Pd / LaCoO3 / SiO2 can be obtained after reduction, multiple metals interact with one another, and Pt-Ru-Pd / LaCoO3 / SiO2 and the perovskite type composite oxide are both active sites; the catalyst is used for acarbon monoxide oxidation reaction, carbon monoxide can be completely oxidized at a low temperature, and good stability and sintering resistance are shown in the reaction process.

Description

technical field [0001] The invention relates to a novel supported nano multi-metal catalyst with a perovskite type composite oxide as a precursor, its preparation and application of carbon monoxide oxidation, belonging to the application field of metal catalysts. In particular, it relates to supported nano-multimetal catalysts and preparation methods and their application to CO oxidation. Background technique [0002] CO is a common toxic and harmful gas in the atmosphere, which mainly comes from the incomplete combustion of fossil fuels. It is a colorless and odorless gas with a density close to that of air, easy to spread, with a boiling point of -191.5°C and a melting point of -205.02°C. After CO is inhaled by the human body, it is very easy to combine with hemoglobin in the blood, resulting in the inability of hemoglobin to combine with oxygen, hindering the transport of oxygen by hemoglobin, causing difficulty in breathing, hypoxia, and death, and irreversible damage t...

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
IPC IPC(8): B01J23/89B01J37/08B01J37/02B01J37/18B01D53/86B01D53/62
CPCB01J37/0018B01J37/18B01J37/0213B01J23/894B01D53/864B01J35/393B01J35/396Y02A50/20
Inventor 刘源张斯然安康
Owner TIANJIN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com