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

Sn-Mn-Ce-La catalyst as well as preparation method and application method thereof

A technology of tin manganese cerium lanthanum and its application method, which is applied in the field of tin manganese cerium lanthanum catalyst and its preparation and application method, can solve the problems of catalyst poisoning, easy deactivation, limitation of manganese catalysts, etc., and achieve elimination of temperature and low cost of raw materials , the effect of comprehensive performance improvement

Inactive Publication Date: 2015-01-07
WUHAN INSTITUTE OF TECHNOLOGY
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Manganese-based catalysts have attracted extensive attention due to their excellent performance in catalytic combustion of CVOCs, but because the chloride ions generated during the decomposition process of Cl-VOCs are easily adsorbed on Mn active sites, leading to catalyst poisoning, for example, there are reports in the literature, At 330°C, the MnCeLa catalyst is prone to deactivation during the catalytic combustion of chlorobenzene
Therefore, manganese-based catalysts have been greatly restricted in their industrialization.

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
  • Sn-Mn-Ce-La catalyst as well as preparation method and application method thereof
  • Sn-Mn-Ce-La catalyst as well as preparation method and application method thereof
  • Sn-Mn-Ce-La catalyst as well as preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation method of tin manganese cerium lanthanum catalyst comprises the following steps:

[0045] 1) Weigh the metered Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, citric acid and SnCl 2 2H 2 O, according to Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O and La(NO 3 ) 3 ·6H 2 The ratio of the amount of O species is 12.0:1:1, Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O and La(NO 3 ) 3 ·6H 2 The sum of the amount of O species and SnCl 2 2H 2 The ratio of the amount of O substance is 1:0.02, and the amount of citric acid is Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O and SnCl 2 2H 2 Weigh 0.25 times of the sum of the amounts of O substances;

[0046] The weighed Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, citric acid is dissolved in ultrapure water (ultrapure water quality is Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O and 10 times of the mass sum of citric acid) to obtain a mixed solution, w...

Embodiment 2

[0054] The preparation method of tin manganese cerium lanthanum catalyst comprises the following steps:

[0055] 1) Weigh the metered Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, citric acid and SnCl 2 2H 2 O, according to Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O and La(NO 3 ) 3 ·6H 2 The ratio of the amount of O species is 11.8:1:1, Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O and La(NO 3 ) 3 ·6H 2 The sum of the amount of O species and SnCl 2 2H 2 The ratio of the amount of O substance is 1:0.04, and the amount of citric acid is Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O and SnCl 2 2H 2 Weigh 0.3 times of the sum of the amounts of O substances;

[0056] The weighed Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, citric acid is dissolved in ultrapure water (ultrapure water quality is Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O and 10 times of the mass sum of citric acid) to obtain a mixed solution, wh...

Embodiment 3

[0064] The preparation method of tin manganese cerium lanthanum catalyst comprises the following steps:

[0065] 1) Weigh the metered Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, citric acid and SnCl 2 2H 2 O, according to Mn(NO 3 )2 , Ce(NO 3 ) 3 ·6H 2 O and La(NO 3 ) 3 ·6H 2 The ratio of the amount of O species is 11.3:1:1, Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O and La(NO 3 ) 3 ·6H 2 The sum of the amount of O species and SnCl 2 2H 2 The ratio of the amount of O substance is 1:0.08, and the amount of citric acid is Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O and SnCl 2 2H 2 Weigh 0.3 times of the sum of the amounts of O substances;

[0066] The weighed Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O, citric acid is dissolved in ultrapure water (ultrapure water quality is Mn(NO 3 ) 2 , Ce(NO 3 ) 3 ·6H 2 O, La(NO 3 ) 3 ·6H 2 O and 10 times of the mass sum of citric acid) to obtain a mixed solution, whic...

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
electrical resistivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a Sn-Mn-Ce-La catalyst. A preparation method of the catalyst comprises the following steps: 1) weighing and dissolving metered Mn(NO3)2, Ce(NO3)3*6H2O, La(NO3)3*6H2O and citric acid in water to obtain a mixed solution, and stirring the mixed solution at the constant temperature of 50-80 DEG C for 5-10 hours to obtain a yellow jelly-like substance; 2) drying the yellow jelly-like substance, adding an aqueous SnCl2*2H2O solution, stirring sufficiently, adding ammonia water dropwise and regulating PH to 9-10 to obtain a precipitate and a mother liquor; and 3) filtering, washing and drying the precipitate and roasting the precipitate in air to obtain the Sn-Mn-Ce-La composite oxide catalyst. The catalyst has higher low-temperature catalysis to eliminate the activity, chlorobenzene can be converted completely at the temperature of 190 DEG C-210 DEG C, and inactivation does not occur when continuous reaction is performed for 30 hours at the temperature of 250 DEG C-300 DEG C.

Description

technical field [0001] The invention relates to a tin-manganese-cerium-lanthanum catalyst and a preparation and application method thereof, belonging to the field of gas purification treatment. Background technique [0002] Chlorinated Volatile Organic Compounds (CVOCs) refer to chlorine-containing organic compounds that are volatile at room temperature and have a boiling point between 50°C and 260°C, and most CVOCs have good chemical and thermal stability. , difficult to decompose or biodegradable, long-term retention in nature and other characteristics, become a class of persistent organic pollutants that are difficult to deal with in environmental pollution control. [0003] Most of CVOCs contain a stable benzene ring structure, and the aromatic ring contains chlorine atoms replacing hydrogen. It is difficult to effectively eliminate low-concentration CVOCs by direct incineration and biodegradation methods commonly used in industry, and may also produce toxic intermediate...

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): B01J23/34B01D53/70B01D53/72B01D53/86
CPCY02A50/20
Inventor 刘善堂毛豆
Owner WUHAN INSTITUTE OF TECHNOLOGY
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