Molecular sieve coating load manganese based composite oxide integrated catalyst and preparation method thereof

A technology of composite oxides and monolithic catalysts, applied in molecular sieve catalysts, physical/chemical process catalysts, separation methods, etc., can solve the problems of scarce precious metal resources, high prices, and high manufacturing costs, and achieve low manufacturing costs, high-temperature activity, and Not easy to fall off effect

Inactive Publication Date: 2012-04-11
ZHEJIANG NORMAL UNIVERSITY +1
5 Cites 17 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a molecular sieve coating-loaded manganese-based composite...
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

Abstract

The invention provides a molecular sieve coating load manganese based composite oxide integrated catalyst with easy material acquisition, low preparation cost and firm combination of active constituents and carrier of catalyst, and a preparation method thereof for the defects that the noble metal catalyst has few noble metal resources, high price and high preparation cost. The catalyst provided by the invention is a cellular catalytic combustion catalyst, which comprises a molecular sieve coating, a manganese based composite oxide and a cellular carrier. The catalyst provided by the invention is prepared by the following steps of: uniformly mixing a precursor with the manganese based composite oxide, the molecular sieve and the water to obtain a grout with manganese based composite oxide precursor; soaking the cellular carrier into the grout with manganese based composite oxide precursor; and drying and baking to obtain the molecular sieve coating load manganese based composite oxide integrated catalyst.

Application Domain

Molecular sieve catalystsDispersed particle separation

Technology Topic

Composite oxideMolecular sieve +8

Image

  • Molecular sieve coating load manganese based composite oxide integrated catalyst and preparation method thereof
  • Molecular sieve coating load manganese based composite oxide integrated catalyst and preparation method thereof
  • Molecular sieve coating load manganese based composite oxide integrated catalyst and preparation method thereof

Examples

  • Experimental program(11)
  • Comparison scheme(2)

Example Embodiment

[0018] Example 1
[0019] Weigh 15.79g of 50% Mn(NO 3 ) 2 solution, 2.30g Cu(NO 3 ) 2 ·3H 2 O. 2.89g Silicalite-1 molecular sieve, add 6.86g water, stir to form a slurry, and then apply the slurry to a size of 50mm×25mm×40mm, with an opening rate of 195cell/in 2 , On the cordierite honeycomb ceramics with a mass of 30.2g, blow out the residual liquid in the honeycomb channel. At this time, there is still a part of the slurry remaining. Air the cordierite honeycomb ceramics at room temperature until the surface is dry, and then dry at 120°C for 1 hour, and then in the muffle Baking in a furnace at 500°C for 1 hour. Repeat the above impregnation, drying, and calcination twice, the last calcination temperature is 500°C, and calcination is performed for 4 hours to obtain the monolithic catalyst of the present invention.
[0020] The prepared monolithic catalyst is made into a cylindrical shape, packed in a fixed-bed catalytic combustion reactor, and the catalytic combustion of toluene or ethyl acetate is used as a probe reaction to evaluate the catalytic combustion performance of organic waste gas purification. The specifications of the honeycomb ceramic catalyst It is 20mm in diameter and 40mm in length, carrying toluene or ethyl acetate through the air to flow through the reactor, and the content of toluene or ethyl acetate in the air is 4.2-4.5g m -3 , Airspeed 10000h -1. The catalytic combustion efficiencies are shown in Table 1 and Table 2, respectively. The evaluation of catalytic combustion performance for purifying organic waste gas of the catalysts prepared in the following examples is carried out according to the reaction conditions unless otherwise specified.

Example Embodiment

[0021] Example 2
[0022] Weigh 15.82g of 50% Mn(NO 3 ) 2 solution, 2.29g Cu(NO 3 ) 2 ·3H 2 O, 2.91g H-ZSM-5, 11.16g citric acid, 1.18g polyethylene glycol, add 9.92g water, stir to form a slurry, and then apply the slurry to a size of 50mm×25mm×40mm, with a porosity of 195cell/in 2 , On the cordierite honeycomb ceramics with a mass of 30.2g, blow out the residual liquid in the honeycomb channel. At this time, there is still a part of the slurry remaining. Air the cordierite honeycomb ceramics at room temperature until the surface is dry, and then dry at 120°C for 1 hour, and then in the muffle Baking in a furnace at 500°C for 1 hour. Repeat the above impregnation, drying, and calcination twice, the last calcination temperature is 500°C, and calcination is performed for 4 hours to obtain the monolithic catalyst of the present invention.
[0023] The catalytic combustion effects of the prepared monolithic catalyst on toluene and ethyl acetate are shown in Table 1 and Table 2, respectively.

Example Embodiment

[0024] Example 3
[0025] Weigh 15.76g of 50% Mn(NO 3 ) 2 solution, 2.26g Cu(NO 3 ) 2 ·3H 2 O, 2.93g TS-1, 11.62g citric acid, 1.19g polyethylene glycol, add 9.90g water, stir to form a slurry, and then apply the slurry to a size of 50mm×25mm×40mm, with an opening ratio of 195cell/ in 2 , On the cordierite honeycomb ceramics with a mass of 30.5g, blow out the residual liquid in the honeycomb channel. At this time, there is still a part of the slurry remaining. Air the cordierite honeycomb ceramics at room temperature until the surface is dry, and then dry at 120°C for 1 hour, and then in the muffle Baking in a furnace at 500°C for 1 hour. Repeat the above impregnation, drying, and calcination twice, the last calcination temperature is 800°C, and calcination is performed for 4 hours to obtain the monolithic catalyst of the present invention.
[0026] The catalytic combustion effects of the prepared monolithic catalyst on toluene and ethyl acetate are shown in Table 1 and Table 2, respectively.
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
F195.0
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
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

Similar technology patents

Moisture-cured epoxy asphalt anticorrosive paint and preparation method thereof

ActiveCN104073127AStrong adhesionStrong combinationAnti-corrosive paintsEpoxy resin coatingsSolventCoal Tar Pitches
Owner:天津市津海特种涂料装饰有限公司

Hydrophilic modification method of ultrafiltration membrane

InactiveCN101966433AStrong combinationNot easy to loseSemi-permeable membranesUF - UltrafiltrationSeparation process
Owner:大连先路科技发展有限公司

Workpiece with diamond/graphene composite lubricating film and preparation method thereof

PendingCN109722642AStrong combinationNot easy to fall offVacuum evaporation coatingSputtering coatingCvd grapheneDiamond thin film
Owner:SHENZHEN INST OF ADVANCED TECH

Ceramic and preparation method thereof as well as ceramic composite material and preparation method thereof

ActiveCN103011776AImprove light absorptionStrong combinationChemical platingCeramic composite
Owner:BYD CO LTD

A preparation method of high-performance sintered Nd-Fe-B permanent magnet material

InactiveCN109192493AStrong combinationFacilitate grain boundary diffusion processInductances/transformers/magnets manufactureMagnetic materialsAlloy elementRare-earth element
Owner:UNIV OF SCI & TECH BEIJING

Classification and recommendation of technical efficacy words

  • Strong combination
  • Not easy to fall off

Method for processing high-temperature alloy furnace tube

ActiveCN101565807AStrong combinationMitigation of catalytic cokingSolid state diffusion coatingProduct gasMetallurgy
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Preparation method of macroporous aluminum oxide with diplopore distribution

InactiveCN101214454AStrong combinationOvercoming low mechanical strengthCatalyst carriersCarbon blackPetroleum
Owner:SHANGHAI SECOND POLYTECHNIC UNIVERSITY

People also interested in

Improve thermal stabilityRaw materials are easy to getLow manufacturing costChemistryGroutNoble metalCooking & bakingCoatingManganese
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.

© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap