CN106116556A - Lamellar ceramic honey comb that a kind of plasticity is good and preparation method thereof - Google Patents

Lamellar ceramic honey comb that a kind of plasticity is good and preparation method thereof Download PDF

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CN106116556A
CN106116556A CN201610507866.0A CN201610507866A CN106116556A CN 106116556 A CN106116556 A CN 106116556A CN 201610507866 A CN201610507866 A CN 201610507866A CN 106116556 A CN106116556 A CN 106116556A
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mol
honey comb
powder
ceramic honey
plasticity
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闫秦峻
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BENGBU NANZI INSTRUMENT Co Ltd
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BENGBU NANZI INSTRUMENT Co Ltd
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    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/50Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
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Abstract

The invention discloses good lamellar ceramic honey comb of a kind of plasticity and preparation method thereof, be made up of following raw material: osseocolla 5 10, cordierite 40 50, clay 13, ZrO2Powder 5 10, gelatin 24, CrO2Powder 5 10, Pulvis Talci 10 15, magnesium carbonate 35, hydroxypropyl methyl fiber 25, sodium carbonate 48, stearic acid 13,1 mol/L HNO3Solution is appropriate, nano alumina sol 50 60,1 mol/L La (NO3)313,1 mol/L Sr (NO3)212,1 mol/L Co (NO3)20.5 1,1 mol/L citric acid 26, deionized water 100 200;Honeycomb ceramic carrier is made sheet type by the present invention, facilitates installation and changes.

Description

Lamellar ceramic honey comb that a kind of plasticity is good and preparation method thereof
Technical field
The present invention relates to ceramic material, particularly relate to good lamellar ceramic honey comb of a kind of plasticity and preparation method thereof.
Technical background
Automobile pollution has become the important sources of China's air pollution, is the weight causing gray haze and photochemical pollution Want reason.Vehicle exhaust is mainly nitrogen oxides (NOx), Hydrocarbon (HC), carbon monoxide (C0), particulate matter etc., become For main atmosphere pollution, therefore, the most important thing solving air pollution problems inherent is i.e. to solve automobile exhaust pollution problem.
Automobile exhaust purifier is mainly made up of housing, carrier and catalyst 3 part, and wherein the selection of catalyst is the heaviest Want.Three-way catalyst refers to remove NO simultaneouslyx, the catalyst of HC, CO these three major pollutants, lot of experiments research table Bright, rare earth perovskite catalyst La-Sr-Co-O is three-way catalyst, and the good catalytic activity to vehicle exhaust.Zhu Jie exists Its master thesis " the cordierite honeycomb ceramic load La-Sr-Co-O research to automotive exhaust catalysis performance " uses violet Cordierite ceramic honey comb is as carrier, and La-Sr-Co-O perovskite composite oxide, as catalyst active component, is prepared for whole Body formula auto-exhaust catalyst, but its ceramic monolith heat resistance prepared is the highest, and integral catalyzer is once Damage needs integral replacing, also add use cost while waste resource.
Summary of the invention
For above not enough, it is an object of the invention to provide a kind of high temperature resistant, length in service life, can guarantee that resource is reasonable again Lamellar ceramic honey comb utilized and preparation method thereof.
The technical problem to be solved uses following technical scheme to realize:
1. the lamellar ceramic honey comb that a plasticity is good, it is characterised in that be made up of the raw material of following weight portion:
Osseocolla 5-10, cordierite 40-50, clay 1-3, ZrO2Powder 5-10, gelatin 2-4, CrO2Powder 5-10, Pulvis Talci 10-15, Magnesium carbonate 3-5, hydroxypropyl methyl fiber 2-5, sodium carbonate 4-8, stearic acid 1-3,1 mol/L HNO3Solution is appropriate, nano oxygen Change Alumina gel 50-60,1 mol/L La (NO3)31-3,1 mol/L Sr (NO3)21-2,1 mol/L Co (NO3)2 0.5-1、 1 mol/L citric acid 2-6, deionized water 100-200;
The solid content of described nano alumina sol is 20%-25%.
2. lamellar ceramic honey comb that a kind of plasticity described in is good and preparation method thereof, it is characterised in that include following Step:
A. the preparation of lamellar ceramic honey comb:
Take osseocolla, cordierite, clay, ZrO2Powder, gelatin, CrO2Powder, Pulvis Talci, hydroxypropyl methyl fiber, magnesium carbonate and carbonic acid Sodium carries out ball milling, batch mixing, be crushed to 200-500 mesh after, add stearic acid, 50-60 part deionized water mix homogeneously, old 20-25 h obtains pug;Pug is put into after vacuum pugmill carries out mud refining, place into molding rear cutout in single lead screw ex truding briquetting machine It is segmented into the plate tensile sample of 3-5cm;Put in calcining furnace after drying sample at 100-150 DEG C, at 1200-1500 DEG C, be incubated 1-4h, Cooling is come out of the stove.
B. the pretreatment of lamellar ceramic honey comb:
After the cordierite honeycomb ceramic plate tensile sample that water-washing step a obtains, use HNO3Solution soaking 20-30 h, uses clear water afterwards It is dried after ultrasonic 10-30 min;
C. nano alumina sol and the coating of La-Sr-Co-O catalyst:
Step b gained plate tensile sample is immersed in the mixed liquor of nano alumina sol and La-Sr-Co-O precursor solution, 20- Take out after 60min, blow down the mixed liquor of plate tensile sample duct residual with ear washing bulb, at 50-100 DEG C, be dried 10-15h, 500- Roasting 3-8h at 1000 DEG C, repeats 3-5 time.
3. the La-Sr-Co-O precursor solution described in is by 1 described mol/L La (NO3)3, 1 mol/L Sr (NO3)2, 1 mol/L Co (NO3)2, 1 mol/L citric acid solution mixes.
The invention has the beneficial effects as follows: the present invention utilizes high temperature resistant, wear-resistant and corrosion resistant inert inorganic material ZrO2 Powder and CrO2Powder strengthens the combination property of honeycomb ceramic carrier, make honeycomb ceramic carrier have comprcssive strength high, high temperature resistant, change The advantages such as good stability, resistance to corrosion are strong;Further, utilize water soluble carbonate sodium to improve the hole of ceramic monolith Rate;After nano alumina sol and La-Sr-Co-O precursor solution are mixed, ceramic monolith is soaked, add La- Sr-Co-O catalyst and the adhesion of carrier, extend its service life;Honeycomb ceramic carrier is made sheet type, facilitates peace Dress and replacing, the most cost-effective, promote making full use of of resource, meet the trend of environmental protection instantly, have broader Application prospect and market value;Coordinate and with the addition of osseocolla, make the honeycomb ceramic mud blank of generation have good plasticity, can drop The production cost of low extruded production ceramic honey comb.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below knot Close specific embodiment, the present invention is expanded on further.
Embodiment
The lamellar ceramic honey comb that a kind of plasticity is good, it is characterised in that be made up of the raw material of following weight portion:
Osseocolla 10, cordierite 40, clay 3, ZrO2Powder 5, gelatin 2, CrO2Powder 5, Pulvis Talci 10, magnesium carbonate 3, hydroxypropyl methyl Fiber 2, sodium carbonate 4, stearic acid 3,1 mol/L HNO3Solution is appropriate, nano alumina sol 50,1 mol/L La (NO3)3 3,1 mol/L Sr (NO3)22,1 mol/L Co (NO3)21,1 mol/L citric acid 6, deionized water 200;
The solid content of described nano alumina sol is 20%-25%.
Lamellar ceramic honey comb that described a kind of plasticity is good and preparation method thereof, it is characterised in that include following step Rapid:
A. the preparation of lamellar ceramic honey comb:
Take osseocolla, cordierite, clay, ZrO2Powder, gelatin, CrO2Powder, Pulvis Talci, hydroxypropyl methyl fiber, magnesium carbonate and carbonic acid Sodium carries out ball milling, batch mixing, be crushed to 200-500 mesh after, add stearic acid, 50-60 part deionized water mix homogeneously, old 20-25 h obtains pug;Pug is put into after vacuum pugmill carries out mud refining, place into molding rear cutout in single lead screw ex truding briquetting machine It is segmented into the plate tensile sample of 3-5cm;Put in calcining furnace after drying sample at 100-150 DEG C, at 1200-1500 DEG C, be incubated 1-4h, Cooling is come out of the stove.
B. the pretreatment of lamellar ceramic honey comb:
After the cordierite honeycomb ceramic plate tensile sample that water-washing step a obtains, use HNO3Solution soaking 20-30 h, uses clear water afterwards It is dried after ultrasonic 10-30 min;
C. nano alumina sol and the coating of La-Sr-Co-O catalyst:
Step b gained plate tensile sample is immersed in the mixed liquor of nano alumina sol and La-Sr-Co-O precursor solution, 20- Take out after 60min, blow down the mixed liquor of plate tensile sample duct residual with ear washing bulb, at 50-100 DEG C, be dried 10-15h, 500- Roasting 3-8h at 1000 DEG C, repeats 3-5 time.
Described La-Sr-Co-O precursor solution is by 1 described mol/L La (NO3)3, 1 mol/L Sr (NO3)2, 1 mol/L Co(NO3)2, 1 mol/L citric acid solution mixes.
After testing:
To CO catalytic efficiency >=90%.

Claims (3)

1. the lamellar ceramic honey comb that a plasticity is good, it is characterised in that be made up of the raw material of following weight portion:
Osseocolla 5-10, cordierite 40-50, clay 1-3, ZrO2Powder 5-10, gelatin 2-4, CrO2Powder 5-10, Pulvis Talci 10-15, Magnesium carbonate 3-5, hydroxypropyl methyl fiber 2-5, sodium carbonate 4-8, stearic acid 1-3,1 mol/L HNO3Solution is appropriate, nano oxygen Change Alumina gel 50-60,1 mol/L La (NO3)31-3,1 mol/L Sr (NO3)21-2,1 mol/L Co (NO3)2 0.5-1、 1 mol/L citric acid 2-6, deionized water 100-200;
The solid content of described nano alumina sol is 20%-25%.
Lamellar ceramic honey comb that a kind of plasticity the most according to claim 1 is good and preparation method thereof, it is characterised in that Comprise the following steps:
A. the preparation of lamellar ceramic honey comb:
Take osseocolla, cordierite, clay, ZrO2Powder, gelatin, CrO2Powder, Pulvis Talci, hydroxypropyl methyl fiber, magnesium carbonate and carbonic acid Sodium carries out ball milling, batch mixing, be crushed to 200-500 mesh after, add stearic acid, 50-60 part deionized water mix homogeneously, old 20-25 h obtains pug;Pug is put into after vacuum pugmill carries out mud refining, place into molding rear cutout in single lead screw ex truding briquetting machine It is segmented into the plate tensile sample of 3-5cm;Put in calcining furnace after drying sample at 100-150 DEG C, at 1200-1500 DEG C, be incubated 1-4h, Cooling is come out of the stove;
B. the pretreatment of lamellar ceramic honey comb:
After the cordierite honeycomb ceramic plate tensile sample that water-washing step a obtains, use HNO3Solution soaking 20-30 h, surpasses with clear water afterwards It is dried after sound 10-30 min;
C. nano alumina sol and the coating of La-Sr-Co-O catalyst:
Step b gained plate tensile sample is immersed in the mixed liquor of nano alumina sol and La-Sr-Co-O precursor solution, 20- Take out after 60min, blow down the mixed liquor of plate tensile sample duct residual with ear washing bulb, at 50-100 DEG C, be dried 10-15h, 500- Roasting 3-8h at 1000 DEG C, repeats 3-5 time.
La-Sr-Co-O precursor solution the most according to claim 2 is by 1 described mol/L La (NO3)3, 1 mol/L Sr(NO3)2, 1 mol/L Co (NO3)2, 1 mol/L citric acid solution mixes.
CN201610507866.0A 2016-07-01 2016-07-01 Lamellar ceramic honey comb that a kind of plasticity is good and preparation method thereof Pending CN106116556A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508748A (en) * 2012-06-18 2014-01-15 苏州忠辉蜂窝陶瓷有限公司 Cordierite honeycomb ceramic and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508748A (en) * 2012-06-18 2014-01-15 苏州忠辉蜂窝陶瓷有限公司 Cordierite honeycomb ceramic and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
祝杰: "堇青石蜂窝陶瓷负载La-Sr-Co-O对汽车尾气催化性能的研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 *
罗旭东等: "Zr4+对固相反应制备堇青石材料晶相转变的影响", 《无机化学学报》 *
罗旭东等: "氧化铬对菱镁矿风化石制备堇青石材料的影响", 《硅酸盐通报》 *

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