CN106116621A - A kind of toughened and strengthened lamellar ceramic honey comb and preparation method thereof - Google Patents

A kind of toughened and strengthened lamellar ceramic honey comb and preparation method thereof Download PDF

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CN106116621A
CN106116621A CN201610508038.9A CN201610508038A CN106116621A CN 106116621 A CN106116621 A CN 106116621A CN 201610508038 A CN201610508038 A CN 201610508038A CN 106116621 A CN106116621 A CN 106116621A
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mol
powder
honey comb
ceramic honey
toughened
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闫秦峻
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BENGBU NANZI INSTRUMENT Co Ltd
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Abstract

The invention discloses a kind of toughened and strengthened lamellar ceramic honey comb and preparation method thereof, be made up of following raw material: steel fibre 35, cordierite 40 50, clay 13, ZrO2Powder 5 10, carborundum brief fiber 35, CrO2Powder 5 10, Pulvis Talci 10 15, magnesium carbonate 35, polyvinyl alcohol 13, 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；The honeycomb ceramic carrier of the present invention has the advantages such as comprcssive strength is high, high temperature resistant, chemical stability is good, resistance to corrosion is strong.

Description

A kind of toughened and strengthened lamellar ceramic honey comb and preparation method thereof
Technical field
The present invention relates to ceramic material, particularly relate to a kind of toughened and strengthened lamellar ceramic honey comb 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. a toughened and strengthened lamellar ceramic honey comb, it is characterised in that be made up of the raw material of following weight portion:
Steel fibre 3-5, cordierite 40-50, clay 1-3, ZrO2Powder 5-10, carborundum brief fiber 3-5, CrO2Powder 5-10 is sliding Stone powder 10-15, magnesium carbonate 3-5, polyvinyl alcohol 1-3, sodium carbonate 4-8, stearic acid 1-3,1 mol/L HNO3Solution is appropriate, receives Rice alumina sol 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. a kind of toughened and strengthened lamellar ceramic honey comb described in and preparation method thereof, it is characterised in that include following step Rapid:
A. the preparation of lamellar ceramic honey comb:
Take steel fibre, cordierite, clay, ZrO2Powder, carborundum brief fiber, CrO2Powder, Pulvis Talci, magnesium carbonate and sodium carbonate enter Row ball milling, batch mixing, be crushed to 200-500 mesh after, add polyvinyl alcohol, 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 in single lead screw ex truding briquetting machine After be cut into the plate tensile sample of 3-5cm；Put in calcining furnace after drying sample at 100-150 DEG C, be incubated at 1200-1500 DEG C 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 the carborundum brief fiber added, serve toughened and strengthened effect.
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
A kind of toughened and strengthened lamellar ceramic honey comb, it is characterised in that be made up of the raw material of following weight portion:
Steel fibre 5, cordierite 50, clay 3, ZrO2Powder 5, carborundum brief fiber 5, CrO2Powder 10, Pulvis Talci 15, magnesium carbonate 5, poly- Vinyl alcohol 3, sodium carbonate 8, stearic acid 3,1 mol/L HNO3Solution is appropriate, nano alumina sol 60,1 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%.
Described a kind of toughened and strengthened lamellar ceramic honey comb and preparation method thereof, it is characterised in that comprise the following steps:
A. the preparation of lamellar ceramic honey comb:
Take steel fibre, cordierite, clay, ZrO2Powder, carborundum brief fiber, CrO2Powder, Pulvis Talci, magnesium carbonate and sodium carbonate enter Row ball milling, batch mixing, be crushed to 200-500 mesh after, add polyvinyl alcohol, 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 in single lead screw ex truding briquetting machine After be cut into the plate tensile sample of 3-5cm；Put in calcining furnace after drying sample at 100-150 DEG C, be incubated at 1200-1500 DEG C 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. a toughened and strengthened lamellar ceramic honey comb, it is characterised in that be made up of the raw material of following weight portion:
Steel fibre 3-5, cordierite 40-50, clay 1-3, ZrO2Powder 5-10, carborundum brief fiber 3-5, CrO2Powder 5-10, Talcum Powder 10-15, magnesium carbonate 3-5, polyvinyl alcohol 1-3, sodium carbonate 4-8, stearic acid 1-3,1 mol/L HNO3Solution is appropriate, nanometer Alumina sol 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%.
A kind of toughened and strengthened lamellar ceramic honey comb the most according to claim 1 and preparation method thereof, it is characterised in that bag Include following steps:
A. the preparation of lamellar ceramic honey comb:
Take steel fibre, cordierite, clay, ZrO2Powder, carborundum brief fiber, CrO2Powder, Pulvis Talci, magnesium carbonate and sodium carbonate are carried out Ball milling, batch mixing, be crushed to 200-500 mesh after, add polyvinyl alcohol, stearic acid, 50-60 part deionized water mix homogeneously, old Rotten 20-25 h obtains pug；Pug is put into after vacuum pugmill carries out mud refining, place in single lead screw ex truding briquetting machine after molding It is cut 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.
CN201610508038.9A 2016-07-01 2016-07-01 A kind of toughened and strengthened lamellar ceramic honey comb and preparation method thereof Pending CN106116621A (en)

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CN107213918A (en) * 2017-07-12 2017-09-29 中国矿业大学 A kind of preparation method of balloon borne body of zirconium and its application in manganese base desulfurizer

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107213918A (en) * 2017-07-12 2017-09-29 中国矿业大学 A kind of preparation method of balloon borne body of zirconium and its application in manganese base desulfurizer
CN107213918B (en) * 2017-07-12 2020-06-09 中国矿业大学 Preparation method of zirconium ball carrier and application of zirconium ball carrier in manganese-based desulfurizing agent

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