CN106083173A - A kind of lamellar ceramic honey comb of high porosity and preparation method thereof - Google Patents

A kind of lamellar ceramic honey comb of high porosity and preparation method thereof Download PDF

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CN106083173A
CN106083173A CN201610467339.1A CN201610467339A CN106083173A CN 106083173 A CN106083173 A CN 106083173A CN 201610467339 A CN201610467339 A CN 201610467339A CN 106083173 A CN106083173 A CN 106083173A
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mol
powder
honey comb
preparation
ceramic honey
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方逐昌
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ANQING BUD TEXTILE MATERIALS Co Ltd
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ANQING BUD TEXTILE MATERIALS Co Ltd
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    • C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
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Abstract

Lamellar ceramic honey comb that the invention discloses a kind of high porosity and preparation method thereof and preparation method thereof, it is characterised in that be made up of the raw material of following weight portion: wood powder 58, cordierite 40 50, rubber powder 35, clay 13, ZrO2Powder 5 10, CrO2Powder 5 10, Pulvis Talci 10 15, magnesium carbonate 35, magnesium oxide 35, 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.Utilize ZrO2Powder and CrO2Powder strengthens the combination property of honeycomb ceramic carrier, makes honeycomb ceramic carrier have the advantages such as comprcssive strength is high, high temperature resistant, chemical stability is good, resistance to corrosion is strong；The La Sr Co O catalyst of load improves the purification efficiency to vehicle exhaust；Meanwhile, honeycomb ceramic carrier is made sheet type, facilitate installation and change, the most cost-effective, promote making full use of of resource, meet the trend of environmental protection instantly.

Description

A kind of lamellar ceramic honey comb of high porosity and preparation method thereof
Technical field
The present invention relates to ceramic material, lamellar ceramic honey comb particularly relating to a kind of high porosity 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 of a high porosity, it is characterised in that be made up of the raw material of following weight portion:
Wood powder 5-8, cordierite 40-50, rubber powder 3-5, clay 1-3, ZrO2Powder 5-10, CrO2Powder 5-10, Pulvis Talci 10-15, Magnesium carbonate 3-5, magnesium oxide 3-5, sodium carbonate 4-8, stearic acid 1-3,1 mol/L HNO3Solution is appropriate, nano 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. lamellar ceramic honey comb of a kind of high porosity described in and preparation method thereof, it is characterised in that include following step Rapid:
A. the preparation of lamellar ceramic honey comb:
Take wood powder, cordierite, rubber powder, clay, ZrO2Powder, CrO2Powder, Pulvis Talci, magnesium carbonate, magnesium oxide and sodium carbonate carry out ball Mill, batch mixing, be crushed to 200-500 mesh after, add stearic acid, 50-60 part deionized water mix homogeneously, old 20-25 h obtains To pug；Pug is put into after vacuum pugmill carries out mud refining, place into and single lead screw ex truding briquetting machine is cut into after molding 3-5cm Plate tensile sample；Putting in calcining furnace after drying sample at 100-150 DEG C, be incubated 1-4h at 1200-1500 DEG C, 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；Wood powder can vapor away after high-temperature firing, forms space, improves the hole of ceramic monolith Rate, thus improve catalytic efficiency.
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 of a kind of high porosity, it is characterised in that be made up of the raw material of following weight portion:
Wood powder 6, cordierite 40, clay 3, ZrO2Powder 10, rubber powder 5, CrO2Powder 5, Pulvis Talci 10, magnesium carbonate 3, magnesium oxide 3, carbon Acid sodium 8, stearic acid 3,1 mol/L HNO3Solution is appropriate, nano alumina sol 50,1 mol/L La (NO3)33,1 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 lamellar ceramic honey comb of a kind of high porosity and preparation method thereof, it is characterised in that comprise the following steps:
A. the preparation of lamellar ceramic honey comb:
Take wood powder, cordierite, rubber powder, clay, ZrO2Powder, CrO2Powder, Pulvis Talci, magnesium carbonate, magnesium oxide and sodium carbonate carry out ball Mill, batch mixing, be crushed to 200-500 mesh after, add stearic acid, 50-60 part deionized water mix homogeneously, old 20-25 h obtains To pug；Pug is put into after vacuum pugmill carries out mud refining, place into and single lead screw ex truding briquetting machine is cut into after molding 3-5cm Plate tensile sample；Putting in calcining furnace after drying sample at 100-150 DEG C, be incubated 1-4h at 1200-1500 DEG C, 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.
La-Sr-Co-O precursor solution described in 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.
After testing:
To CO catalytic efficiency >=90%.

Claims (3)

1. the lamellar ceramic honey comb of a high porosity, it is characterised in that be made up of the raw material of following weight portion:
Wood powder 5-8, cordierite 40-50, rubber powder 3-5, clay 1-3, ZrO2Powder 5-10, CrO2Powder 5-10, Pulvis Talci 10-15, Magnesium carbonate 3-5, magnesium oxide 3-5, sodium carbonate 4-8, stearic acid 1-3,1 mol/L HNO3Solution is appropriate, nano 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%.
Lamellar ceramic honey comb of a kind of high porosity 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 wood powder, cordierite, rubber powder, clay, ZrO2Powder, CrO2Powder, Pulvis Talci, magnesium carbonate, magnesium oxide and sodium carbonate carry out ball Mill, batch mixing, be crushed to 200-500 mesh after, add stearic acid, 50-60 part deionized water mix homogeneously, old 20-25 h obtains To pug；Pug is put into after vacuum pugmill carries out mud refining, place into and single lead screw ex truding briquetting machine is cut into after molding 3-5cm Plate tensile sample；Putting in calcining furnace after drying sample at 100-150 DEG C, be incubated 1-4h at 1200-1500 DEG C, 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.
CN201610467339.1A 2016-06-24 2016-06-24 A kind of lamellar ceramic honey comb of high porosity and preparation method thereof Pending CN106083173A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508747A (en) * 2012-06-18 2014-01-15 苏州忠辉蜂窝陶瓷有限公司 High-purification-rate high-strength honeycomb ceramic and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508747A (en) * 2012-06-18 2014-01-15 苏州忠辉蜂窝陶瓷有限公司 High-purification-rate high-strength honeycomb ceramic and preparation method thereof

Non-Patent Citations (1)

* 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》 *

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