CN105498742B - A kind of potassium basis soot combustion catalyst and preparation method thereof - Google Patents
A kind of potassium basis soot combustion catalyst and preparation method thereof Download PDFInfo
- Publication number
- CN105498742B CN105498742B CN201510584483.9A CN201510584483A CN105498742B CN 105498742 B CN105498742 B CN 105498742B CN 201510584483 A CN201510584483 A CN 201510584483A CN 105498742 B CN105498742 B CN 105498742B
- Authority
- CN
- China
- Prior art keywords
- combustion catalyst
- soot combustion
- ethanol
- cook
- alcl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Catalysts (AREA)
Abstract
The present invention relates to a kind of potassium basis soot combustion catalyst and preparation method thereof, belong to environmental catalysis technical field.The catalytic inner core is KCl particles, and KCl particle outer layer covers Al2O3.First by CH3COOK、AlCl3, KOH is dissolved in ethanol is configured to ethanol solution respectively；By CH3COOK ethanol solutions add AlCl3Ethanol solution, after stirring, is added dropwise KOH ethanol solutions, is stood after stirring, slurries and solids are obtained after filtration washing after the completion of standing；By slurries temperature be 80~120 DEG C, pressure be to load 16~48h of high pressure reactor reaction under the conditions of 5~12Mpa to obtain mixed slurry, mixed slurry is obtained into solids and filtrate after filtration washing, solids prepares potassium basis soot combustion catalyst after standing overnight, drying, be calcined.The loss that the core shell structure potassium basis soot combustion catalyst that the present invention is prepared not only can effectively prevent sylvite in catalytic process, moreover it is possible to significantly improve the catalytic activity of catalyst.
Description
Technical field
The present invention relates to a kind of potassium basis soot combustion catalyst and preparation method thereof, belong to environmental catalysis technical field.
Background technology
Soot particulate is the important pollutant of a class of diesel emission.Carbon soot particles pollutant energy long-term suspension is in air
Middle formation aerosol, reduces visibility of air, not only influences sight, reduce visibility, while carbon smoke pollution thing can also be pierced
Swash lung, cause human body anoxia, slow poisoning, anaemia, nervous, nausea, headache, respiratory disease, pulmonary edema, skin disease occur
And the various disease conditions such as allergic disease, trigger bronchitis and pneumonia, resistance of the reduction people's respiratory system to infection；May be used also
Conjunctival congestion can be made, shed tears, ophthalmodynia, had sore throat, pant, coughing, even having difficulty in breathing.Importantly, these harmful substances
It is enough carcinogenic！As low latitude mobile pollution source, carbon smoke pollution thing exists in 1.2 meters away from ground or so floatings with the respiratory tract of people
Same horizontal line, people is easy to the particulate matter inspiration lung of emission by exhaust pipe, and adsorbed in carbon particle it is soluble organic
Thing（SOF）Containing many carcinogens such as BaP etc. in component, health is directly jeopardized.In addition, black smoke carry it is smelly
Taste gives directly offending detest sense.Therefore, the control of diesel emission carbon smoke pollution thing always is the policies of various countries
Management and the emphasis of technical research, the processing of carbon smoke pollution thing are increasingly paid close attention to by people.
Filtering and the mode that the mode that catalysis burning is combined is maximally effective processing soot at present.When being discharged due to soot,
First have to attachment on the filter, therefore soot catalysis oxidation be in fact exhaust gas from diesel vehicle filter regeneration issues.Filtering
The regeneration of device, is that operation is inconvenient the problem of maximum, or expense is too high.If catalyst attachment on the filter, by having
The burning-point of effect reduction soot, is allowed to burn under usual delivery temperature, can be achieved with being not required to dismounting i.e. continuous reproducible,
It is not only easy to maintenance, it is simple to operate, and while efficiency reduction energy consumption is improved, moreover it is possible to reduce secondary pollution.Thus develop
Go out the high activated catalyst of soot low-temperature burning, problem can be made perfectly to be solved, therefore the key of problem is that and looked for
To the catalyst of such a function admirable.
Catalyst for the processing of carbon smoke pollution thing includes noble metal catalyst and non-precious metal catalyst etc., and noble metal is urged
Agent is higher by activity and stability, but its expensive price limit its development, develops a kind of the non-of superior performance
Noble metal catalyst is current domestic and international researcher focus of attention.Numerous studies show that sylvite possesses good catalysis soot
Combustion activity, but sylvite is easily lost in catalytic process, is difficult to ensure that its stability being catalyzed.
The content of the invention
The problem of existing for above-mentioned prior art and deficiency, the present invention provide a kind of potassium basis soot combustion catalyst and its
Preparation method.The core shell structure potassium basis soot combustion catalyst that the present invention is prepared not only can effectively prevent sylvite from being catalyzed
Loss in journey, moreover it is possible to significantly improve the catalytic activity of catalyst, can improve pollutant while cost is significantly reduced
Treatment effeciency, the present invention is achieved through the following technical solutions.
A kind of potassium basis soot combustion catalyst, the catalytic inner core is KCl particles, and KCl particle outer layer covers
Al2O3。
A kind of preparation method of above-mentioned potassium basis soot combustion catalyst, it is comprised the following steps that：
（1）First by CH3COOK、AlCl3, KOH is dissolved in concentration is configured in ethanol for 0.01~0.03mol/L respectively
CH3COOK ethanol solutions, 0.5~1.5mol/LAlCl3Ethanol solution, 0.5~1.5mol/LKOH ethanol solutions；
（2）By step（1）Obtained CH3COOK ethanol solutions add step（1）AlCl3Ethanol solution, stirs
Afterwards, step is added dropwise（1）KOH ethanol solutions, stirring 2~5 hours after stand filtration washing after the completion of 10h, standing（Washing is used
Conventional alcohol washing）After obtain slurries and solids；
（3）By step（2）Obtained slurries temperature be 80~120 DEG C, pressure be to load high pressure under the conditions of 5~12Mpa
Reactor reacts 16~48h and obtains mixed slurry, and mixed slurry is obtained into solids and filtrate, solids warp after filtration washing
Stand overnight, dry（110 DEG C of dryings 24 hours）, prepare potassium basis soot combustion catalyst after roasting.
The step（2）The CH of middle addition3COOK ethanol solutions, AlCl3Ethanol solution, the amount of KOH ethanol solutions are holding
CH3COOK：AlCl3：KOH mol ratios are 3：1：3.
The step（3）In sintering temperature be 450~600 DEG C.
The step（3）In 900 DEG C of aging 2h after roasting.
The beneficial effects of the invention are as follows：
1st, superficial oxidation aluminium is fully wrapped around by sylvite, can effectively prevent sylvite in the loss of catalytic process.
2nd, sylvite and superficial oxidation aluminium form strong interaction, effectively increase catalysis and remember catalytic activity.
3rd, the catalyst uses raw material cheap and easy to get, greatly reduces the production cost of catalyst.
4th, the dependence of COMPARATIVE CATALYST's surface area is low, the material sintering especially caused in highly exothermic environment, and then causes
Remain to keep higher activity in the case of than surface reduction.
Brief description of the drawings
Fig. 1 is present invention process flow chart.
Embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
The potassium basis soot combustion catalyst, the catalytic inner core is KCl particles, and KCl particle outer layer covers Al2O3。
As shown in figure 1, the preparation method of the above-mentioned potassium basis soot combustion catalyst, it is comprised the following steps that：
（1）First by CH3COOK、AlCl3, KOH be dissolved in respectively be configured in ethanol concentration be 0.01mol/L CH3COOK
Ethanol solution, 0.5mol/LAlCl3Ethanol solution, 1.5mol/LKOH ethanol solutions；
（2）By step（1）Obtained 1LCH3COOK ethanol solutions add step（1）AlCl3Ethanol solution, stirs
Afterwards, step is added dropwise（1）KOH ethanol solutions, stirring 5 hours after stand filtration washing after the completion of 10h, standing（Washing is using normal
The alcohol washing of rule）After obtain slurries and solids；Wherein CH3COOK ethanol solutions, AlCl3Ethanol solution, KOH ethanol solutions add
Enter amount to keep CH3COOK：AlCl3：KOH mol ratios are 3：1：3.
（3）By step（2）Obtained slurries temperature be 120 DEG C, pressure be that to load autoclave under the conditions of 12Mpa anti-
Answer 16h to obtain mixed slurry, mixed slurry is obtained into solids and filtrate after filtration washing, solids is through standing overnight, doing
It is dry（110 DEG C of dryings 24 hours）, 600 DEG C of roastings prepare potassium basis soot combustion catalyst after 3 hours；Potassium basis soot is burnt
Catalyst is divided into two parts, and portion is in 900 DEG C of aging 2h.
Potassium basis soot combustion catalyst burn results before and after aging, Ti（Initiation temperature）And Tp（Summit temperature）Respectively
293 DEG C and 380 DEG C, the average selectivity of carbon dioxide is 97.8%.
Embodiment 2
The potassium basis soot combustion catalyst, the catalytic inner core is KCl particles, and KCl particle outer layer covers Al2O3。
As shown in figure 1, the preparation method of the above-mentioned potassium basis soot combustion catalyst, it is comprised the following steps that：
（1）First by CH3COOK、AlCl3, KOH be dissolved in respectively be configured in ethanol concentration be 0.03mol/L CH3COOK
Ethanol solution, 0.5mol/LAlCl3Ethanol solution, 0.5mol/LKOH ethanol solutions；
（2）By step（1）Obtained 1LCH3COOK ethanol solutions add step（1）AlCl3Ethanol solution, stirs
Afterwards, step is added dropwise（1）KOH ethanol solutions, stirring 5 hours after stand filtration washing after the completion of 10h, standing（Washing is using normal
The alcohol washing of rule）After obtain slurries and solids；Wherein CH3COOK ethanol solutions, AlCl3Ethanol solution, KOH ethanol solutions add
Enter amount to keep CH3COOK：AlCl3：KOH mol ratios are 3：1：3；
（3）By step（2）Obtained slurries temperature be 80 DEG C, pressure be to load high pressure reactor reaction under the conditions of 5Mpa
48h obtains mixed slurry, and mixed slurry is obtained into solids and filtrate after filtration washing, and solids is through standing overnight, drying
（110 DEG C of dryings 24 hours）, 600 DEG C of roastings prepare potassium basis soot combustion catalyst after 3 hours；The burning of potassium basis soot is urged
Agent is divided into two parts, and portion is in 900 DEG C of aging 2h.
Potassium basis soot combustion catalyst burn results before and after aging, Ti（Soot initiation temperature）And Tp（Soot converts summit
Temperature）Respectively 321 DEG C and 362 DEG C, the average selectivity of carbon dioxide is 98.5%.
Embodiment 3
The potassium basis soot combustion catalyst, the catalytic inner core is KCl nano particles, and KCl particle outer layer covers
Al2O3Nano particle.
As shown in figure 1, the preparation method of the above-mentioned potassium basis soot combustion catalyst, it is comprised the following steps that：
（1）First by CH3COOK、AlCl3, KOH be dissolved in respectively be configured in ethanol concentration be 0.02mol/L CH3COOK
Ethanol solution, 1.5mol/LAlCl3Ethanol solution, 1.0mol/LKOH ethanol solutions；
（2）By step（1）Obtained 1LCH3COOK ethanol solutions add step（1）AlCl3Ethanol solution, stirs
Afterwards, step is added dropwise（1）KOH ethanol solutions, stirring 2 hours after stand filtration washing after the completion of 10h, standing（Washing is using normal
The alcohol washing of rule）After obtain slurries and solids；Wherein CH3COOK ethanol solutions, AlCl3Ethanol solution, KOH ethanol solutions add
Enter amount to keep CH3COOK：AlCl3：KOH mol ratios are 3：1：3；
（3）By step（2）Obtained slurries temperature be 100 DEG C, pressure be that to load autoclave under the conditions of 7Mpa anti-
Answer 40h to obtain mixed slurry, mixed slurry is obtained into solids and filtrate after filtration washing, solids is through standing overnight, doing
It is dry（110 DEG C of dryings 24 hours）, 450 DEG C of roastings prepare potassium basis soot combustion catalyst after 3 hours；Potassium basis soot is burnt
Catalyst is divided into two parts, and portion is in 900 DEG C of aging 2h.
Potassium basis soot combustion catalyst burn results before and after aging, Ti（Soot initiation temperature）And Tp（Soot converts summit
Temperature）Respectively 318 DEG C and 384 DEG C, the average selectivity of carbon dioxide is 99.3%.
Embodiment 4
The potassium basis soot combustion catalyst, the catalytic inner core is KCl particles, and KCl particle outer layer covers Al2O3。
As shown in figure 1, the preparation method of the above-mentioned potassium basis soot combustion catalyst, it is comprised the following steps that：
（1）First by CH3COOK、AlCl3, KOH be dissolved in respectively be configured in ethanol concentration be 0.02mol/L CH3COOK
Ethanol solution, 1.0mol/LAlCl3Ethanol solution, 0.8mol/LKOH ethanol solutions；
（2）By step（1）Obtained 1LCH3COOK ethanol solutions add step（1）AlCl3Ethanol solution, stirs
Afterwards, step is added dropwise（1）KOH ethanol solutions, stirring 4 hours after stand filtration washing after the completion of 10h, standing（Washing is using normal
The alcohol washing of rule）After obtain slurries and solids；Wherein CH3COOK ethanol solutions, AlCl3Ethanol solution, KOH ethanol solutions add
Enter amount to keep CH3COOK：AlCl3：KOH mol ratios are 3：1：3；
（3）By step（2）Obtained slurries temperature be 100 DEG C, pressure be that to load autoclave under the conditions of 6Mpa anti-
Answer 40h to obtain mixed slurry, mixed slurry is obtained into solids and filtrate after filtration washing, solids is through standing overnight, doing
It is dry（110 DEG C of dryings 24 hours）, 500 DEG C of roastings prepare potassium basis soot combustion catalyst after 3 hours；Potassium basis soot is burnt
Catalyst is divided into two parts, and portion is in 900 DEG C of aging 2h.
Potassium basis soot combustion catalyst burn results before and after aging, Ti（Soot initiation temperature）And Tp（Soot converts summit
Temperature）Respectively 310 DEG C and 344 DEG C, the average selectivity of carbon dioxide is 99.6%.
Above in association with accompanying drawing to the present invention embodiment be explained in detail, but the present invention be not limited to it is above-mentioned
Embodiment, can also be before present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess
Put that various changes can be made.
Claims (4)
1. a kind of preparation method of potassium basis soot combustion catalyst, potassium basis soot combustion catalyst internal core is KCl particles,
KCl particle outer layer covers Al2O3, it is characterised in that comprise the following steps that：
（1）First by CH3COOK、AlCl3, KOH is dissolved in concentration is configured in ethanol for 0.01~0.03mol/L respectively
CH3COOK ethanol solutions, 0.5~1.5mol/LAlCl3Ethanol solution, 0.5~1.5 mol/LKOH ethanol solutions；
（2）By step（1）Obtained CH3COOK ethanol solutions add step（1）AlCl3Ethanol solution, after stirring, drop
Plus step（1）KOH ethanol solutions, stood after stirring, obtain slurries and solids after filtration washing after the completion of standing；
（3）By step（2）Obtained slurries temperature be 80~120 DEG C, pressure be to load reaction under high pressure under the conditions of 5~12Mpa
Kettle reacts 16~48h and obtains mixed slurry, mixed slurry is obtained into solids and filtrate after filtration washing, solids is through standing
Overnight, potassium basis soot combustion catalyst is prepared after dry, roasting.
2. the preparation method of potassium basis soot combustion catalyst according to claim 1, it is characterised in that：The step（2）
The CH of middle addition3COOK ethanol solutions, AlCl3Ethanol solution, the amount of KOH ethanol solutions are holding CH3COOK：AlCl3：KOH rubs
You are than being 3：1：3.
3. the preparation method of potassium basis soot combustion catalyst according to claim 1, it is characterised in that：The step（3）
In sintering temperature be 450~600 DEG C.
4. the preparation method of potassium basis soot combustion catalyst according to claim 1, it is characterised in that：The step（3）
In 900 DEG C of aging 2h after roasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510584483.9A CN105498742B (en) | 2015-09-15 | 2015-09-15 | A kind of potassium basis soot combustion catalyst and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510584483.9A CN105498742B (en) | 2015-09-15 | 2015-09-15 | A kind of potassium basis soot combustion catalyst and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105498742A CN105498742A (en) | 2016-04-20 |
| CN105498742B true CN105498742B (en) | 2017-10-27 |
Family
ID=55707276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510584483.9A Active CN105498742B (en) | 2015-09-15 | 2015-09-15 | A kind of potassium basis soot combustion catalyst and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105498742B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111450821A (en) * | 2020-04-24 | 2020-07-28 | 济南大学 | Preparation method of stable potassium-based carbon smoke combustion catalyst and obtained product |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2723149B2 (en) * | 1987-03-13 | 1998-03-09 | マツダ株式会社 | Core for pressure casting |
| CN102658122A (en) * | 2012-02-22 | 2012-09-12 | 华东理工大学 | Catalyst for combustion of soot particles in diesel vehicle exhaust, and preparation method thereof |
-
2015
- 2015-09-15 CN CN201510584483.9A patent/CN105498742B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105498742A (en) | 2016-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107983338B (en) | Method for improving catalytic performance of perovskite type composite metal oxide | |
| CN108067296B (en) | A kind of preparation method of honeycomb Mn based low-temperature denitration catalyst | |
| WO2015131632A1 (en) | Catalytic filter filtering material having tio2 thin-film protective layer and preparation method for same | |
| CN110354843A (en) | A kind of thin-walled honeycomb formula low temperature sulfur resistive SCR denitration and preparation method thereof | |
| CN103212245A (en) | Dedusting filter material containing MnO2 catalyst, and preparation method and application thereof | |
| CN105536528A (en) | Preparation method of denitration and dedusting difunctional ceramic filter | |
| CN104120508B (en) | A kind of metal oxide nanofibres with hierarchy and its preparation method and application | |
| CN204804908U (en) | Vehicle exhaust purifier | |
| CN105498742B (en) | A kind of potassium basis soot combustion catalyst and preparation method thereof | |
| CN108906072A (en) | A kind of diesel vehicle soot particle urges combustion catalyst and preparation method thereof | |
| CN101444743B (en) | Catalyst for processing particles in diesel engine emissions, and preparation method thereof | |
| CN109281734B (en) | A kind of automobile speed-raising energy-saving and purifying catalyst converter | |
| CN206522182U (en) | Explosion-proof type diesel motor exhaust processing equipment | |
| CN201007245Y (en) | Air filtering device for environmental protection energy conservation type diesel oil internal-combustion engines | |
| CN115318303A (en) | Catalyst for removing soot particles of diesel vehicle at low temperature and preparation method thereof | |
| CN205154311U (en) | Environmental protection dust -protection type tail gas cleanup unit | |
| CN208702505U (en) | Diesel engine exhaust gas purification device | |
| CN106481404A (en) | Exhaust purifier | |
| CN206592177U (en) | A kind of tail gas from diesel electric generator processing unit | |
| CN205532792U (en) | Automobile tail gas filter | |
| CN205779253U (en) | A kind of diesel engine of hot tail gas processing means | |
| CN110327916A (en) | A kind of oxidated diesel oil vehicle carbon soot particles of high activity and the armorphous manganese oxide catalyst of NO | |
| CN108798837A (en) | A kind of device improving automobile engine using new energy resources effects of energy saving and emission reduction | |
| CN208106538U (en) | A kind of automobile exhaust purifier being easily installed | |
| CN216477524U (en) | Diesel engine tail gas emission purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |