CN106185928B - The preparation method of activated carbon containing cerium - Google Patents
The preparation method of activated carbon containing cerium Download PDFInfo
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- CN106185928B CN106185928B CN201610558659.8A CN201610558659A CN106185928B CN 106185928 B CN106185928 B CN 106185928B CN 201610558659 A CN201610558659 A CN 201610558659A CN 106185928 B CN106185928 B CN 106185928B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
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Abstract
The invention discloses a kind of preparation methods of the activated carbon containing cerium.The method of the present invention includes following steps：(1) cerium compound, alkaline earth metal compound are uniformly mixed with oil-based asphalt or coal-based pitch, obtain mixture；(2) mixture is carbonized at 400~600 DEG C, to obtain the first carbonized product；(3) the first carbonized product is carbonized at 650~800 DEG C, is then cooled to room temperature, to obtain the second carbonized product；(4) the second carbonized product is ground to carbon dust, it is mixed with alkali metal compound, then activated at 350~800 DEG C, to obtain activation products；(5) activation products are obtained into activated carbon by processing.The method of the present invention directly mixes cerium-containing compound with the raw material of manufacture activated carbon to manufacture active rare-earth charcoal, thus improves the stability of active rare-earth Carbon composites.
Description
Technical field
The present invention relates to a kind of preparation method of the activated carbon containing cerium, it is particularly useful for filtering the work containing cerium of tap water
The preparation method of property charcoal.
Background technology
With the improvement of people ' s living standards and the appearance of water environment pollution, people propose higher want for water quality
It asks.Activated carbon has been widely used for as a kind of filtering material in water treatment technology.
Activated carbon is a kind of porous material, has huge specific surface area, thus it is miscellaneous to adsorb the suspended matter in water etc.
Matter；But it is then weaker for the adsorption capacity of some organic matters in water.Rare earth element is introduced in activated carbon, can be improved
The ability of its Organic substance in water of degrading.Currently, having there is the activated carbon of the supported rare earth for water treatment technology.
For example, CN105645558A discloses a kind of catalytic wet oxidation processing method of industrial circulating water, wherein using
Catalyst include carrier and active metal component, wherein using transition metal and rare earth metal as active metal component, carrier is
Using the activated carbon of the mesh of 150 mesh~300 as core, using amorphous silica-alumina as shell.The catalyst is prepared as follows：Amorphous
During sial plastic, the activated carbon for introducing 150~300 mesh is beaten the slurries to be formed, and the material after obtained plastic carries out old
Change, be filtered, washed, dry, catalyst carrier is made, on a catalyst support impregnating metal component, then dries, in indifferent gas
The lower roasting of body protection, obtains catalytic wet oxidation catalyst.
For another example, CN105214641A discloses a kind of preparation method of RE composite：Choose Ce, Zr, La, Pr, Nd, Yb etc.
Compound be presoma, prepare ternary, quaternary and polynary RE composite respectively；Powdery porous activated carbon is placed in accordingly
Precursor solution in, then stir, absorption is added precipitating reagent and precipitated to mixture again after a certain period of time, adjusts appropriate pH
Value, after precipitation is complete, ageing is calcined at high temperature after filter washing, drying.
For another example, CN104496011B discloses a kind of preparation method of rare earth-activated carbon bio-catalytical oxidation sludge：It takes dilute
The waste residue and concentrations by weight be by the waste residue of alloy containing mixed rare earth oxide 5wt%~10wt% in the production of native ore
10%~60% hydrochloric acid is mixed according to weight ratio 1: 1~4, is sufficiently stirred activation 6~12 hours, is staticly settled, and is separated by solid-liquid separation,
The solid is mixed rare-earth oxide；Activated sludge is taken, active carbon powder and mixed rare-earth oxide, stirring is added
2.5~3.5h stops 1.5~2.5h of stirring, and when stopping stirring, active carbon powder and mixed rare-earth oxide swim in the water surface,
The step of repeating to stir and stop stirring, after 2~7 days, when stopping stirring, active carbon powder and mixed rare-earth oxide are not
It floats again, removes water layer above, obtain rare earth-activated carbon bio-catalytical oxidation sludge.
The above method is all that will contain the compound of rare earth element to mix with active carbon finished products or by the change containing rare earth element
Object is closed to be impregnated in active carbon finished products, thus the adhesive force of rare earth element and activated carbon is not strong, and rare earth element is caused to be easy from work
It is oozed out in property charcoal, thus its stability is not high.
Invention content
In order to overcome drawbacks described above, present inventor to have made intensive studies, find compound and system containing cerium
The stability of cerium-activity Carbon composites can be improved to manufacture active rare-earth charcoal by making the raw material directly mixing of activated carbon, to complete
At the present invention.
It is simple for process the purpose of the present invention is to provide a kind of preparation method of active rare-earth charcoal, stabilization can be obtained
The high active rare-earth charcoal of property.It is therein dilute it is another object of the present invention to provide active rare-earth charcoal prepared by the above method
Earth elements are not easy to ooze out from activated carbon.Above-mentioned purpose may be implemented in the following technical solution of the present invention.
The present invention provides a kind of preparation method of the activated carbon containing cerium, includes the following steps：
(1) cerium compound, alkaline earth metal compound are uniformly mixed with pitch, obtain mixture；Wherein, the pitch
For oil-based asphalt or coal-based pitch；
(2) mixture is carbonized at 400~600 DEG C, to obtain the first carbonized product；
(3) the first carbonized product is carbonized at 650~800 DEG C, is then cooled to room temperature, to obtain the second carbonization
Product；
(4) the second carbonized product is ground to carbon dust, it is mixed with alkali metal compound, then in 350~800 DEG C of work
Change, to obtain activation products；
(5) activation products are obtained into activated carbon by processing.
Preparation in accordance with the present invention, it is preferable that in step (1), cerium compound, alkaline earth metal compound and pitch
Weight ratio be 0.1~3.5：2~10：100.
Preparation in accordance with the present invention, it is preferable that in step (1), the cerium compound is ammonium ceric nitrate, nitric acid
Cerium, cerous sulfate, cerous sulfate, cerous carbonate, cerium oxide, cerous acetate or cerium oxalate.
Preparation in accordance with the present invention, it is preferable that in step (1), the alkaline earth metal compound is selected from alkaline earth
Oxide, hydroxide, chloride, bromide, iodide, fluoride, phosphate, carbonate, sulfide, the sulfate of metal
Or nitrate.
Preparation in accordance with the present invention, it is preferable that in step (1), the softening point of the pitch is 75~95 DEG C,
The softening point is measured using the ring and ball method of GB/T 15332-94.
Preparation in accordance with the present invention, it is preferable that in step (4), the alkali metal compound is selected from hydroxide
Sodium or potassium hydroxide；The dosage of the alkali metal compound is 2~5 times of carbon dust weight.
Preparation in accordance with the present invention, it is preferable that in step (1), by cerium compound, alkaline earth metal compound and drip
Blueness is uniformly mixed at 80~150 DEG C, obtains mixture；
In step (2), which is warming up to 400~600 DEG C with 6~20 DEG C/h, keeps the temperature 5 at such a temperature
The first carbonized product is obtained after~20 hours；
In step (3), first carbonized product is warming up to 650~800 DEG C with 30~80 DEG C/h, heat preservation
0.5~3 hour, then cooled to room temperature, obtained the second carbonized product.
Preparation in accordance with the present invention, it is preferable that in step (4), second carbonized product is ground to put down
The carbon dust that equal grain size is 20~500 microns, which is uniformly mixed with alkali metal compound, and is fitted into container；By the appearance
Device heats in activation furnace, and 350~550 DEG C are warming up to 3~10 DEG C/min of the rate of heat addition, at such a temperature keep 30~
It 100 minutes, is heated 10~60 minutes at 750~850 DEG C, is then cooled to room temperature, is lived under the protection of protective gas
Change product.
Preparation in accordance with the present invention, it is preferable that in step (5), the processing is：The activation products are used
The hydrochloric acid of 0.6~3mol/L neutralizes, and then with the salt acid elution of 0.06~0.3mol/L, is washed with water and washs；The washing is produced
Object is dried with stream of hot air, and activated carbon is obtained after sieving.
The present invention also provides a kind of activated carbon obtained by above-mentioned preparation method, the average grain diameter of the activated carbon is 20
~500 microns, specific surface area is 500~2800m2/ g, and the cerium containing 0.1~1.0wt%.
The present invention directly mixes cerium-containing compound with the raw material of manufacture activated carbon to manufacture cerium-activity Carbon composites, this
Rare earth element is just placed in the forming process of activated carbon in the agent structure of activated carbon by sample.With traditional preparation process phase
Than method of the invention can make the combination of rare earth element and activated carbon more secured, thus it is compound to improve cerium-activated carbon
The stability of object.
Specific implementation mode
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
<The preparation method of activated carbon>
The preparation method of the activated carbon containing cerium of the present invention includes multiple steps：(1) mixing step；(2) first carbonization steps
Suddenly；(3) second carburising steps；(4) activation step；(5) post-processing step.
The step (1) of the present invention is mixing step：Cerium compound, alkaline earth metal compound are uniformly mixed with pitch, obtained
To mixture；Wherein, the pitch is oil-based asphalt or coal-based pitch.Specifically, can by heating by cerium compound,
Alkaline earth metal compound is uniformly mixed with pitch.For example, the pitch and cerium compound, alkaline earth metal compound that after-tack will be heated
It is uniformly mixed；For another example, pitch is mixed with cerium compound, alkaline earth metal compound, is then heated.Mixed mode is not
There is special limitation, as long as they are uniformly mixed.For example, drip is added in cerium compound powder, alkaline earth metal compound powder
In green powder, then stirring to obtain mixture.Agitating mode is not particularly limited, and Henschel mixer, V-type can be used mixed
Conjunction machine etc..A specific implementation mode according to the present invention, by cerium compound, alkaline earth metal compound and pitch 80~150
DEG C, be uniformly mixed at preferably 100~120 DEG C, obtain mixture.
In above-mentioned steps, the weight ratio of cerium compound, alkaline earth metal compound and pitch can be 0.1~3.5：2~
10：100；That is, in terms of 100 parts by weight pitches, cerium compound is 0.1~3.5 parts by weight, alkaline earth metal compound 2
~10 parts by weight.Preferably, the weight ratio of cerium compound, alkaline earth metal compound and pitch can be 0.2~3：2~10：
100；More preferably, the weight ratio of cerium compound, alkaline earth metal compound and pitch can be 0.3~2：2~10：100.Alkali
When the content of earth metal compound is too low, it is not enough to play the catalytic action of activation step, the content of alkaline earth metal compound
When too high, it is unfavorable for rare earth element being stabilized in activated carbon.
In above-mentioned steps, the cerium compound can be ammonium ceric nitrate, cerous nitrate, cerous sulfate, cerous sulfate, carbonic acid
Cerium, cerium oxide, cerous acetate or cerium oxalate；Preferably cerous sulfate, cerous carbonate or cerium oxide.The alkaline earth metal compound of the present invention can
With oxide, hydroxide, chloride, bromide, iodide, fluoride, phosphate, carbonate, sulphur selected from alkaline-earth metal
Compound, sulfate or nitrate.Preferably, alkaline earth metal compound of the invention can be selected from oxide, the hydrogen of alkaline-earth metal
Oxide, carbonate or nitrate；It is highly preferred that it is carbonate.The alkali earth metal of the present invention is the 2nd race of periodic table member
Element, such as Be, Mg, Ca, Sr, Ba and Ra；Preferably Mg and Ca.The present invention alkaline earth metal compound specific example include but
It is not limited to calcium carbonate, calcium oxide, titanium dioxide, magnesia, magnesium carbonate etc..These alkaline earth metal compounds can be used alone,
Or two or more combined uses.The softening point of the pitch of the present invention can be 75~95 DEG C, preferably 80~90 DEG C.The softening
Point is measured using GB/T 15332-94 (ring and ball method).
The step (2) of the present invention is the first carburising step：The mixture is carbonized at 400~600 DEG C, to obtain
First carbonized product.A specific implementation mode according to the present invention, by the mixture with 6~20 DEG C/h of the first heating
Rate is warming up to 400~600 DEG C of the first carburizing temperature, and keep the temperature 5~20 hours at such a temperature obtains after (the first soaking time)
First carbonized product.The mixture can be begun to warm up or direct from the mixing temperature (80~150 DEG C) of step (1) from room temperature
It begins to warm up.The first heating rate is preferably 8~15 DEG C/h, more preferably 10~12 DEG C/h.First carburizing temperature is excellent
It is selected as 450~560 DEG C, preferably 500~550 DEG C.First soaking time is preferably 8~15 hours, preferably 10~12 hours.
The step (3) of the present invention is the second carburising step：First carbonized product is carbonized at 650~800 DEG C, so
Postcooling is to room temperature, to obtain the second carbonized product.A specific implementation mode according to the present invention, by first carbonization
Product is warming up to 650~800 DEG C of the second carburizing temperature with 30~80 DEG C/h of the second heating rate, keeps the temperature 0.5~3 hour
(the second soaking time), then cooled to room temperature, obtains the second carbonized product.First carbonized product can be from the first carbonization
Temperature starts to warm up.Second heating rate is preferably 35~70 DEG C/h, more preferably 50~60 DEG C/h.Second carbonization temperature
Preferably 680~760 DEG C, preferably 700~750 DEG C of degree.Second soaking time is preferably 0.8~2 hour, preferably 1~1.5
Hour.
In step (2)~(3) of the present invention, by asphalt carbonization, so as to cause pyrolytic reaction.Gas in pitch and light
Fraction is resolved out, and then polycondensation is solid to residue.The carburising step of the present invention determines the structure of activated carbon, and ensures dilute
Earth elements being stabilized in activated carbon.First carburizing temperature is between 400~600 DEG C, it is ensured that the pyrolysis in pitch
Reaction is abundant, and avoids generating excessive graphite-like microstructure part.Second carburizing temperature is at 650~800 DEG C, Ke Yibao
The carbonization for demonstrate,proving pitch is abundant, and avoids generating excessive graphite-like microstructure part.By the first heating rate, the second heating
Rate control can further increase stability of the rare earth element in activated carbon so that rare earth element in the scope of the present invention
It is combined more closely with activated carbon.By the activated carbon natural cooling (Slow cooling) after carbonization, the intensity of activated carbon can be improved,
And rare earth element is tightly combined with activated carbon.
The density of the activated carbon obtained by the first carburising step, the second carburising step can be 1.3~1.6 grams/cube
Centimetre, preferably 1.4~1.5 grams/cc.Above-mentioned density is measured by hydrometer method.
The step (4) of the present invention is activation step：Second carbonized product is ground to carbon dust, by itself and alkali metal compound
Mixing, then activates under 350~800 DEG C of activation temperature, to obtain activation products.A specific implementation according to the present invention
Second carbonized product is ground to the carbon dust that average grain diameter is 20~500 microns, by the carbon dust and alkali metal by mode
It closes object to be uniformly mixed, and is fitted into container；The container is heated in activation furnace, is heated up with 3~10 DEG C/min of the rate of heat addition
To 350~550 DEG C, is kept for 30~100 minutes at such a temperature, heat 10~60 minutes at 750~850 DEG C, then protecting
It protects under the protection of gas and is cooled to room temperature, obtain activation products.The average grain diameter of carbon dust after grinding is preferably 30~350 micro-
Rice, more preferably 50~300 microns.The lapping mode of the present invention is not particularly limited, and jet mill, vibromill can be used for example
Deng conventional milling apparatus.Carbon dust is ground to above-mentioned particle size range, can extend and live to avoid the stripping of rare earth element and activated carbon
Service life of the property charcoal as adsorbent.
In the step (4) of the present invention, the alkali metal compound can be selected from sodium hydroxide or potassium hydroxide；It is preferred that
For potassium hydroxide.The dosage of the alkali metal compound can be 2~5 times, preferably 2~3 times of carbon dust weight.Aforementioned carbon
Change the carbon dust that step obtains to activate in the presence of alkali metal compound, for example, carbon dust and alkali metal compound are formed into mixture,
Then it fills this blend into nickel container and is heated.It heats the activation furnace used to be not particularly limited, this can be used
Those of known to field.
In the step (4) of the present invention, activation temperature can be 350~800 DEG C, preferably 400~750 DEG C.The present invention's
Activation process can carry out in the inert atmospheres such as nitrogen, argon gas.Furthermore it is possible to introduce carbon dioxide etc..To fill carbon dust with
The container of alkali metal compound is warming up in activation furnace with 3~10 DEG C/min, preferably 5~8 DEG C/min of the rate of heat addition
It 350~550 DEG C, preferably 400~500 DEG C, is kept for 30~100 minutes, preferably 50~80 minutes at such a temperature, 750~850
DEG C, heat 10~60 minutes, preferably 20~30 minutes at preferably 750~800 DEG C, then in protective gas such as nitrogen, argon gas
It is cooled to room temperature under protection, obtains activation products.
In activation process, alkali metal compound is reacted with the substance in carbon dust, and the gas of formation can make carbon
Powder foams, and the alkali metal of formation then enters in carbon-coating, to form many gaps.
The step (5) of the present invention is post-processing step：Activation products are obtained into activated carbon by processing.It is according to the present invention
One specific implementation mode, the processing are：The activation products hydrochloric acid of 0.6~3mol/L is neutralized, is then used
The salt acid elution of 0.06~0.3mol/L, is washed with water and washs；The washed product is dried with stream of hot air, and is sieved and is lived
Property charcoal.Preferably, salt acid elution and water washing carry out under boiling conditions.
In the step (5) of the present invention, is neutralized and washed using hydrochloric acid, detersive efficiency, and hydrochloric acid can be improved
It easily removes.The concentration of neutralization hydrochloric acid can be 0.6~3mol/L, preferably 0.8~2.5mol/L, more preferably 1.0~
2mol/L.The concentration of washing hydrochloric acid can be 0.06~0.3mol/L, preferably 0.08~0.25mol/L, more preferably 0.1
~0.2mol/L.The hydrochloric acid of suitable concentration can prevent rare-earth element cerium from being oozed out from activated carbon, in addition can also wash away knot
Close unstable cerium.By activation products and mixed in hydrochloric acid so that acid-base neutralization, and then remove alkali metal compound.After neutralization
Activation products and mixed in hydrochloric acid are washed 1~24 hour, preferably 2 under 55~105 DEG C, preferably 80~100 DEG C of heating condition
~15 hours, more preferably 2~5 hours；Washing times are 2~5 times.It can be distilled water or deionized water to wash the water used
Deng preferably being washed under boiling conditions.
In the step (5) of the present invention, the washed product stream of hot air is dried to obtain desciccate, dry temperature
Degree can be 110~180 DEG C, preferably 120~150 DEG C.After desciccate is sieved, activated carbon is obtained.Sieve used
Mesh number is 32~800 mesh, preferably 45~460 mesh, more preferably 50~350 mesh.
<Activated carbon>
The average grain diameter of the activated carbon of the present invention is 20~500 microns, preferably 30~350 microns, is preferably 50~300
Micron.Its specific surface area is 500~2800m2/ g, preferably 1000~2500m2/g.It can contain in the activated carbon of the present invention
The cerium of the cerium of 0.1~1.0wt%, the preferably cerium of 0.2~0.8wt%, more preferably 0.5~0.7wt%.The present invention draws cerium
Enter in activated carbon, in above-mentioned content range, cerium can be stable in the presence of in activated carbon, and can play good catalytic action.
The activated carbon of the present invention can be used as adsorbent, preferably as the adsorbent of water process, more preferably be drunk
The adsorbent of water process.
<Main performance test method>
It is (logical using the high-speed automated specific surface area of NOVA-1000e types and lacunarity analysis instrument of Kang Ta instrument companies of the U.S.
Cross BET method) measure BET specific surface area.
Average grain diameter is measured using U.S.'s Beckman Kurt LS13-320 series laser Particle Size Analyzers.
Rare earth element content is measured using the NexION 300X type sense couple plasma mass spectrometers of PE companies of the U.S..Its
In, the rare earth element assay in water refers to following document：" ICP-MS methods measure 17 kinds of rare earth elements in source water simultaneously ",
Square swallow etc., Shandong chemical industry, the 1st phase of volume 42, the 43-44 pages, 2013 years.
Embodiment 1
4.5 grams of cerium chloride (CeCl are added in 1000 grams of coal tar pitch (softening point is 90 DEG C)3), 30 grams of calcium carbonate, 100
It is uniformly mixed at DEG C and obtains mixture.The mixture is warming up to 550 DEG C from 100 DEG C with 10 DEG C/h, heat preservation obtains after 10 hours
To the first carbonized product.First carbonized product is warming up to 700 DEG C with 60 DEG C/h from 550 DEG C, keeps the temperature 1 hour, it is then natural
It is cooled to room temperature, obtains the second carbonized product.Second carbonized product is ground, by 200 mesh screens, is to obtain average grain diameter
75 microns of carbon dust, by itself and potassium hydroxide (mass ratio 1：3) it is uniformly mixed, and is fitted into nickel matter container；The container is existed
Continuous activating oven heats, and 400 DEG C are warming up to 5 DEG C/min of the rate of heat addition, is kept for 60 minutes at such a temperature, then at 750 DEG C
Lower heating 20 minutes, is then cooled to room temperature, obtains activation products under nitrogen protection.By the hydrochloric acid of activation products 1mol/L
It neutralizes, is then washed three times with the hydrochloric acid of 0.1mol/L (boiling), then washed with distilled water (boiling) and obtain washed product three times；
Washed product is dried at 120 DEG C with stream of hot air, and by 200 mesh screens, obtains active product char A1.After testing, should
The average grain diameter of active product char is 75 microns, specific surface area 2050m2/ g, and the cerium containing 0.65wt%.
Active product char A1 is placed in as adsorbent in water-purifying filter, processing is filtered to tap water, is run
After 1500 hours, Ce elements are not detected in water.
Embodiment 2
Other than replacing coal tar pitch using asphalt, other conditions and parameter are same as Example 1, obtain activated carbon
Product A2.After testing, the average grain diameter of the activity product char be 75 microns, specific surface area 2010m2/ g, and contain
The cerium of 0.65wt%.
Active product char A2 is placed in as adsorbent in water-purifying filter, processing is filtered to tap water, is run
After 1500 hours, Ce elements are not detected in water.
Embodiment 3
In addition to using 3 grams of cerium oxide (CeO2) replace except 4.5 grams of cerium chlorides, other conditions and parameter and 1 phase of embodiment
Together, active product char A3 is obtained.After testing, the average grain diameter of the activity product char be 75 microns, specific surface area 1980m2/ g,
And the cerium containing 0.8wt%.
Active product char A3 is placed in as adsorbent in water-purifying filter, processing is filtered to tap water, is run
After 1500 hours, Ce elements are not detected in water.
Present invention is not limited to the embodiments described above, without departing from the essence of the present invention, this field skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.
Claims (3)
1. a kind of preparation method of the activated carbon containing cerium, which is characterized in that include the following steps：
4.5 grams of cerium chloride CeCl are added in the coal tar pitch that 1000 grams of softening points are 90 DEG C3With 30 grams of calcium carbonate, mixed at 100 DEG C
Conjunction uniformly obtains mixture；The mixture is warming up to 550 DEG C from 100 DEG C with 10 DEG C/h, heat preservation obtains first after 10 hours
Carbonized product；First carbonized product is warming up to 700 DEG C with 60 DEG C/h from 550 DEG C, 1 hour is kept the temperature, then naturally cools to
Room temperature obtains the second carbonized product；Second carbonized product is ground, by 200 mesh screens to obtain average grain diameter as 75 microns
Carbon dust, according to mass ratio be 1 by gained carbon dust and potassium hydroxide:3 are uniformly mixed, and are fitted into nickel matter container；By the container
It is heated in continuous activating oven, 400 DEG C is warming up to 5 DEG C/min of the rate of heat addition, kept for 60 minutes at such a temperature, then 750
It is heated 20 minutes at DEG C, is then cooled to room temperature under nitrogen protection, obtains activation products；By the salt of activation products 1mol/L
Acid neutralizes, and then three times with the salt acid elution of 0.1mol/L boiled, then obtains washing production three times with the distillation water washing boiled
Object；Washed product is dried at 120 DEG C with stream of hot air, and by 200 mesh screens, obtains active product char；Gained activity
The average grain diameter of product char is 75 microns, specific surface area 2050m2/ g, and the cerium containing 0.65wt%.
2. a kind of preparation method of the activated carbon containing cerium, which is characterized in that include the following steps：
4.5 grams of cerium chloride CeCl are added in the asphalt that 1000 grams of softening points are 90 DEG C3With 30 grams of calcium carbonate, at 100 DEG C
It is uniformly mixed and obtains mixture；The mixture is warming up to 550 DEG C from 100 DEG C with 10 DEG C/h, heat preservation obtains the after 10 hours
One carbonized product；First carbonized product is warming up to 700 DEG C with 60 DEG C/h from 550 DEG C, keeps the temperature 1 hour, then natural cooling
To room temperature, the second carbonized product is obtained；Second carbonized product is ground, it is micro- for 75 to obtain average grain diameter by 200 mesh screens
Gained carbon dust and potassium hydroxide according to mass ratio are 1 by the carbon dust of rice:3 are uniformly mixed, and are fitted into nickel matter container；By the appearance
Device is heated in continuous activating oven, and 400 DEG C are warming up to 5 DEG C/min of the rate of heat addition, is kept for 60 minutes at such a temperature, then
It is heated 20 minutes at 750 DEG C, is then cooled to room temperature under nitrogen protection, obtains activation products；By activation products 1mol/L
Hydrochloric acid neutralize, then three times, then with the distillation water washing boiled washed three times with the salt acid elution of 0.1mol/L boiled
Wash product；Washed product is dried at 120 DEG C with stream of hot air, and by 200 mesh screens, obtains active product char；Gained
The average grain diameter of active product char is 75 microns, specific surface area 2010m2/ g, and the cerium containing 0.65wt%.
3. a kind of preparation method of the activated carbon containing cerium, which is characterized in that include the following steps：
3 grams of cerium oxide CeO are added in the coal tar pitch that 1000 grams of softening points are 90 DEG C2With 30 grams of calcium carbonate, mixed at 100 DEG C
Uniformly obtain mixture；The mixture is warming up to 550 DEG C from 100 DEG C with 10 DEG C/h, heat preservation obtains the first carbon after 10 hours
Change product；First carbonized product is warming up to 700 DEG C with 60 DEG C/h from 550 DEG C, 1 hour is kept the temperature, then naturally cools to room
Temperature obtains the second carbonized product；Second carbonized product is ground, by 200 mesh screens to obtain average grain diameter as 75 microns
Gained carbon dust and potassium hydroxide according to mass ratio are 1 by carbon dust:3 are uniformly mixed, and are fitted into nickel matter container；The container is existed
Continuous activating oven heats, and 400 DEG C are warming up to 5 DEG C/min of the rate of heat addition, is kept for 60 minutes at such a temperature, then at 750 DEG C
Lower heating 20 minutes, is then cooled to room temperature, obtains activation products under nitrogen protection；By the hydrochloric acid of activation products 1mol/L
It neutralizes, then three times, then with the distillation water washing boiled obtains washed product three times with the salt acid elution of 0.1mol/L boiled；
Washed product is dried at 120 DEG C with stream of hot air, and by 200 mesh screens, obtains active product char；Gained activated carbon produces
The average grain diameter of object is 75 microns, specific surface area 1980m2/ g, and the cerium containing 0.8wt%.
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