CN106475091B - The preparation method of the catalyst of catalytic degradation chlorine residue - Google Patents
The preparation method of the catalyst of catalytic degradation chlorine residue Download PDFInfo
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- CN106475091B CN106475091B CN201611068246.8A CN201611068246A CN106475091B CN 106475091 B CN106475091 B CN 106475091B CN 201611068246 A CN201611068246 A CN 201611068246A CN 106475091 B CN106475091 B CN 106475091B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—Manganese
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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Abstract
The present invention provides a kind of preparation method of the catalyst of catalytic degradation chlorine residue, belongs to catalyst field, solves existing removal chlorine residue mode and handles the problems such as time is long, energy consumption is big, degradation speed is slow.It include: the sodium silicate solution that appropriate concentration is added into reactor and is 10~35%；By aluminium salt and manganese salt by the aluminium manganese solution that molar concentration rate is that 2~5:1 is configured to that total concentration is 0.5~1.0mol/L；Sodium silicate solution is heated to 40~80 DEG C, is added into reactor after being reacted with the aluminium manganese solution that the molar concentration rate of sodium silicate solution is 1:20~30, pH to 12.5~13.5 is adjusted with the sulfuric acid that molar concentration is 3.5~8.5mol/L and obtains siliceous colloid liquid；Quality is added to be sufficiently stirred to obtain gel through the processed activated carbon particles of acidleach for silicic acid quality 0.5~3%；The sulfuric acid acidified gel for being 3.5~8.5mol/L with molar concentration is 6.5~7.5 to pH, enters molding oil bath reaction column granulating and forming through granulation disc, aging cleans to obtain silicon particle；Silicon particle is dipped in water, with the calcium hydroxide solution tune pH that concentration is 0.1~0.5mol/L to 9~10 reamings and modification, cleaning, drying obtain catalyst.
Description
Technical field
The present invention relates to catalyst preparation technical field more particularly to a kind of preparation sides of the catalyst of catalytic degradation chlorine residue
Method.
Background technique
Chlorination is the disinfectant that application time is earliest in water prevention and cure of pollution and water treatment, use scope is most wide.Chlorine
In disinfectant, chlorine residue (hypochlorous acid, HOCl) is most important one ingredient.The use of chlorhexidine-containing disinfectant is to reduction water-borne epidemic
Occur and extend average human life and played great function, but chlorhexidine-containing disinfectant it is remaining and its with Organic substance in water, inorganic matter shape
At disinfection by-products may to human health generate serious harm.Disinfection by-products is considered generally existing in drinking water
Carcinogen, that recognizes now has had several hundred kinds.Chlorine residue and its reaction product itself are again Taste and odor compounds in drinking water
Dominant species.Thus after completing disinfection, tap water just very must with reducing its harm before use, reduce or eliminate chlorine residue
It wants.
The conventional method of chlorine residue removal mainly has absorption degradation method, heating and sunning method etc..On the one hand sunning method passes through
Solar irradiation is degraded chlorine residue, and the volatilization of chlorine is on the other hand also leaned on, although at low cost, easy to operate, exist the processing time it is long,
The inconveniences such as take up a large area.Heating is mainly to utilize the thermal decomposition of chlorine residue substance, and this method energy consumption is big, and
There is complicated variation between period disinfectant and disinfection by-products, is typically only capable to use in small range.Absorption degradation method be with
Active carbon is primary sorbent or is modified its absorption property of raising, or carries out catalytic degradation with this, and this mode is at low cost
And treating capacity is big, but normal activated carbon, there are absorption degradation speed is slow, adsorbed pollutant may increase again with temperature
The problems such as separate out, largely discarded active carbon is difficult.
Summary of the invention
Present invention aim to address the modes for removing chlorine residue in the prior art to handle time length, takes up a large area, the energy
The technical problems such as consumption is big, application range is small, degradation speed is slow, waste is difficult to handle provide a kind of catalytic degradation chlorine residue
The preparation method of catalyst.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of preparation method of the catalyst of catalytic degradation chlorine residue, comprising the following steps:
1) sodium silicate solution that suitable mass percent is 10~35% is added into reactor；
2) prepare aluminium manganese solution: by molar concentration rate being 2~5:1 by aluminium salt and manganese salt, be configured to total concentration be 0.5~
The aluminium manganese solution of 1.0mol/L；
3) sodium silicate solution in reactor is heated to 40~80 DEG C under conditions of abundant oscillation, then to reactor
The molar concentration rate of middle addition aluminium manganese solution, sodium silicate solution and aluminium manganese solution is 1:20~30, is reacted, then with mole
The hydrochloric acid that the sulfuric acid or molar concentration that concentration is 3.5~8.5mol/L are 4~9mol/L adjusts pH to 12.5~13.5, obtains silicon
Acid colloids liquid；
4) it is silicic acid quality 0.5~3% through the processed activated carbon particles of acidleach that quality is added into siliceous colloid liquid
It is sufficiently stirred, obtains gel；The processed activated carbon particles of acidleach are by partial size be 10~20 mesh active carbon pure water
After cleaning surface powder and impurity, with volume is active carbon volume 2~5 times, molar concentration be the dilute of 0.05~0.1mol/L
The dilute hydrochloric acid of sulfuric acid or 0.1~0.2mol/L dipping are made；
5) under abundant oscillating condition, the sulfuric acid acidified gel for being 3.5~8.5mol/L with molar concentration to pH is 6.5~
7.5, and enter molding oil bath reaction column granulating and forming, aging and cleaning through granulation disc, obtain silicon particle；
6) silicon particle is dipped in water, and is expanded with the calcium hydroxide solution tune pH to 9~10 that concentration is 0.1~0.5mol/L
Hole and modification, cleaning, drying obtain catalyst.
Optionally, the molar concentration rate of aluminium salt and manganese salt is 3:1 in the aluminium manganese solution.
Optionally, the active carbon of the processed activated carbon particles of the acidleach to be by partial size be 10~20 mesh is cleaned with pure water
After surface powder and impurity, with volume is active carbon volume 2 times, molar concentration be 0.05~0.1mol/L dilute sulfuric acid impregnate
It is made.
Optionally, the molar concentration of the calcium hydroxide solution is 0.2mol/L.
Optionally, the aluminium salt is aluminum sulfate or aluminium chloride, and the manganese salt is manganese sulfate or manganese chloride.
Optionally, the activated carbon particles are coaly activated carbon particle or wood activated charcoal particle.
Optionally, catalyst obtained in water for dechlorinating.
In the present invention, aluminum ions addition is the frame strength for increasing catalyst, surface tension when reducing adsorption dewatering
It influences, enhances granule strength, prevent catalyst from meeting water and burst apart.Meanwhile reaming is carried out using calcium hydroxide solution tune pH to 9~10
When, the aluminium dissolution in part of the surface structure advantageously forms catalysis interface more efficiently.Manganese ion is imitated for fortifying catalytic
Fruit.The purpose of addition active carbon is the core as further gel, while playing the purpose of auxiliary absorption, degradation chlorine residue.
Technical solution of the present invention, provides that a kind of preparation process is succinct, catalysis low in cost, being easy to industrializing implementation
The preparation method of the catalyst of degradation chlorine residue.In addition, the catalyst prepared by this method is to free chlorine residual, chlorinatedorganic etc.
Substance removal ability is good, performance is stable, high mechanical strength, is not easy to burst apart, and effective storage life is long.The present invention is relative to background
Technology has the advantages that
1, the catalyst degradation chlorine residue performance synthesized by the present invention is prominent, to objects such as free chlorine residual, chlorinatedorganics
Matter removal ability is strong, more existing common except chlorine products (active carbon) removal chlorine residue efficiency improves 10~20 times.At this catalyst
Reason can promote tap water mouthfeel and reduce potential risk, can use in tap water quality improvement, can also be in the Shui nationality are equipped
It uses.It under catalyst regular service conditions, is dissolved out without harmful substance, performance is stablized, safety and effectivity.
2, preparation process of the present invention is simple and direct, small investment, cost of material is low, low energy consumption, can widespread adoption, and can recycle
It recycles, belongs to low-carbon technology developing direction, meet national society's energy-saving and emission-reduction developing direction.
To be verified the catalyst that is prepared of the present invention to the catalytic degradation effect of chlorine residue, following experiments are carried out:
NaClO raw water is configured as chlorine residue solution using pure water, and the catalyst degradation being prepared using the present invention is detected former
The concentration of NaClO in water, water outlet.Wherein, the content of NaClO is respectively 1.5,1.0,0.5mg/L in raw water, in reaction column effectively
Residence time is 3min.After reaction, NaClO degradation rate is measured up to 95.6%~98.9%, and using work under similarity condition
Property charcoal degradation chlorine residue control group, the degradation rate to NaClO is respectively 6.7~9.2%.And in water chlorine ion concentration it is corresponding on
It rises.As shown in Table 1, it is the catalyst prepared through the invention and removes the effect table of chlorine residue by active carbon.
Table one
| Catalyst | Calcium hydroxide is modified | Remove chlorine residue effect |
| Active carbon | Unmodified control | 6.7~9.2% |
| The catalyst that the present embodiment is prepared | Calcium hydroxide tune pH to 9.0 | 95.6% |
| The catalyst that the present embodiment is prepared | Calcium hydroxide tune pH to 10.0 | 98.9% |
Experimentation proves that the catalyst being prepared through the invention not only removes chlorine residue excellent, but also reacts fast
Speed.When being 1min between when reacted, the catalyst degradation effect that the present invention is prepared is apparently higher than control group, degradation speed
Rate is active carbon close to 20 times；And the catalyst degradation rate being prepared especially with calcium hydroxide tune pH to 10.0 is most fast,
98% or more chlorine residue can be decomposed when 3min.
For the persistence for examining above-mentioned catalyst, multiple removing chlorine residue has been carried out using the catalyst that the present invention is prepared
Experiment.The result shows that repeatedly the catalyst after reaction still retains strong except chlorine residue ability, illustrate that the present invention was prepared urges
Agent has the ability for persistently removing chlorine residue, and can use for a long time, and removal effect is not significantly affected, reaction rate is protected for a long time
It holds.
After the catalyst treatment tap water being prepared through the present invention, tap water mouthfeel can be promoted, and reduce its potential wind
Danger can use in tap water quality improvement, can also use in the Shui nationality are equipped.Above-mentioned catalyst regular service conditions
Under, it is dissolved out without harmful substance, performance is stablized, safety and effectivity.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
Embodiment 1
The preparation method of the catalyst of catalytic degradation chlorine residue in the present embodiment comprising following steps:
1) sodium silicate solution that suitable mass percent is 10~35% is added into reactor；
2) prepare aluminium manganese solution: by molar concentration rate being 2~5:1 by aluminium salt and manganese salt, be configured to total concentration be 0.5~
The aluminium manganese solution of 1.0mol/L；
3) sodium silicate solution in reactor is heated to 40~80 DEG C under conditions of abundant oscillation, then to reactor
The molar concentration rate of middle addition aluminium manganese solution, sodium silicate solution and aluminium manganese solution is 1:20~30, is reacted, then with mole
The hydrochloric acid that the sulfuric acid or molar concentration that concentration is 3.5~8.5mol/L are 4~9mol/L adjusts pH to 12.5~13.5, obtains silicon
Acid colloids liquid；
4) it is silicic acid quality 0.5~3% through the processed activated carbon particles of acidleach that quality is added into siliceous colloid liquid
It is sufficiently stirred, obtains gel；The processed activated carbon particles of acidleach are by partial size be 10~20 mesh active carbon pure water
After cleaning surface powder and impurity, with volume is active carbon volume 2~5 times, molar concentration be the dilute of 0.05~0.1mol/L
The dilute hydrochloric acid of sulfuric acid or 0.1~0.2mol/L dipping are made；
5) under abundant oscillating condition, with molar concentration be 3.5~8.5mol/L sulfuric acid acidified gel to pH6.5~
7.5, and enter molding oil bath reaction column granulating and forming, aging and cleaning through granulation disc, obtain silicon particle；
6) silicon particle is dipped in water, and the calcium hydroxide solution tune pH to 9~10 for being 0.1~0.5mol/L with concentration,
Reaming modification, is cleaned, is dry, and catalyst is obtained.
Optionally, the molar concentration rate of aluminium salt and manganese salt is 3:1 in the aluminium manganese solution.
Optionally, the active carbon of the processed activated carbon particles of the acidleach to be by partial size be 10~20 mesh is cleaned with pure water
After surface powder and impurity, with volume is active carbon volume 2 times, molar concentration be 0.05~0.1mol/L dilute sulfuric acid impregnate
It is made.
Optionally, the molar concentration of the calcium hydroxide solution is 0.2mol/L.
Optionally, the aluminium salt is aluminum sulfate or aluminium chloride, and the manganese salt is manganese sulfate or manganese chloride.
Optionally, the activated carbon particles are coaly activated carbon particle or wood activated charcoal particle.
Optionally, catalyst obtained in water for dechlorinating.
Embodiment 2
The preparation method of the catalyst of catalytic degradation chlorine residue in the present embodiment comprising following steps:
1) sodium silicate solution that 500ml mass percent is 30% is added into reactor；
2) prepare aluminium manganese solution: it is 3:1 that aluminum sulfate and manganese sulfate, which are pressed molar concentration rate, and being configured to total concentration is
The aluminium manganese solution of 1.0mol/L；
3) sodium silicate solution in reactor is heated to 80 DEG C under conditions of abundant oscillation, then added into reactor
Enter aluminium manganese solution, the molar concentration rate of sodium silicate solution and aluminium manganese solution is 1:20, is reacted, is then with molar concentration
The sulfuric acid of 6.5mol/L adjusts pH to 12.5, obtains siliceous colloid liquid；
4) it is sufficiently stirring through the processed activated carbon particles of acidleach for silicic acid quality 3% that quality is added into siliceous colloid liquid
It mixes, obtains gel；It is that the active carbons of 15 mesh cleans surface powder with pure water that the processed activated carbon particles of acidleach, which are by partial size,
After grain and impurity, with volume is active carbon volume 2 times, molar concentration be 0.1mol/L dilute sulfuric acid impregnate and be made；
5) under abundant oscillating condition, the sulfuric acid acidified gel for being 6.5mol/L with molar concentration is to pH6.5, and through being granulated
Disk enters molding oil bath reaction column granulating and forming, aging and cleaning, obtains silicon particle；
6) silicon particle is dipped in water, and the calcium hydroxide solution tune pH to 9 for being 0.2mol/L with concentration, reaming, modification,
It cleans, is dry, obtaining catalyst.
Optionally, the activated carbon particles are coaly activated carbon particle or wood activated charcoal particle.
Embodiment 3
The preparation method of the catalyst of catalytic degradation chlorine residue in the present embodiment comprising following steps:
1) sodium silicate solution that 300ml mass percent is 10% is added into reactor；
2) prepare aluminium manganese solution: it is 2:1 that aluminum sulfate and manganese chloride, which are pressed molar concentration rate, and being configured to total concentration is
The aluminium manganese solution of 0.7mol/L；
3) sodium silicate solution in reactor is heated to 60 DEG C under conditions of abundant oscillation, then added into reactor
Enter aluminium manganese solution, the molar concentration rate of sodium silicate solution and aluminium manganese solution is 1:25, is reacted, is then with molar concentration
The hydrochloric acid of 8.0mol/L adjusts pH to 13, obtains siliceous colloid liquid；
4) it is sufficiently stirring through the processed activated carbon particles of acidleach for silicic acid quality 2% that quality is added into siliceous colloid liquid
It mixes, obtains gel；It is that the active carbons of 10 mesh cleans surface powder with pure water that the processed activated carbon particles of acidleach, which are by partial size,
After grain and impurity, with volume is active carbon volume 3 times, molar concentration be 0.08mol/L dilute sulfuric acid impregnate and be made；
5) under abundant oscillating condition, the sulfuric acid acidified gel for being 3.5mol/L with molar concentration is to pH6.8, and through being granulated
Disk enters molding oil bath reaction column granulating and forming, aging and cleaning, obtains silicon particle；
6) silicon particle is dipped in water, and the calcium hydroxide solution tune pH to 10 for being 0.4mol/L with concentration, reaming are repaired
Decorations are cleaned, are dry, and catalyst is obtained.
Optionally, the activated carbon particles are coaly activated carbon particle or wood activated charcoal particle.
Embodiment 4
The preparation method of the catalyst of catalytic degradation chlorine residue in the present embodiment comprising following steps:
1) sodium silicate solution that 200ml mass percent is 35% is added into reactor；
2) prepare aluminium manganese solution: it is 5:1 that aluminium chloride and manganese chloride, which are pressed molar concentration rate, and being configured to total concentration is
The aluminium manganese solution of 0.5mol/L；
3) sodium silicate solution in reactor is heated to 40 DEG C under conditions of abundant oscillation, then added into reactor
Enter aluminium manganese solution, the molar concentration rate of sodium silicate solution and aluminium manganese solution is 1:30, is reacted, is then with molar concentration
The sulfuric acid of 3.5mol/L adjusts pH to 12.8, obtains siliceous colloid liquid；
4) it is the abundant through the processed activated carbon particles of acidleach of silicic acid quality 2.5% that quality is added into siliceous colloid liquid
Stirring, obtains gel；It is that the active carbons of 20 mesh cleans surface with pure water that the processed activated carbon particles of acidleach, which are by partial size,
After powder and impurity, with volume is active carbon volume 4 times, molar concentration be 0.2mol/L dilute hydrochloric acid impregnate and be made；
5) under abundant oscillating condition, the sulfuric acid acidified gel for being 4.5mol/L with molar concentration is to pH7.5, and through being granulated
Disk enters molding oil bath reaction column granulating and forming, aging and cleaning, obtains silicon particle；
6) silicon particle is dipped in water, and the calcium hydroxide solution tune pH to 9.5 for being 0.5mol/L with concentration, reaming are repaired
Decorations are cleaned, are dry, and catalyst is obtained.
Optionally, the activated carbon particles are coaly activated carbon particle or wood activated charcoal particle.
Embodiment 5
1) sodium silicate solution that 400ml mass percent is 20% is added into reactor；
2) prepare aluminium manganese solution: it is 4:1 that aluminium chloride and manganese sulfate, which are pressed molar concentration rate, and being configured to total concentration is
The aluminium manganese solution of 0.9mol/L；
3) sodium silicate solution in reactor is heated to 50 DEG C under conditions of abundant oscillation, then added into reactor
Enter aluminium manganese solution, the molar concentration rate of sodium silicate solution and aluminium manganese solution is 1:28, is reacted, is then with molar concentration
The sulfuric acid of 8.5mol/L adjusts pH to 13.5, obtains siliceous colloid liquid；
4) it is the abundant through the processed activated carbon particles of acidleach of silicic acid quality 0.5% that quality is added into siliceous colloid liquid
Stirring, obtains gel；It is that the active carbons of 18 mesh cleans surface with pure water that the processed activated carbon particles of acidleach, which are by partial size,
After powder and impurity, with volume is active carbon volume 5 times, molar concentration be 01mol/L dilute hydrochloric acid impregnate and be made；
5) under abundant oscillating condition, the sulfuric acid acidified gel for being 8.5mol/L with molar concentration is to pH7.2, and through being granulated
Disk enters molding oil bath reaction column granulating and forming, aging and cleaning, obtains silicon particle；
6) silicon particle is dipped in water, and the calcium hydroxide solution tune pH to 9.2 for being 0.1mol/L with concentration, reaming are repaired
Decorations are cleaned, are dry, and catalyst is obtained.
Optionally, the activated carbon particles are coaly activated carbon particle or wood activated charcoal particle.
Claims (7)
1. a kind of preparation method of the catalyst of catalytic degradation chlorine residue, which comprises the following steps:
1) sodium silicate solution that suitable mass percent is 10~35% is added into reactor；
2) prepare aluminium manganese solution: by molar concentration rate being 2~5:1 by aluminium salt and manganese salt, be configured to total concentration be 0.5~
The aluminium manganese solution of 1.0mol/L；
3) sodium silicate solution in reactor is heated to 40~80 DEG C under conditions of abundant oscillation, then added into reactor
Enter aluminium manganese solution, the molar concentration rate of sodium silicate solution and aluminium manganese solution is 1:20~30, is reacted, then uses molar concentration
The hydrochloric acid that sulfuric acid or molar concentration for 3.5~8.5mol/L are 4~9mol/L adjusts pH to 12.5~13.5, obtains silicic acid glue
Body fluid；
4) it is the abundant through the processed activated carbon particles of acidleach of silicic acid quality 0.5~3% that quality is added into siliceous colloid liquid
Stirring, obtains gel；It is that the active carbons of 10~20 mesh is cleaned with pure water that the processed activated carbon particles of acidleach, which are by partial size,
After surface powder and impurity, with volume is active carbon volume 2~5 times, molar concentration be 0.05~0.1mol/L dilute sulfuric acid
Or the dilute hydrochloric acid dipping of 0.1~0.2mol/L is made；
5) under abundant oscillating condition, the sulfuric acid acidified gel for being 3.5~8.5mol/L with molar concentration to pH is 6.5~7.5,
And enter molding oil bath reaction column granulating and forming, aging and cleaning through granulation disc, obtain silicon particle；
6) silicon particle is dipped in water, and is carried out with the calcium hydroxide solution tune pH to 9~10 that concentration is 0.1~0.5mol/L
Reaming and modification, cleaning, drying obtain catalyst.
2. the preparation method of the catalyst of catalytic degradation chlorine residue according to claim 1, which is characterized in that the aluminium manganese is molten
The molar concentration rate of aluminium salt and manganese salt is 3:1 in liquid.
3. the preparation method of the catalyst of catalytic degradation chlorine residue according to claim 1, which is characterized in that at the acidleach
The activated carbon particles managed are by partial size be 10~20 mesh active carbon clean surface powder and impurity with pure water after, be with volume
2 times of active carbon volume, the dilute sulfuric acid that molar concentration is 0.05~0.1mol/L dipping is made.
4. the preparation method of the catalyst of catalytic degradation chlorine residue according to claim 1, which is characterized in that the hydroxide
The molar concentration of calcium solution is 0.2mol/L.
5. the preparation method of the catalyst of catalytic degradation chlorine residue according to claim 1, which is characterized in that the aluminium salt is
Aluminum sulfate or aluminium chloride, the manganese salt are manganese sulfate or manganese chloride.
6. the preparation method of the catalyst of catalytic degradation chlorine residue according to claim 1, which is characterized in that the active carbon
Particle is coaly activated carbon particle or wood activated charcoal particle.
7. the preparation method of the catalyst of catalytic degradation chlorine residue according to claim 1, which is characterized in that catalysis obtained
Agent in water for dechlorinating.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156764A (en) * | 1976-06-24 | 1977-12-27 | Asahi Chem Ind Co Ltd | Decomposition of oxidizing agent |
| CN106082208A (en) * | 2016-07-25 | 2016-11-09 | 山西大学 | A kind of preparation method of the modified activated carbon being catalyzed deodorizing |
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2016
- 2016-11-29 CN CN201611068246.8A patent/CN106475091B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156764A (en) * | 1976-06-24 | 1977-12-27 | Asahi Chem Ind Co Ltd | Decomposition of oxidizing agent |
| CN106082208A (en) * | 2016-07-25 | 2016-11-09 | 山西大学 | A kind of preparation method of the modified activated carbon being catalyzed deodorizing |
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