CN106693983A - Method using waste ternary lithium battery cathode material to prepare methylbenzene degrading catalyst - Google Patents
Method using waste ternary lithium battery cathode material to prepare methylbenzene degrading catalyst Download PDFInfo
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- CN106693983A CN106693983A CN201611004174.0A CN201611004174A CN106693983A CN 106693983 A CN106693983 A CN 106693983A CN 201611004174 A CN201611004174 A CN 201611004174A CN 106693983 A CN106693983 A CN 106693983A
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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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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Abstract
The invention provides a method using waste ternary lithium battery cathode material to prepare a methylbenzene degrading catalyst. The method comprises the following steps of 1, completely discharging; 2, mechanically breaking a shell, and separating a cathode from an anode; 3, stripping and collecting the cathode active matter; 4, extracting by acid; 5, reacting; 6, catalyzing and degrading the methylbenzene; 7, classifying the evaluation standards of methylbenzene degrading into surface removal rate and actual mineralizing rate. The method has the advantage that the mineralizing selectivity of the catalyst is improved, so as to realize the high CO2 (carbon dioxide) conversion rate at low temperature.
Description
Technical field
Recycled the present invention relates to ternary anode material of lithium battery in a kind of waste lithium cell recycling and reuse field
A kind of method, in particular it relates to method for preparing degradation of toluene catalyst using waste and old ternary anode material of lithium battery.
Background technology
VOCs is classified as the total amount that implementation focus region is combined with key industry by country in " 13 " plan
Control targe.Traditional VOCs administering methods mainly have absorption process, absorption method, combustion method, bioanalysis, photocatalytic method and wait from
Daughter technology.Wherein absorption method, photocatalytic method and the VOCs Treatment process that heat catalytic oxidation method is representative have obtained considerable
Development, absorption method energy consumption is low, and removal efficiency is high, but adsorptive selectivity is poor, and desorption is difficult after saturation, easily causes secondary pollution, fits
Preferably as the adsorption treatment and terminal disposal means of micro tail gas；Photocatalysis technology with titanium dioxide semiconductor as representative, because
Area carbon during the limitation of its quantum efficiency, and its use, easy in inactivation, photocatalysis oxidation technique still needs to long-term mechanism point
Analysis and process modification；Catalysis burning waste gas treatment effeciency is high, no secondary pollution and is difficult adsorption saturation and inactivation, but used
Catalyst is generally noble metal or transition metal oxide, and because Precious Metals Resources are in short supply, financial cost is high, so, develop cheap
It is easy to get, the catalyst of high activity and high selectivity is imperative.
The accumulation learies of China's new-energy automobile are about at 40,000 tons within 2015, it is contemplated that to the year two thousand twenty will more than 120,000 tons,
The cycle-index of general dynamic lithium battery is at 1700 times, it means that need to change a collection of dynamic lithium battery per 3-5.Lithium-ion electric
The positive active material in pond is typically using slotting lithium compound, such as LiMn of spinel structure2O4, the LiMPO of olivine structural4(M
=Co, Ni, Mn, Fe etc.) or Li3M2(PO4)3(wherein M=V, Fe, Zr, Ti etc.), the LiMO of layer structure2(M=Co, Ni, Mn
Deng) and LiNi1-x-yCoxMnyO2, wherein LiNi1/3Co1/3Mn1/3O2With high power capacity, high-energy-density and good stability
Etc. characteristic, as current domestic main flow electrode material, but because Co values are far above Mn, Ni elements, current lithium ion battery
Manufacturer is more likely to carry high Mn content with reduces cost, therefore brings the quagmire of recovery end enterprise：High-valency metal Co is reduced year by year,
Dangerous waste landfill cost is improved year by year, hard to carry on if the technique of manganese is abandoned as carried cobalt with conventional three-way lithium battery, therefore research and utilization
Mn elements prepare the important outlet that high-value product is lithium ion battery treatment disposal in ternary battery.
This research is with waste and old ternary anode material of lithium battery (LiNi1/5Co1/10Mn7/10O2) it is raw material, heated concussion stripping
From, acidleach, the step such as ammonium persulfate oxidation prepares δ-MnO2Catalyst, after sign contrast is carried out to it, further studies it
To the catalytic degradation effect and mineralization rate of typical VOCs- toluene.
The content of the invention
For defect of the prior art, waste and old ternary anode material of lithium battery is utilized it is an object of the invention to provide one kind
The method for preparing degradation of toluene catalyst, it is directed to existing ternary lithium ion battery preparation technology reduction high value cobalt element and contains
Amount, improves the present situation of low recovery value manganese element content.
According to an aspect of the present invention, there is provided 1, a kind of prepare degradation of toluene using waste and old ternary anode material of lithium battery
The method of catalyst, it is characterised in that comprise the following steps：
Step one, discharges completely, in waste and old ternary lithium ion battery still can remaining a part of electricity, it is right to be needed before disassembling
Battery concentrate complete discharge process, this programme selection salt tank discharge, will battery pack both positive and negative polarity be respectively connected to brine pit, put
Electric completely rear storing is stand-by；
Step 2, mechanical shell-breaking, both positive and negative polarity is separated：Carry out cutting on streamline to shell, both positive and negative polarity is separated, centralized collection
Positive plate；
Step 3, positive active material is peeled off and collected, by positive plate in heating furnace 350 DEG C of heating 20min, into broken
Screening machine, sieves aluminium foil, collects positive active material；
Step 4, acidleach, with the positive active material in the sulfuric acid dissolution step 3 of 1mol/L, is added dropwise in pickle liquor
The sodium peroxydisulfate solution of 0.5M；
Step 5, reaction stands, and with resulting solution pH in sodium carbonate regulating step four to 2, is placed in 80 DEG C of water-baths and stirs
After mixing 30min, constant temperature stands 3h, and filtering drying obtains Mn base catalyst；
Step 6, toluene catalytically degraded, configuration concentration is 1500mg/m3Toluene gas, after buffered bottle stabilization, with
It is 50mg standard δ-MnO that the flow velocity of 50ml/min enters loading2Or the temperature controllable fixed bed catalytic oxidation of Mn base catalyst is anti-
Device is answered, the inlet, outlet concentration before and after reaction is detected by the gas-chromatography of outfit fid detector, CO2Growing amount by being equipped with
The fid detector of methane reborner is analyzed；
Step 7, the evaluation criterion of degradation of toluene is divided into apparent clearance and actual mineralization rate.
Preferably, the step 3 uses carrier gas atmosphere, and carrier gas atmosphere is oxygen and the nitrogen mixing of oxygen content 10-50%
Gas or inert atmosphere.
Preferably, the step 3 uses 280-390 DEG C of sintering temperature, the roasting time of 10-30min.
Preferably, the evaluation criterion of the degradation of toluene uses following parameter：Flow velocity 50ml/min, toluene concentration
1500mg/m3；Catalyst is Mn base catalyst prepared by the waste and old ternary anode material of lithium battery of 50mg.
Preferably, it is characterised in that the evaluation criterion of the degradation of toluene uses following parameter：Reaction temperature is 75-350
DEG C, selective enumeration method gas is carbon dioxide or carbon monoxide.
Preferably, in the Mn bases catalyst content containing Mn in 60%-99%, Co contents of adulterating are in 1%-15%, Ni
Content is less than or equal to 2% in 1%-15%, Cu contents.
Preferably, main body crystal formation is δ-MnO2 in the Mn bases catalyst, and crystal diameter is in 30nm-400nm.
Preferably, it is characterised in that overall chemical formula is LiMnxCoyNi(1-x-y)O2。
Preferably, the Mn bases catalyst is by waste and old ternary lithium battery, or the positive electrode active materials disassembled or pickle liquor
It is prepared from.
Compared with prior art, the present invention has following beneficial effect：One, it is worth during discarded lithium ion is reclaimed into industry
Low, the Mn elements that landfill is often thrown aside as dangerous waste are prepared into the toluene waste gas degradation catalyst of high added value, to tackle ternary
Alternative metals Mn contents growing in lithium battery and the valuable metal Co contents for increasingly reducing, turn waste into wealth, and comply with technology
Trend and industry trend；Two, by controlling reaction condition and being co-deposited temperature, can be inserted in Mn base catalyst appropriate
Co, Ni element, improve the mineralising selectivity of catalyst, to realize the CO high of toluene at low temperatures2Conversion ratio.
Brief description of the drawings
The detailed description made to non-limiting example with reference to the following drawings by reading, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 (a) to Fig. 1 (f) is Mn bases catalyst (a, b, c) and δ-MnO2The SEM comparison diagrams of (d, e, f)；
Fig. 2 (a) and Fig. 2 (b) is Mn bases catalyst and δ-MnO2Specific surface area and pore-size distribution schematic diagram；
Fig. 3 is Mn bases catalyst and δ-MnO2XRD comparison diagrams；
Fig. 4 is Mn bases catalyst and δ-MnO2TPR comparison diagrams；
Fig. 5 is Mn bases catalyst and δ-MnO2To the Study on degradation of toluene：Fig. 5 (a) is toluene removal efficiency；Fig. 5 (b) is
Toluene mineralising efficiency.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
The present invention is applied to waste and old ternary lithium ion battery, especially high Mn content ternary battery.
The present invention is comprised the following steps：
Step one, discharges completely, in waste and old ternary lithium ion battery still can remaining a part of electricity, it is right to be needed before disassembling
Battery concentrate complete discharge process, this programme selection salt tank discharge, will battery pack both positive and negative polarity be respectively connected to brine pit, put
Electric completely rear storing is stand-by.
Step 2, mechanical shell-breaking, both positive and negative polarity is separated：Carry out cutting on streamline to shell, both positive and negative polarity is separated, centralized collection
Positive plate.
Step 3, positive active material is peeled off and collected, by positive plate in heating furnace 350 DEG C of heating 20min, into broken
Screening machine, sieves aluminium foil, collects positive active material.
Step 4, acidleach：With the positive active material in the sulfuric acid dissolution step 3 of 1mol/L, it is added dropwise in pickle liquor
Sodium peroxydisulfate (0.1mol/L) solution of 0.5M.
Step 5, reaction stands, and with resulting solution pH in sodium carbonate regulating step four to 2, is placed in 80 DEG C of water-baths and stirs
After mixing 30min, constant temperature stands 3h, and filtering drying obtains Mn base catalyst.
Step 6, toluene catalytically degraded, configuration concentration is 1500mg/m3Toluene gas, after buffered bottle stabilization, with
It is 50mg standard δ-MnO that the flow velocity of 50ml/min enters loading2Or the temperature controllable fixed bed catalytic oxidation of Mn base catalyst is anti-
Device is answered, the inlet, outlet concentration before and after reaction is detected (Shimadzu GC-2010) by the gas-chromatography of outfit fid detector, CO2
Growing amount be analyzed by the fid detector (Shimadzu GC-14B) of outfit methane reborner.
Step 7, the evaluation criterion of degradation of toluene is divided into apparent clearance and actual mineralization rate.Apparent clearance is by η tables
Show, formula (1) is shown in its definition：
C in formula (1)0Represent the concentration of toluene in air inlet and outlet respectively with C.
Use CO2Selectivity (The selectivity to CO2) representing mineralization rate, definition is shown in formula (2)：
In formula (2)Represent CO2Selectivity, [CO2] it is CO in outlet2Concentration (ppm), [CT] is oxidized
Carbon atom concentration (ppm).
Embodiment 1, processes toluene waste gas
Discharge completely, mechanical shell-breaking, both positive and negative polarity is separated, positive active material is peeled off and collected, with the vitriol lixiviation of 1mol/L
Sodium peroxydisulfate (0.1mol/L) solution of 0.5M is added dropwise in pickle liquor, with sodium carbonate regulating solution pH to 2,80 DEG C of water-baths is placed in
After stirring 30min in pot, constant temperature stands 3h, and filtering drying obtains Mn base catalyst.Toluene concentration 1500mg/m3, flow velocity 50ml/
min.Catalyst is respectively the Mn bases catalyst of the waste and old ternary anode material of lithium battery preparations of 50mg and utilizes AR
δ-the MnO of synthesis2Catalyst.
Be can be seen that by Fig. 5 (a)：Effective catalytic temperature of prepared Mn bases catalyst is than δ-MnO2Delay 50 DEG C, but because
The doping of its specific surface area higher (Fig. 2) and Co, Ni metal, its CO2Mineralising is selectively better than δ-MnO2, especially in low-temperature zone
Advantage extremely substantially { Fig. 5 (b) }.
Embodiment 2, Mn base catalyst is directly prepared by positive electrode active materials
The positive active material that enterprise directly fetches is disassembled from lithium battery, Co, Ni, Mn batch content is different, uses 1mol/L
Sulfuric acid dissolution positive active material, in pickle liquor be added dropwise 0.5M sodium peroxydisulfate (0.1mol/L) solution.Adjusted with sodium carbonate
Section pH value of solution is placed in after stirring 30min in 80 DEG C of water-baths to 2, and constant temperature stands 3h, and filtering drying obtains Mn base catalyst.
Configuration concentration is 1500mg/m3Toluene gas, after buffered bottle stabilization, filling is entered with the flow velocity of 50ml/min
It is 50mg standard δ-MnO to measure2Or the temperature controllable fixed bed catalytic oxidation reactor of Mn base catalyst, the inlet, outlet before and after reaction
Concentration detected (Shimadzu GC-2010) by the gas-chromatography of outfit fid detector, CO2Growing amount converted by outfit methane
The fid detector (Shimadzu GC-14B) of stove is analyzed.
Obtained Mn bases catalyst Mn contents in 75-99%, Co contents in 0.5-13%, mineralising CO at 200 DEG C2Selectivity
In 75-82%, still higher than pure δ-MnO2Catalyst.
Embodiment 3, Mn base catalyst is directly prepared by pickle liquor
The pickle liquor that enterprise directly fetches is disassembled from lithium battery, FEOL discharges for saline immersion, alkali soluble removes aluminium, acid is molten
After obtain pickle liquor, in pickle liquor be added dropwise 0.5M sodium peroxydisulfate (0.1mol/L) solution.With sodium carbonate regulating solution pH extremely
2, it is placed in after stirring 30min in 80 DEG C of water-baths, constant temperature stands 3h, and filtering drying obtains Mn base catalyst.
Configuration concentration is 1500mg/m3Toluene gas, after buffered bottle stabilization, filling is entered with the flow velocity of 50ml/min
It is 50mg standard δ-MnO to measure2Or the temperature controllable fixed bed catalytic oxidation reactor of Mn base catalyst, the inlet, outlet before and after reaction
Concentration detected (Shimadzu GC-2010) by the gas-chromatography of outfit fid detector, CO2Growing amount converted by outfit methane
The fid detector (Shimadzu GC-14B) of stove is analyzed.
Obtained Mn bases catalyst Mn contents in 81%, Co contents 7.51%, mineralising CO at 200 DEG C2Selectivity exists
64%, higher than pure δ-MnO2Catalyst.
Embodiment 4, regulation pH prepares different Mn, the Mn base catalyst of Co, Ni content.
Discharge completely, mechanical shell-breaking, both positive and negative polarity is separated, positive active material is peeled off and collected, with the vitriol lixiviation of 1mol/L
Sodium peroxydisulfate (0.1mol/L) solution of 0.5M is added dropwise in pickle liquor, with sodium carbonate regulating solution pH to 4,80 DEG C of water-baths is placed in
After stirring 30min in pot, constant temperature stands 3h, and filtering drying obtains Mn base catalyst.Toluene concentration 1500mg/m3, flow velocity 50ml/
min.Catalyst is respectively the Mn bases catalyst of the waste and old ternary anode material of lithium battery preparations of 50mg and utilizes AR
δ-the MnO of synthesis2Catalyst.
Obtained Mn bases catalyst Mn contents in 93%, Co contents 1.25%, mineralising CO at 200 DEG C2Selectivity exists
81%, higher than pure δ-MnO2Catalyst.
Above-described embodiment result is illustrated, proposed by the present invention to be prepared using waste and old ternary anode active material of lithium ion battery
The method of high selectivity degradation of toluene catalyst is not only technically feasible, and due to Co, the doping of Ni elements turns during degraded
Turn to CO2Ratio it is higher, reduce secondary pollution, value-added content of product is improve, simultaneously because the operability of technique and transferring
Connecing property is strong, can arbitrarily be connected to before lithium battery disassembles, and each stage is waited after positive electrode material is peeled off and after acidleach, is that one kind is non-
Chang Shiyong and to the less process route of original technogenic influence.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow
Sound substance of the invention.
Claims (9)
1. the method that a kind of waste and old ternary anode material of lithium battery of utilization prepares degradation of toluene catalyst, it is characterised in that including
Following steps：
Step one, discharges completely, in waste and old ternary lithium ion battery still can remaining a part of electricity, needed to battery before disassembling
Concentrate complete discharge process, this programme selection salt tank discharge, will battery pack both positive and negative polarity be respectively connected to brine pit, discharged
Put after complete stand-by；
Step 2, mechanical shell-breaking, both positive and negative polarity is separated：Carry out cutting on streamline to shell, both positive and negative polarity is separated, centralized collection positive pole
Piece；
Step 3, positive active material is peeled off and collected, and positive plate is heated into 20min 350 DEG C in heating furnace, into crushing and screening
Machine, sieves aluminium foil, collects positive active material；
Step 4, acidleach, with the positive active material in the sulfuric acid dissolution step 3 of 1mol/L, is added dropwise 0.5M's in pickle liquor
Sodium peroxydisulfate solution；
Step 5, reaction stands, and with resulting solution pH in sodium carbonate regulating step four to 2, is placed in 80 DEG C of water-baths and stirs
After 30min, constant temperature stands 3h, and filtering drying obtains Mn base catalyst；
Step 6, toluene catalytically degraded, configuration concentration is 1500mg/m3Toluene gas, after buffered bottle stabilization, with 50ml/
It is 50mg standard δ-MnO that the flow velocity of min enters loading2Or the temperature controllable fixed bed catalytic oxidation reactor of Mn base catalyst,
Reaction before and after inlet, outlet concentration detected by the gas-chromatography of outfit fid detector, CO2Growing amount by outfit methane
The fid detector of reburner is analyzed；
Step 7, the evaluation criterion of degradation of toluene is divided into apparent clearance and actual mineralization rate.
2. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, the step 3 use carrier gas atmosphere, carrier gas atmosphere for oxygen content 10-50% oxygen and nitrogen mixture or
Inert atmosphere.
3. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, sintering temperature of the step 3 using 280-390 DEG C, the roasting time of 10-30min.
4. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, the evaluation criterion of the degradation of toluene uses following parameter：Flow velocity 50ml/min, toluene concentration 1500mg/m3；
Catalyst is Mn base catalyst prepared by the waste and old ternary anode material of lithium battery of 50mg.
5. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, the evaluation criterion of the degradation of toluene uses following parameter：Reaction temperature is 75-350 DEG C, selective enumeration method gas
Body is carbon dioxide or carbon monoxide.
6. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, in the Mn bases catalyst content containing Mn in 60%-99%, Co contents of adulterating are in 1%-15%, Ni contents
In 1%-15%, Cu contents are less than or equal to 2%.
7. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, main body crystal formation is δ-MnO2 in the Mn bases catalyst, crystal diameter is in 30nm-400nm.
8. according to the waste and old ternary lithium battery in claim 1, it is characterised in that overall chemical formula is LiMnxCoyNi(1-x-y)O2。
9. the method that the waste and old ternary anode material of lithium battery of utilization according to claim 1 prepares degradation of toluene catalyst,
Characterized in that, the Mn bases catalyst is by waste and old ternary lithium battery, or prepared by the positive electrode active materials disassembled or pickle liquor
Form.
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Cited By (6)
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|---|---|---|---|---|
| CN110548391A (en) * | 2019-07-17 | 2019-12-10 | 上海第二工业大学 | Catalytic oxidation system for treating benzene organic matters by manganese-based catalyst prepared based on waste ternary electrode material |
| CN110801844A (en) * | 2019-11-28 | 2020-02-18 | 江西理工大学 | Method for preparing demercuration catalyst by using waste anode material and application of demercuration catalyst |
| CN111905720A (en) * | 2020-08-17 | 2020-11-10 | 中国环境科学研究院 | Application of waste battery anode material in catalyst, catalyst and preparation method thereof |
| CN113546640A (en) * | 2021-07-13 | 2021-10-26 | 常州大学 | NiO-CoMn2O4Preparation method of catalyst and application of catalyst in catalytic oxidation degradation of toluene |
| CN113713828A (en) * | 2021-09-16 | 2021-11-30 | 中国科学院大学 | VOCs combustion catalyst prepared by recycling waste ternary lithium batteries and preparation method thereof |
| CN113842742A (en) * | 2021-10-22 | 2021-12-28 | 衢州华友钴新材料有限公司 | Method for ex-situ absorption of carbon heat lithium extraction waste gas of waste lithium batteries |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110548391A (en) * | 2019-07-17 | 2019-12-10 | 上海第二工业大学 | Catalytic oxidation system for treating benzene organic matters by manganese-based catalyst prepared based on waste ternary electrode material |
| CN110801844A (en) * | 2019-11-28 | 2020-02-18 | 江西理工大学 | Method for preparing demercuration catalyst by using waste anode material and application of demercuration catalyst |
| CN110801844B (en) * | 2019-11-28 | 2022-06-07 | 江西理工大学 | Method for preparing demercuration catalyst by using waste anode material and application of demercuration catalyst |
| CN111905720A (en) * | 2020-08-17 | 2020-11-10 | 中国环境科学研究院 | Application of waste battery anode material in catalyst, catalyst and preparation method thereof |
| CN113546640A (en) * | 2021-07-13 | 2021-10-26 | 常州大学 | NiO-CoMn2O4Preparation method of catalyst and application of catalyst in catalytic oxidation degradation of toluene |
| CN113546640B (en) * | 2021-07-13 | 2023-10-20 | 常州大学 | NiO-CoMn 2 O 4 Preparation method of catalyst and application of catalyst in catalytic oxidative degradation of toluene |
| CN113713828A (en) * | 2021-09-16 | 2021-11-30 | 中国科学院大学 | VOCs combustion catalyst prepared by recycling waste ternary lithium batteries and preparation method thereof |
| CN113713828B (en) * | 2021-09-16 | 2023-08-08 | 中国科学院大学 | VOCs combustion catalyst prepared by recycling waste ternary lithium batteries and preparation method thereof |
| CN113842742A (en) * | 2021-10-22 | 2021-12-28 | 衢州华友钴新材料有限公司 | Method for ex-situ absorption of carbon heat lithium extraction waste gas of waste lithium batteries |
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Application publication date: 20170524 |