CN106676677A - Method for preparing hollow carbon fiber from biomass material - Google Patents

Method for preparing hollow carbon fiber from biomass material Download PDF

Info

Publication number
CN106676677A
CN106676677A CN201710065135.XA CN201710065135A CN106676677A CN 106676677 A CN106676677 A CN 106676677A CN 201710065135 A CN201710065135 A CN 201710065135A CN 106676677 A CN106676677 A CN 106676677A
Authority
CN
China
Prior art keywords
carbon fiber
hollow carbon
deionized water
biological
solution
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.)
Pending
Application number
CN201710065135.XA
Other languages
Chinese (zh)
Inventor
罗永松
罗荣杰
曾凡梅
彭涛
陆阳
于秋红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinyang Normal University
Original Assignee
Xinyang Normal University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xinyang Normal University filed Critical Xinyang Normal University
Priority to CN201710065135.XA priority Critical patent/CN106676677A/en
Publication of CN106676677A publication Critical patent/CN106676677A/en
Pending legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/16Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate

Abstract

The invention discloses a method for preparing a hollow carbon fiber from a biomass material. The method comprises the following steps: (1) weighing a certain amount of potassium hydroxide, adding into deionized water, and sufficiently stirring until completely dissolving to obtain a solution; (2) adding palm fibers into the solution, putting into a reaction kettle, and performing hydrothermal treatment; (3) after the hydrothermal treatment is completed, taking out the solution, cooling, then pouring the supernatant liquid to leave the product, cleaning the product with deionized water, and performing ultrasonic treatment; (4) transferring the cleaned product into a carbonization furnace, performing heating carbonization treatment in an inert gas protective atmosphere, and then naturally cooling to room temperature; and (5) taking out the carbonized product, treating with an alkaline solution to remove impurities in the material, cleaning with deionized water, then putting into a drying oven, and drying to obtain the hollow carbon fiber. According to the invention, the carbon fiber having a hollow structure can be prepared at high yield; the preparation process is simple, easy to operate and low in cost; and a hollow carbon fiber sample prepared by the preparation method is uniform in size and high in crystallinity.

Description

A kind of method that biological material prepares hollow carbon fiber
Technical field
The invention belongs to technical field of carbon fiber preparation, specifically a kind of biological material prepares the side of hollow carbon fiber Method.
Background technology
Carbon fiber is fibrous carbon materials, containing substantial amounts of carbon.It is high in noble gases using organic fiber Temperature is carbonized and obtains.Carbon fiber has multiple beneficial performance, such as low-density, good mechanical property, absorption property.Carbon fiber The every field in military and civilian industry obtains extensive application.Therefore the concern of various countries researcher is caused.However, carbon The carbon fiber that fiber product is mainly prepared by petrochemical materials is processed, complex process, cost intensive, and fossil energy Source increasingly depleted.
The content of the invention
Goal of the invention:In order to overcome the deficiencies in the prior art, the present invention to provide in a kind of biological material preparation The method of empty carbon fiber.
Technical scheme:To solve above-mentioned technical problem, a kind of biological material of the present invention prepares the side of hollow carbon fiber Method, comprises the following steps:(1) weigh a certain amount of potassium hydroxide, add to be stirred well to be completely dissolved in deionized water and obtain Solution;(2) after Petiolus Trachycarpi silk is added in the solution of step (1), being put in reactor carries out hydrothermal treatment consists;(3) hydrothermal treatment consists are complete Take out after finishing and solution and cool down, supernatant liquid is poured out after cooling and product is left, deionized water wash products and supersound process; (4) product obtained after cleaning is proceeded in retort, carbonization treatment is heated under inert gas shielding, natural cooling after carbonization To room temperature;(5) product of carbonization treatment is taken out, impurity in material is removed using alkaline solution process, after deionized water cleaning Insert oven for drying (being originally used for baking), you can obtain hollow carbon fiber.
Wherein, deionized water and potassium hydroxide, the mass percent of Petiolus Trachycarpi silk are 76~80:17.5~21:2.5~3.5.
Wherein, the temperature of reactor is set as 160 DEG C -180 DEG C, and hydrothermal conditions are 8-10h.
Wherein, the product obtained after cleaning is proceeded in retort and is uniformly added with 1 DEG C/min programming rates under noble gases Heat is to 700-1000 DEG C of carbonization treatment, carbonization treatment 2-5h.
Wherein, insert 60 DEG C of baking oven after deionized water cleaning and be dried 12h.
Wherein, sonication treatment time is 5min.
Wherein, the alkaline solution in step (5) is 3M NaOH solutions.
Beneficial effect:The method that a kind of biological material of the present invention prepares hollow carbon fiber, has the advantages that:
1) present invention is obtained in that the carbon fiber with hollow structure of high yield;
2) preparation process is simple, easily operated, low cost of the invention;
3) present invention need not prepare hollow carbon fiber using petrochemical industry material;
4) hollow carbon fiber sample size is uniform obtained in preparation method of the invention, and degree of crystallinity is high, good conductivity.
Description of the drawings
Fig. 1 is the XRD spectrum of hollow carbon fiber obtained in the embodiment of the present invention 1;
Fig. 2 is the Raman picture of raw material Petiolus Trachycarpi silk obtained in the embodiment of the present invention 1;
Fig. 3 a are the low power SEM picture of the raw material Petiolus Trachycarpi silk in the present invention;
Fig. 3 b are times SEM pictures in Petiolus Trachycarpi silk in the present invention after hydrothermal treatment consists;
Fig. 3 c are the Petiolus Trachycarpi silk high power SEM picture in the present invention after hydrothermal treatment consists;
Fig. 4 a are the SEM pictures of hollow carbon fiber prepared by the present invention;
Fig. 4 b are the SEM pictures of hollow carbon fiber prepared by the present invention;
Fig. 5 is the Raman picture of raw material Petiolus Trachycarpi silk obtained in the embodiment of the present invention 4;
Fig. 6 is the Raman picture of raw material Petiolus Trachycarpi silk obtained in the embodiment of the present invention 5.
Specific embodiment
The present invention is further described with reference to embodiment.
Embodiment 1
Mesoporous carbon fiber is prepared using simple hydro-thermal reaction using wood material in the present embodiment.Preparation method:First measure 60ml deionized waters are taken, then weighs potassium hydroxide 16g, be stirred well to and be completely dissolved, it is then again that Petiolus Trachycarpi silk 2g additions is above-mentioned Solution, in being subsequently adding the reactor of 100ml.Proceeding to 160 degree of baking oven carries out hydrothermal treatment consists 8h, and upper liquid is poured out after cooling, uses Deionized water wash products and supersound process.Hydrothermal product is proceeded in retort under noble gases with 1 DEG C/min programming rates It is uniformly heated to 700 DEG C.Room temperature is naturally cooled to after carbonization 2h.Product is taken out, is removed in material using the process of 3M NaOH solutions Impurity.The night of baking oven one is inserted after deionized water cleaning, you can obtain hollow carbon fiber.
The XRD spectrum of the hollow carbon fiber that the present embodiment is prepared is as shown in Figure 1, it is seen that the mesoporous carbon for preparing is fine The degree of crystallinity of dimension is very high, without dephasign.The Raman figure of hollow carbon fiber is as shown in Fig. 2 the hollow carbon after high-temperature process is fine G peaks and D peaks are occurred in that in dimension Raman spectrum.The SEM figures of product after raw material and hydrothermal treatment consists, as shown in figure 3, product after hydro-thermal In threadiness and be interweaved together.Shown in SEM Fig. 4 of hollow carbon fiber, wherein comprising two width figures, respectively making The SEM pictures of the standby hollow carbon fiber different piece for obtaining, it can be seen that the diameter of prepared hollow carbon fiber exists Between 1-5 μm, in Fig. 4 (b), hence it is evident that see tubular structure.
Embodiment 2
Mesoporous carbon fiber is prepared using simple hydro-thermal reaction using wood material in the present embodiment.Preparation method:First measure 80ml deionized waters are taken, then weighs potassium hydroxide 18g, be stirred well to and be completely dissolved, it is then again that Petiolus Trachycarpi silk 3g additions is above-mentioned Solution, in being subsequently adding the reactor of 100ml.Proceeding to 160 DEG C of baking oven carries out hydrothermal treatment consists 10h, and upper liquid is poured out after cooling, uses Deionized water wash products and supersound process.Hydrothermal product is proceeded in retort under noble gases with 1 DEG C/min programming rates It is uniformly heated to 1000 DEG C.Room temperature is naturally cooled to after carbonization 2h.Product is taken out, is removed using 3M NaOH process miscellaneous in material Matter.The night of baking oven one is inserted after deionized water cleaning, you can obtain hollow carbon fiber.
The XRD spectrum of the hollow carbon fiber that embodiment is prepared is as shown in Figure 1, it is seen that the mesoporous carbon for preparing is fine The degree of crystallinity of dimension is very high, without dephasign.The Raman figure of hollow carbon fiber is as shown in figure 5, the hollow carbon after high-temperature process is fine G peaks and D peaks are occurred in that in dimension Raman spectrum.The SEM figures of product after raw material and hydrothermal treatment consists, as shown in figure 3, product after hydro-thermal In threadiness and be interweaved together.Shown in SEM Fig. 4 of hollow carbon fiber, wherein comprising two width figures, respectively making The SEM pictures of the standby hollow carbon fiber different piece for obtaining, it can be seen that the diameter of prepared hollow carbon fiber exists Between 1-5 μm, in Fig. 4 (b), hence it is evident that see tubular structure.
Embodiment 3
Mesoporous carbon fiber is prepared using simple hydro-thermal reaction using wood material in the present embodiment.Preparation method:First measure 80ml deionized waters are taken, then weighs potassium hydroxide 18g, be stirred well to and be completely dissolved, it is then again that Petiolus Trachycarpi silk 3g additions is above-mentioned Solution, in being subsequently adding the reactor of 100ml.Proceeding to 180 DEG C of baking oven carries out hydrothermal treatment consists 8h, and upper liquid is poured out after cooling, uses Deionized water wash products and supersound process.Hydrothermal product is proceeded in retort under noble gases with 1 DEG C/min programming rates It is uniformly heated to 700 DEG C.Room temperature is naturally cooled to after carbonization 5h.Product is taken out, is removed using 3M NaOH process miscellaneous in material Matter.The night of baking oven one is inserted after deionized water cleaning, you can obtain hollow carbon fiber.
The XRD spectrum of the hollow carbon fiber that embodiment is prepared is as shown in Figure 1, it is seen that the mesoporous carbon for preparing is fine The degree of crystallinity of dimension is very high, without dephasign.The Raman figure of hollow carbon fiber is as shown in Fig. 2 the hollow carbon after high-temperature process is fine G peaks and D peaks are occurred in that in dimension Raman spectrum.The SEM figures of product after raw material and hydrothermal treatment consists, as shown in figure 3, product after hydro-thermal In threadiness and be interweaved together.Shown in SEM Fig. 4 of hollow carbon fiber, wherein comprising two width figures, respectively making The SEM pictures of the standby hollow carbon fiber different piece for obtaining, it can be seen that the diameter of prepared hollow carbon fiber exists Between 1-5 μm, in Fig. 4 (b), hence it is evident that see tubular structure.
Embodiment 4
Mesoporous carbon fiber is prepared using simple hydro-thermal reaction using wood material in the present embodiment.Preparation method:First measure 80ml deionized waters are taken, then weighs potassium hydroxide 18g, be stirred well to and be completely dissolved, it is then again that Petiolus Trachycarpi silk 3g additions is above-mentioned Solution, in being subsequently adding the reactor of 100ml.Proceeding to 180 DEG C of baking oven carries out hydrothermal treatment consists 10h, and upper liquid is poured out after cooling, uses Deionized water wash products and supersound process.Hydrothermal product is proceeded in retort under noble gases with 1 DEG C/min programming rates It is uniformly heated to 1000 DEG C.Room temperature is naturally cooled to after carbonization 5h.Product is taken out, is removed using 3M NaOH process miscellaneous in material Matter.The night of baking oven one is inserted after deionized water cleaning, you can obtain hollow carbon fiber.
The XRD spectrum of the hollow carbon fiber that embodiment is prepared is as shown in Figure 1, it is seen that the mesoporous carbon for preparing is fine The degree of crystallinity of dimension is very high, without dephasign.The Raman figure of hollow carbon fiber is as shown in figure 5, the hollow carbon after high-temperature process is fine G peaks and D peaks are occurred in that in dimension Raman spectrum.The SEM figures of product after raw material and hydrothermal treatment consists, as shown in figure 3, product after hydro-thermal In threadiness and be interweaved together.Shown in SEM Fig. 4 of hollow carbon fiber, wherein comprising two width figures, respectively making The SEM pictures of the standby hollow carbon fiber different piece for obtaining, it can be seen that the diameter of prepared hollow carbon fiber exists Between 1-5 μm, in Fig. 4 (b), hence it is evident that see tubular structure.
Embodiment 5
Mesoporous carbon fiber is prepared using simple hydro-thermal reaction using wood material in the present embodiment.Preparation method:First measure 70ml deionized waters are taken, then weighs potassium hydroxide 17g, be stirred well to and be completely dissolved, it is then again that Petiolus Trachycarpi silk 3g additions is above-mentioned Solution, in being subsequently adding the reactor of 100ml.Proceeding to 170 DEG C of baking oven carries out hydrothermal treatment consists 9h, and upper liquid is poured out after cooling, uses Deionized water wash products and supersound process.Hydrothermal product is proceeded in retort under noble gases with 1 DEG C/min programming rates It is uniformly heated to 1000 DEG C.Room temperature is naturally cooled to after carbonization 5h.Product is taken out, is removed using 3M NaOH process miscellaneous in material Matter.The night of baking oven one is inserted after deionized water cleaning, you can obtain hollow carbon fiber.
The XRD spectrum of the hollow carbon fiber that embodiment is prepared is as shown in Figure 1, it is seen that the mesoporous carbon for preparing is fine The degree of crystallinity of dimension is very high, without dephasign.The Raman figure of hollow carbon fiber is as shown in fig. 6, the hollow carbon after high-temperature process is fine G peaks and D peaks are occurred in that in dimension Raman spectrum.The SEM figures of product after raw material and hydrothermal treatment consists, as shown in figure 3, product after hydro-thermal In threadiness and be interweaved together.Shown in SEM Fig. 4 of hollow carbon fiber, wherein comprising two width figures, respectively making The SEM pictures of the standby hollow carbon fiber different piece for obtaining, it can be seen that the diameter of prepared hollow carbon fiber exists Between 1-5 μm, in Fig. 4 (b), hence it is evident that see tubular structure.
The above is only the preferred embodiment of the present invention, it should be pointed out that:For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (7)

1. a kind of method that biological material prepares hollow carbon fiber, it is characterised in that comprise the following steps:(1) weigh certain The potassium hydroxide of amount, adds and is stirred well to be completely dissolved and obtains solution in deionized water;(2) Petiolus Trachycarpi silk is added into step (1) Solution in after, being put in reactor carries out hydrothermal treatment consists;(3) solution is taken out after hydrothermal treatment consists are finished and is cooled down, fallen after cooling Go out supernatant liquid and leave product, deionized water wash products and supersound process;(4) product obtained after cleaning is proceeded to into charcoal In changing stove, carbonization treatment is heated under inert gas shielding, room temperature is naturally cooled to after carbonization;(5) product of carbonization treatment is taken out Thing, removes impurity in material, after baking oven baking is inserted after deionized water cleaning, you can obtain hollow using alkaline solution process Carbon fiber.
2. the method that a kind of biological material according to claim 1 prepares hollow carbon fiber, it is characterised in that:Wherein, Deionized water and potassium hydroxide, the mass percent of Petiolus Trachycarpi silk are 76~80:17.5~21:2.5~3.5.
3. the method that a kind of biological material according to claim 1 prepares hollow carbon fiber, it is characterised in that:Wherein, The temperature of reactor is set as 160 DEG C -180 DEG C, and hydrothermal conditions are 8-10h.
4. the method that a kind of biological material according to claim 1 prepares hollow carbon fiber, it is characterised in that:Wherein, The product obtained after cleaning is proceeded in retort and is uniformly heated to 700-1000 DEG C with 1 DEG C/min programming rates under noble gases Carbonization treatment, carbonization treatment 2-5h.
5. the method that a kind of biological material according to claim 1 prepares hollow carbon fiber, it is characterised in that:Wherein, Baking oven is inserted after deionized water cleaning be dried 12h at a temperature of 60 DEG C.
6. the method that a kind of biological material according to claim 1 prepares hollow carbon fiber, it is characterised in that:Wherein, Sonication treatment time is 5min.
7. the method that a kind of biological material according to claim 1 prepares hollow carbon fiber, it is characterised in that:Wherein, Alkaline solution in step (5) is 3M NaOH solutions.
CN201710065135.XA 2017-02-06 2017-02-06 Method for preparing hollow carbon fiber from biomass material Pending CN106676677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710065135.XA CN106676677A (en) 2017-02-06 2017-02-06 Method for preparing hollow carbon fiber from biomass material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710065135.XA CN106676677A (en) 2017-02-06 2017-02-06 Method for preparing hollow carbon fiber from biomass material

Publications (1)

Publication Number Publication Date
CN106676677A true CN106676677A (en) 2017-05-17

Family

ID=58860318

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710065135.XA Pending CN106676677A (en) 2017-02-06 2017-02-06 Method for preparing hollow carbon fiber from biomass material

Country Status (1)

Country Link
CN (1) CN106676677A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107177905A (en) * 2017-06-26 2017-09-19 河南工程学院 A kind of carbon fiber prepared based on discarded bamboo chopsticks hydrothermal carbonization method and its application
CN109004199A (en) * 2018-08-01 2018-12-14 北京理工大学 A kind of preparation method of sodium-ion battery cathode biomass hard carbon material
CN109371505A (en) * 2018-09-27 2019-02-22 安徽工程大学 A kind of biomass-based screw carbon fibre and preparation method thereof
CN109759101A (en) * 2019-03-27 2019-05-17 合肥学院 A kind of method that wood fiber biomass prepares carbon carried heteropoly acid material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101245501A (en) * 2008-03-21 2008-08-20 山东大学 Method for producing windmill palm tegument activated carbon fiber with biological-chemical method
CN104692381A (en) * 2015-03-04 2015-06-10 河南工程学院 Preparation method of superhigh-specific-area activated carbon fibers
CN105060289A (en) * 2015-09-21 2015-11-18 中南大学 Method for preparing fewer-layer graphene on basis of biomass waste
CN105463628A (en) * 2016-02-03 2016-04-06 中国石油大学(华东) Preparation method of flexible porous carbon fiber
CN106025246A (en) * 2016-06-24 2016-10-12 双登集团股份有限公司 Preparation method for mesoporous active carbon fibers used for lead-carbon battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101245501A (en) * 2008-03-21 2008-08-20 山东大学 Method for producing windmill palm tegument activated carbon fiber with biological-chemical method
CN104692381A (en) * 2015-03-04 2015-06-10 河南工程学院 Preparation method of superhigh-specific-area activated carbon fibers
CN105060289A (en) * 2015-09-21 2015-11-18 中南大学 Method for preparing fewer-layer graphene on basis of biomass waste
CN105463628A (en) * 2016-02-03 2016-04-06 中国石油大学(华东) Preparation method of flexible porous carbon fiber
CN106025246A (en) * 2016-06-24 2016-10-12 双登集团股份有限公司 Preparation method for mesoporous active carbon fibers used for lead-carbon battery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李超 等: "棕榈基活性碳纤维的制备及孔结构表征", 《中国科技论文》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107177905A (en) * 2017-06-26 2017-09-19 河南工程学院 A kind of carbon fiber prepared based on discarded bamboo chopsticks hydrothermal carbonization method and its application
CN109004199A (en) * 2018-08-01 2018-12-14 北京理工大学 A kind of preparation method of sodium-ion battery cathode biomass hard carbon material
CN109371505A (en) * 2018-09-27 2019-02-22 安徽工程大学 A kind of biomass-based screw carbon fibre and preparation method thereof
CN109371505B (en) * 2018-09-27 2021-03-02 安徽工程大学 Biomass-based spiral carbon fiber and preparation method thereof
CN109759101A (en) * 2019-03-27 2019-05-17 合肥学院 A kind of method that wood fiber biomass prepares carbon carried heteropoly acid material

Similar Documents

Publication Publication Date Title
CN106676677A (en) Method for preparing hollow carbon fiber from biomass material
CN106348274A (en) Method for preparing graphene from agriculture and forestry waste biomass as carbon source
CN103539119B (en) Preparation method of activated carbon for electrochemical energy storage device
CN103359736B (en) A kind of method from crystalline silicon cutting waste mortar synthesis silicon carbide powder
CN104692368B (en) A kind of Graphene prepared as raw material with cellulose and preparation method thereof
CN103539118B (en) A kind of method for preparation of active carbon for ultracapacitor
CN104402017B (en) A kind of method of synthetic zeolite from flyash
CN105329892A (en) Method for producing capacitive carbon from rice husks
CN102515156B (en) Simple method for synchronous preparation of water glass and activated carbon with rice husk pyrolyzed ash
CN103771403B (en) A method of preparing multi-layer graphene with lignite slag
CN103496700A (en) Method for preparing active carbon from pyrolysis residues of cedarwood sawdust
CN101525135B (en) Method for inducing and synthesizing carborundum or carborundum nano tube by low-temperature auxiliary reaction
CN106185882A (en) A kind of method that in utilization, low-carbon (LC) Fine particle processing prepares low-sulphur expanded graphite
CN101746744A (en) Method for preparing lithium ion battery carbon cathode material
CN103539114B (en) Pretreatment preparation method of active carbon for supercapacitor
CN104692387B (en) A kind of method using silicon containing biomass as raw material low temperature preparation nanometer silicon carbide and preparation-obtained nanometer silicon carbide
CN106379889A (en) Method and device for preparing fluorinated graphene and high purity lithium fluoride as by-product
CN100551832C (en) A kind of preparation high temperature nuclear reactor fuel element UO 2The method of nuclear core
JP5779653B2 (en) Heated gas circulation type carbon material decomposition method and equipment
CN103334164A (en) Method and device for cleaning spinneret plate by near-critical hydrolyzing
CN103627414B (en) Based on the waste salt comprehensive treatment device of high-temperature heat pipe
CN104230650B (en) A kind of light chlorination process prepares the technique of methyl chloride
CN109796014A (en) It is a kind of using ferric nitrate as the preparation method of the mesoporous activated carbon of activator
CN109524736A (en) The recovery method and application thereof of graphite in old and useless battery
US10611644B2 (en) Equipment and process for preparing silicon oxides

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170517

RJ01 Rejection of invention patent application after publication