CN106495135A - The method that Graphene is prepared by straw, forest or its side-product - Google Patents
The method that Graphene is prepared by straw, forest or its side-product Download PDFInfo
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- CN106495135A CN106495135A CN201610852056.9A CN201610852056A CN106495135A CN 106495135 A CN106495135 A CN 106495135A CN 201610852056 A CN201610852056 A CN 201610852056A CN 106495135 A CN106495135 A CN 106495135A
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Abstract
The invention discloses a kind of method for preparing Graphene by straw, forest or its side-product, belongs to straw, forest technical field of comprehensive utilization.The present invention is extracted from Plant fiber first and purification is started with, and has obtained highly purified Plant fiber；On this basis, the Graphene finished product of high-quality, by techniques such as gas making, carbonizations, has been obtained.Equipment is simple, technical maturity, easy to spread and implement.When extracting with PPF, using special protease and amylase, protein and starch is eliminated at normal temperatures；Normal temperature condition avoids the change of Plant fiber's molecular radical well, farthest maintains the complete state of Plant fiber.In addition, when Plant fiber extracts, using room temperature and the environment under high pressure of noble gases offer；High pressure ensure that and break through cell wall in steam explosion extraction process, efficiently prepares Plant fiber；Room temperature and inert environments avoid the change of Plant fiber's molecular radical, farthest maintain the complete state of Plant fiber.
Description
Technical field
The present invention relates to straw, forest technical field of comprehensive utilization, more particularly to one kind is by straw, forest or its side-product
The method for preparing Graphene.
Background technology
Graphene（Graphene）It is the only one layer of atomic thickness for being stripped out from graphite material, being made up of carbon atom
Two dimensional crystal.As the thickness that has now been found that is most thin, the most strong a kind of novel nano material of maximum intensity, electrical and thermal conductivity performance
Material, Graphene are referred to as " king of new material ".Preferably graphene-structured is plane hexagonal lattice, can be regarded as one layer of quilt
The graphitic molecules of stripping, each carbon atom are sp2Hydridization, and contribute the big π keys that electronically form on a remaining p track, π electricity
Son can be moved freely, and give Graphene good electric conductivity.The synthetic method of Graphene mainly has two kinds at present：Mechanical means
And chemical method.The method that mechanical means include micromechanics partition method, epitaxy method and heating SiC；Chemical method is chemistry
Reducing process and chemical dissociation method.Main raw material(s) is non-renewable graphite ore.
Straw, forest or its side-product are mainly made up of cellulose, hemicellulose, lignin etc., and its total quality is plant
The 80 95% of thing butt quality, are the main sources of Plant fiber.Cellulose, lignin in Plant fiber is nature
Middle content occupy first, organic carbon resource of deputy natural reproducible, is the main composition composition of plant cell wall.According to
Determine, in Plant fiber, the mass fraction of carbon atom is 60% or so.Thus Plant fiber will likely become and prepare Graphene the most
Important raw material.
Prior art not yet finds the direct side for preparing Graphene using straw, forest or its side-product of simple possible
Method.
Content of the invention
In order to make up the deficiencies in the prior art, the invention provides one kind prepares graphite by straw, forest or its side-product
The method of alkene.
The technical scheme is that：
A kind of method for preparing Graphene by straw, forest or its side-product, including step：
The extraction of A Plant fiber
A1）Straw, forest or its side-product are crushed after pretreatment, are placed in steam-explosion jar, in the steam-explosion jar are passed through inertia
Gas will be sealed after air emptying in tank；It is 1-5 MPa to continue to be passed through noble gases to pressure, sprays after pressurize 20-120 minutes
Put, obtain steam explosion powder；
A2）The steam explosion powder is placed in steam-explosion jar, and adds the water of steam explosion 1-20 times of quality of powder, be passed through noble gases,
So that steam explosion powder is uniformly distributed, compound protease is subsequently adding, digests 10-80 minutes；Normal temperature type α-amylase is subsequently added,
Enzymolysis 10-80 minutes；Then pass to steam and be warming up to 60-75 DEG C, be incubated 2-20 minutes, the activity of inactivator；The compound egg
White enzyme is made up of the alkaline protease for possessing endopeptidase activity and the E.C. 3.4.21.64 for possessing peptide ending enzyme activity；Normal temperature type α-the shallow lake
Powder enzyme is by microwave induced gained variation Bacillus licheniformis secretion gained α-amylase, the suitable temperature of the normal temperature type α-amylase
Spend for 22-35 DEG C；
A3）After enzyme denaturing, treat that temperature is down to room temperature in steam-explosion jar, it is 1-5 MPa, pressurize 60-200 point to be passed through noble gases to pressure
Spurt after clock；
A4）Step A3）Gained spurts slurry solid-liquid separation, obtains filtering residue and filtrate；Filtering residue wash with water after through drying, crush
Plant fiber；
B Plant fiber's gas making
By step A4）Gained Plant fiber is placed in Gas-making Furnace, and design temperature is 80-300 DEG C, time 2-24 hour；Plant fiber
Obtain, after Gas-making Furnace process, the Plant fiber's carbonaceous gas for including carbon monoxide, methane, propane；
C prepares Graphene by Plant fiber's carbonaceous gas
C1）Tinsel is set in reactor used as depositing base, the depositing base is covered with reactor, leads to into reactor
Enter noble gases, emptying air rear enclosed；
C2）Plant fiber carbonaceous gas of the step B gained comprising carbon monoxide, methane, propane is passed through reactor, then
It is passed through noble gases and is forced into 0.5-10 MPa, is warming up to 200-700 DEG C of carbonization 1-6 minute, is continuously heating to 1000-2000 DEG C
Carbonization 0.5-5 minutes；
C3）The gas in reactor is released, the thin film on the depositing base is Graphene.
Preferably, step A1）Described in pretreatment include remove impurity, rub silk, cutting, dry run；Step A1）In
The crushing is that straw, forest or its side-product are crushed to 30-50 mesh.30-50 mesh is crushed to, specific surface area is larger, is extracted
More abundant.
Preferably, step A1）In, the addition of straw, forest or its side-product reaches the 5%- of tank body volume
50%.The addition of material can not be excessive, and excessively steam explosion effect is poor.
Preferably, the obtaining step of the microwave induced gained variation Bacillus licheniformis is specially：By lichens
The culture fluid of bacillus cereuss is placed in microwave generator, and setting microwave power is 850-950W, and pulse frequency is 2300MHz, microwave
20s is processed, 20s is cooled down, reciprocal 25-35 time according to this；Culture fluid after by microwave treatment is coated on solid medium, 30 DEG C of bars
Cultivate 1-2 days under part, by the high Bacillus licheniformis of alpha-amylase activity under four plants of room temperature of screening in the bacterium colony for surviving
Dissociant.
Further, the dissociant amplification culture of alpha-amylase activity highest Bacillus licheniformis under room temperature is selected,
So as to obtain the normal temperature type α-amylase.Gained normal temperature type α-amylase of the present invention can be formed sediment at normal temperatures well in hydrolysis
Powder, starch impurities of can going out in a mild condition, the starch of enzymolysis removal at normal temperatures can prevent cellulose, lignin, half fibre
The molecular structure group of dimension element etc. changes, to obtain pure Plant fiber.In addition, room temperature enzymolysis can reduce to equipment
Demand, and need not heat, great reduces cost.
Preferably, the addition of the normal temperature type α-amylase meets every kilogram of butt steam explosion powder 200-
700U.
Preferably, possess the alkaline protease of endopeptidase activity in the compound protease and possess peptide ending enzyme work
Property E.C. 3.4.21.64 ratio be 1:1-3；The addition of the compound protease meets every kilogram of butt steam explosion powder 300-
800U.
Preferably, step B Plant fiber is when Gas-making Furnace is processed, and design temperature is 130-200 DEG C, time 5-15
Hour；The Gas-making Furnace has detar, de- flue dust, dehydration vapour purification function.
Preferably, step C1）In, the tinsel is nickel foil piece or copper foil；If the depositing base by
Dry tinsel is combined, and the area of each tinsel is 1-100cm2.
Preferably, step C2）In, it is passed through noble gases and is forced into 1.5-6MPa, is warming up to 300-600 DEG C of carbonization
2-4 minutes, it is continuously heating to 1200-1800 DEG C of carbonization 1.5-3 minute.Using two step charrings, in Plant fiber's carbonaceous gas
Hydrogen, the abjection such as oxygen atom and carbon atom deposition absorption on metal foil substrate surface, continuous grow, so as to obtain Graphene.
Beneficial effects of the present invention are：
The present invention is extracted from Plant fiber first and purification is started with, and has obtained highly purified Plant fiber；On this basis, pass through
The techniques such as gas making, carbonization, have obtained the Graphene finished product of high-quality.Equipment is simple, technical maturity, easy to spread and implement.
When the present invention is extracted with PPF, using special protease and special amylase, in room temperature bar
Protein and starch are eliminated under part；Under room temperature condition avoid well lignin in Plant fiber, hemicellulose and
The change of cellulosic molecule group, farthest maintains the complete state of Plant fiber.In addition, when Plant fiber extracts, adopting
The environment under high pressure provided with room temperature and noble gases；Condition of high voltage ensure that and produce rushing from inside to outside in steam explosion extraction process
Hit power to break through cell wall, high efficiency extraction Plant fiber；It is fine that room temperature and inert gas environment equally well avoid plant
The change of lignin, hemicellulose and cellulosic molecule group in dimension, farthest maintains the complete state of Plant fiber.
Above 2 points are gas making below and carbonization and prepare high-quality Graphene and lay a good foundation.
Specific embodiment
Embodiment 1
A kind of method for preparing Graphene by straw, including step：
The extraction of A Plant fiber
A1）Corn straw through remove impurity, rub silk, cutting, crushed after being dried to 40 mesh, be placed in steam-explosion jar（The addition of corn straw
Amount reaches the 20% of tank body volume）, being passed through nitrogen in steam-explosion jar will seal after air emptying in tank；Continue to be passed through nitrogen to pressure
Power is 2 MPa, and pressurize spurted after 80 minutes, obtains steam explosion powder.
Step A1）Cell wall is broken through using the impulsive force from inside to outside that gases at high pressure are produced during spurting, make thin
Intracellular tolerant all " breaking cellular wall and go out ", the enzymolysis removing of the impurity composition such as protein, starch beneficial to next step；Protein, shallow lake
The compositions such as powder exist only in intracellular, thus must breaking cellular wall.It is fine that room temperature explosion and inert gas environment can be prevented effectively from plant
Dimension（Lignin, hemicellulose, cellulose）The change of molecular radical, to ensure the complete state of Plant fiber.
A2）Steam explosion powder is placed in steam-explosion jar, and adds the water of 10 times of quality of steam explosion powder, be passed through nitrogen so that vapour
Quick-fried powder is uniformly distributed, and is subsequently adding compound protease（500U/Kg butt steam explosion powder）, digest 40 minutes；Often it is subsequently added
Warm type α-amylase（400U/Kg butt steam explosion powder）, digest 30 minutes；Then pass to steam and be warming up to 65 DEG C, be incubated 10 points
Clock, the activity of inactivator.
Wherein, compound protease by the alkaline protease for possessing endopeptidase activity and possesses the active E.C. 3.4.21.64 of peptide ending enzyme
Composition, the alkaline protease for possessing endopeptidase activity in compound protease and the ratio for possessing the active E.C. 3.4.21.64 of peptide ending enzyme are
1: 1；The compound protease can effectively hydrolyzing protein at normal temperatures.
Normal temperature type α-amylase is by microwave induced gained variation Bacillus licheniformis secretion gained α-amylase；Microwave induced
The obtaining step of gained variation Bacillus licheniformis is specially：The culture fluid of Bacillus licheniformis is placed in microwave generator, if
Microwave power is put for 900W, pulse frequency is 2300MHz, microwave treatment 20s, cool down 20s, reciprocal 30 times according to this；At microwave
Culture fluid after reason is coated on solid medium, is cultivated 1-2 days under the conditions of 30 DEG C, screens four plants by the bacterium colony for surviving
The dissociant of the high Bacillus licheniformis of alpha-amylase activity under room temperature.Select alpha-amylase activity highest lichens under room temperature
The dissociant amplification culture of bacillus cereuss, so that obtain normal temperature type α-amylase；Normal temperature type α-amylase is in 22-35 DEG C of temperature
Under expeditiously hydrolysis starch, it is not necessary to the thermal-stable α-amylase as adopting mostly at present needs high temperature（80-90℃）Condition, because
And reduce energy consumption and also reduce the requirement to equipment, while greatly reduce the generation of side reaction.
Herein can be mildly by protein, Starch Hydrolysis into the peptides of small molecule, aminoacid, maltose, Portugal with enzyme process
Grape sugar etc. is entered in filtrate, so as to successful deproteination matter and starch, to ensure the purity of Plant fiber.
Steam explosion under room temperature, high pressure, referred to as " empty quick-fried ".Herein using the empty quick-fried method of high pressure, it is therefore intended that both true
Protect composition in Plant fiber（Cellulose, hemicellulose, lignin）Between separation, avoid the degraded of composition in Plant fiber again
With loss, high yield pulp1, the high activity of Plant fiber is fully ensured that.
A3）After enzyme denaturing, treat that temperature is down to room temperature in steam-explosion jar, be passed through after nitrogen is 2 MPa, pressurize 100 minutes to pressure
Spurt.
A4）Step A3）Gained spurts slurry through press master shove solid-liquid separation, obtains filtering residue and filtrate；Filtering residue is washed with water
After washing 3 times through drying, crush to obtain Plant fiber.
B Plant fiber's gas making
By step A4）Gained Plant fiber is placed in Gas-making Furnace（Gas-making Furnace has detar, de- flue dust, dehydration vapour purification function）,
Design temperature is 180 DEG C, 10 hours time；Plant fiber through Gas-making Furnace process after obtain purify comprising carbon monoxide, methane,
Propane is in interior Plant fiber's carbonaceous gas.
C prepares Graphene by Plant fiber's carbonaceous gas
C1）Nickel foil piece is set in reactor by way of support is pasted, and the area of each nickel foil piece is 10cm2, nickel foil piece cloth
Full reactor is passed through nitrogen, emptying air rear enclosed into reactor as depositing base.
C2）Plant fiber carbonaceous gas of the step B gained comprising carbon monoxide, methane, propane is passed through reactor,
Then pass to nitrogen and be forced into 4MPa, be warming up to 360 DEG C of carbonizations 3 minutes, be continuously heating to 1200 DEG C of carbonizations 2 minutes.Using two
Step charring, the abjection such as hydrogen, oxygen atom in Plant fiber's carbonaceous gas and the absorption of carbon atom deposition in nickel foil matrix surface, even
Continuous growth, so that obtain Graphene.
C3）The rapid gas that releases in reactor, the thin film on depositing base are Graphene.After testing, the present embodiment
The graphene sheet layer thickness for preparing is 0.51nm.
Embodiment 2
A kind of method for preparing Graphene by Eucalyptus, including step：
The extraction of A Plant fiber
A1）Eucalyptus through remove impurity, chip, crushed after being dried to 40 mesh, be placed in steam-explosion jar（The addition of Eucalyptus reaches tank body volume
30%）, being passed through nitrogen in steam-explosion jar will seal after air emptying in tank；It is 3MPa to continue to be passed through nitrogen to pressure, pressurize
Spurt after 100 minutes, obtain steam explosion powder.
Step A1）Cell wall is broken through using the impulsive force from inside to outside that gases at high pressure are produced during spurting, make thin
Intracellular tolerant all " breaking cellular wall and go out ", the enzymolysis removing of the impurity composition such as protein, starch beneficial to next step；Protein, shallow lake
The compositions such as powder exist only in intracellular, thus must breaking cellular wall.It is fine that room temperature explosion and inert gas environment can be prevented effectively from plant
Dimension（Lignin, hemicellulose, cellulose）The change of molecular radical, to ensure the complete state of Plant fiber.
A2）Steam explosion powder is placed in steam-explosion jar, and adds the water of 12 times of quality of steam explosion powder, be passed through nitrogen so that vapour
Quick-fried powder is uniformly distributed, and is subsequently adding compound protease（600U/Kg butt steam explosion powder）, digest 30 minutes；Often it is subsequently added
Warm type α-amylase（500U/Kg butt steam explosion powder）, digest 20 minutes；Then pass to steam and be warming up to 70 DEG C, be incubated 8 points
Clock, the activity of inactivator.
Wherein, compound protease by the alkaline protease for possessing endopeptidase activity and possesses the active E.C. 3.4.21.64 of peptide ending enzyme
Composition, the alkaline protease for possessing endopeptidase activity in compound protease and the ratio for possessing the active E.C. 3.4.21.64 of peptide ending enzyme are
1: 2；The compound protease can effectively hydrolyzing protein at normal temperatures.
Normal temperature type α-amylase is by microwave induced gained variation Bacillus licheniformis secretion gained α-amylase；Microwave induced
The obtaining step of gained variation Bacillus licheniformis is specially：The culture fluid of Bacillus licheniformis is placed in microwave generator, if
Microwave power is put for 900W, pulse frequency is 2300MHz, microwave treatment 20s, cool down 20s, reciprocal 30 times according to this；At microwave
Culture fluid after reason is coated on solid medium, is cultivated 1-2 days under the conditions of 30 DEG C, screens four plants by the bacterium colony for surviving
The dissociant of the high Bacillus licheniformis of alpha-amylase activity under room temperature.Select alpha-amylase activity highest lichens under room temperature
The dissociant amplification culture of bacillus cereuss, so that obtain normal temperature type α-amylase；Normal temperature type α-amylase is in 22-35 DEG C of temperature
Under expeditiously hydrolysis starch, it is not necessary to the thermal-stable α-amylase as adopting mostly at present needs high temperature（80-90℃）Condition, because
And reduce energy consumption and also reduce the requirement to equipment, while greatly reduce the generation of side reaction.
Herein can be mildly by protein, Starch Hydrolysis into the peptides of small molecule, aminoacid, maltose, Portugal with enzyme process
Grape sugar etc. is entered in filtrate, so as to successful deproteination matter and starch, to ensure the purity of Plant fiber.
Steam explosion under room temperature, high pressure, referred to as " empty quick-fried ".Herein using the empty quick-fried method of high pressure, it is therefore intended that both true
Protect composition in Plant fiber（Cellulose, hemicellulose, lignin）Between separation, avoid the degraded of composition in Plant fiber again
With loss, high yield pulp1, the high activity of Plant fiber is fully ensured that.
A3）After enzyme denaturing, treat that temperature is down to room temperature in steam-explosion jar, it is to spray after 3 MPa, pressurize 90 minutes to be passed through nitrogen to pressure
Put.
A4）Step A3）Gained spurts slurry through pressure filter filter pressing solid-liquid separation, obtains filtering residue and filtrate；Filtering residue is washed with water
After washing 4 times through drying, crush to obtain Plant fiber.
B Plant fiber's gas making
By step A4）Gained Plant fiber is placed in Gas-making Furnace（Gas-making Furnace has detar, de- flue dust, dehydration vapour purification function）,
Design temperature is 200 DEG C, 15 hours time；Plant fiber through Gas-making Furnace process after obtain purify comprising carbon monoxide, methane,
Propane is in interior Plant fiber's carbonaceous gas.
C prepares Graphene by Plant fiber's carbonaceous gas
C1）Copper foil is set in reactor by way of support is pasted, and the area of each copper foil is 15cm2, copper foil cloth
Full reactor is passed through nitrogen, emptying air rear enclosed into reactor as depositing base.
C2）Plant fiber carbonaceous gas of the step B gained comprising carbon monoxide, methane, propane is passed through reactor,
Then pass to nitrogen and be forced into 5 MPa, be warming up to 400 DEG C of carbonizations 4 minutes, be continuously heating to 1500 DEG C of carbonizations 3 minutes.Using two
Step charring, the abjection such as hydrogen, oxygen atom in Plant fiber's carbonaceous gas and the absorption of carbon atom deposition in Copper Foil matrix surface, even
Continuous growth, so that obtain Graphene.
C3）The rapid gas that releases in reactor, the thin film on depositing base are Graphene.After testing, the present embodiment
The graphene sheet layer thickness for preparing is 0.48nm.
Claims (10)
1. a kind of method that Graphene is prepared by straw, forest or its side-product, it is characterised in that including step：
The extraction of A Plant fiber
A1）Straw, forest or its side-product are crushed after pretreatment, are placed in steam-explosion jar, in the steam-explosion jar are passed through inertia
Gas will be sealed after air emptying in tank；It is 1-5 MPa to continue to be passed through noble gases to pressure, sprays after pressurize 20-120 minutes
Put, obtain steam explosion powder；
A2）The steam explosion powder is placed in steam-explosion jar, and adds the water of steam explosion 1-20 times of quality of powder, be passed through noble gases,
So that steam explosion powder is uniformly distributed, compound protease is subsequently adding, digests 10-80 minutes；Normal temperature type α-amylase is subsequently added,
Enzymolysis 10-80 minutes；Then pass to steam and be warming up to 60-75 DEG C, be incubated 2-20 minutes, the activity of inactivator；The compound egg
White enzyme is made up of the alkaline protease for possessing endopeptidase activity and the E.C. 3.4.21.64 for possessing peptide ending enzyme activity；Normal temperature type α-the shallow lake
Powder enzyme is by microwave induced gained variation Bacillus licheniformis secretion gained α-amylase, the suitable temperature of the normal temperature type α-amylase
Spend for 22-35 DEG C；
A3）After enzyme denaturing, treat that temperature is down to room temperature in steam-explosion jar, it is 1-5 MPa, pressurize 60-200 point to be passed through noble gases to pressure
Spurt after clock；
A4）Step A3）Gained spurts slurry solid-liquid separation, obtains filtering residue and filtrate；Filtering residue wash with water after through drying, crush
Plant fiber；
B Plant fiber's gas making
By step A4）Gained Plant fiber is placed in Gas-making Furnace, and design temperature is 80-300 DEG C, time 2-24 hour；Plant fiber
Obtain, after Gas-making Furnace process, the Plant fiber's carbonaceous gas for including carbon monoxide, methane, propane；
C prepares Graphene by Plant fiber's carbonaceous gas
C1）Tinsel is set in reactor used as depositing base, the depositing base is covered with reactor, leads to into reactor
Enter noble gases, emptying air rear enclosed；
C2）Plant fiber carbonaceous gas of the step B gained comprising carbon monoxide, methane, propane is passed through reactor, then
It is passed through noble gases and is forced into 0.5-10 MPa, is warming up to 200-700 DEG C of carbonization 1-6 minute, is continuously heating to 1000-2000 DEG C
Carbonization 0.5-5 minutes；
C3）The gas in reactor is released, the thin film on the depositing base is Graphene.
2. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that：Step A1）
Described in pretreatment include remove impurity, rub silk, cutting, dry run；Step A1）Described in crush be by straw, forest or which is secondary
Product is crushed to 30-50 mesh.
3. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that：Step A1）
In, the addition of straw, forest or its side-product reaches the 5%-50% of tank body volume.
4. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that described micro-
The obtaining step of ripple induction gained variation Bacillus licheniformis is specially：The culture fluid of Bacillus licheniformis is placed in microwave generation
Device, setting microwave power are 850-950W, and pulse frequency is 2300MHz, microwave treatment 20s, cool down 20s, according to this reciprocal 25-35
Secondary；Culture fluid after by microwave treatment is coated on solid medium, is cultivated 1-2 days, by the bacterium for surviving under the conditions of 30 DEG C
Fall to screening the dissociant of the high Bacillus licheniformis of alpha-amylase activity under four plants of room temperature.
5. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 4, it is characterised in that：Often select
The dissociant amplification culture of the lower alpha-amylase activity highest Bacillus licheniformis of temperature, so that obtain the normal temperature type alphalise starch
Enzyme.
6. the method for Graphene being prepared by straw, forest or its side-product as described in claim 1 or 5, it is characterised in that：Described
The addition of normal temperature type α-amylase meets every kilogram of butt steam explosion powder 200-700U.
7. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that：Described multiple
It is 1 to possess the alkaline protease of endopeptidase activity in hop protein enzyme with the ratio of the E.C. 3.4.21.64 for possessing peptide ending enzyme activity:1-3；Institute
The addition for stating compound protease meets every kilogram of butt steam explosion powder 300-800U.
8. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that：Step B is planted
When Gas-making Furnace is processed, design temperature is 130-200 DEG C to fibres, time 5-15 hour；The Gas-making Furnace has detar, takes off
Flue dust, dehydration vapour purification function.
9. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that：Step C1）
In, the tinsel is nickel foil piece or copper foil；The depositing base is combined by some tinsels, each tinsel
Area be 1-100cm2.
10. the method for Graphene being prepared by straw, forest or its side-product as claimed in claim 1, it is characterised in that：Step
C2）In, it is passed through noble gases and is forced into 1.5-6MPa, is warming up to 300-600 DEG C of carbonization 2-4 minute, is continuously heating to 1200-
1800 DEG C of carbonization 1.5-3 minutes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171818A (en) * | 2019-06-05 | 2019-08-27 | 平凉市佳禾农产品加工有限责任公司 | The extracting method of graphene in a kind of corn stover |
| CN116060002A (en) * | 2023-02-24 | 2023-05-05 | 中国科学院生态环境研究中心 | Graphene-loaded metal monoatomic composite material, preparation method and application |
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| CN1896252A (en) * | 2006-06-24 | 2007-01-17 | 中国科学技术大学 | Production of marsh-gas by organic efficient anaerobic fermentation |
| CN102220566A (en) * | 2011-06-09 | 2011-10-19 | 无锡第六元素高科技发展有限公司 | Method for preparing single-layer or multi-layer graphene through chemical vapor deposition |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896252A (en) * | 2006-06-24 | 2007-01-17 | 中国科学技术大学 | Production of marsh-gas by organic efficient anaerobic fermentation |
| CN102220566A (en) * | 2011-06-09 | 2011-10-19 | 无锡第六元素高科技发展有限公司 | Method for preparing single-layer or multi-layer graphene through chemical vapor deposition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171818A (en) * | 2019-06-05 | 2019-08-27 | 平凉市佳禾农产品加工有限责任公司 | The extracting method of graphene in a kind of corn stover |
| CN116060002A (en) * | 2023-02-24 | 2023-05-05 | 中国科学院生态环境研究中心 | Graphene-loaded metal monoatomic composite material, preparation method and application |
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