CN105386076A - Improvement method for carbon nano tube preparation system based on high-temperature electrolysis of CO2 - Google Patents
Improvement method for carbon nano tube preparation system based on high-temperature electrolysis of CO2 Download PDFInfo
- Publication number
- CN105386076A CN105386076A CN201510891230.6A CN201510891230A CN105386076A CN 105386076 A CN105386076 A CN 105386076A CN 201510891230 A CN201510891230 A CN 201510891230A CN 105386076 A CN105386076 A CN 105386076A
- Authority
- CN
- China
- Prior art keywords
- electrolysis
- temperature
- carbon nanotube
- reaction
- anode
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention relates to an improvement method for a carbon nano tube preparation system based on high-temperature electrolysis of CO2. The carbon nano tube preparation system based on high-temperature electrolysis of the CO2 comprises an electrolysis unit, an electric heating unit and an inert gas shielding unit. The electric heating unit is used for heating the electrolysis unit. The electrolysis unit is composed of a direct-current power source, a cathode, an anode, an electrolytic tank and an electrolyte. The electrolyte is the mixture of fused carbonate and a fused oxide. The electrolysis temperature ranges from 610 DEG C to 690 DEG C. The molar ratio of the oxide and the carbonate in the mixture is 0-0.2, and constant-current electrolysis or constant-voltage electrolysis can be adopted. When constant-current electrolysis is adopted, the current density of the direct-current power source is controlled between 20 mA/cm<2> and 500 mA/cm<2>. When constant-voltage electrolysis is adopted, the voltage of the direct-current power source is controlled between 2.2 V and 3.2 V. During electrolysis, a carbon nano tube and CO are obtained on the cathode, O2 is obtained on the anode, the electrolyte absorbs the supplied CO2 and reacts with the CO2, and thus regeneration is achieved. According to the system, the carbon nano tube is generated in a one-step mode, the reaction is simple, the quantity of by-products is small, and the selectivity is good; by introducing inert gas into a reaction system, the corrosion speed of the electrodes and the corrosion speed of the electrolytic tank are decreased, and thus the corrosion resistance of the whole system is improved; the system has the characteristics of being clean, capable of saving energy, high in efficiency, safe and continuous, and a novel approach is provided for energy saving, emission reduction and resource utilization of the CO2.
Description
Technical field
The present invention relates to a kind of high-temperature electrolysis CO
2improving one's methods of carbon nanotube system processed, belongs to energy-saving and emission-reduction and CO
2recycling field.
Background technology
Since the Industrial Revolution, the excessive exploitation of fossil oil (coal, oil, Sweet natural gas etc.) makes CO in air
2concentration by being increased to 0.27 at the beginning of last century ‰ now more than 0.4 ‰.According to statistics, the whole world is every year because of the CO of combustion of fossil fuel generation
2up to 6Gt, end 2013, fossil energy provides 90% of total world energy demand amount, this means CO from now on
2quantity discharged also will constantly increase.But, as the final product of carbon containing class substance combustion process, CO
2also be the abundantest C1 resource of occurring in nature content, therefore, explore CO
2chemical conversion with utilize technology be to environment protection or utilization of resources all significant.
At present, CO
2chemical conversion technology mainly concentrates on catalytic activation synthesis organic-fuel or industrial chemicals, as CH
4, CO+H
2, urea, methyl alcohol etc.Cong Yu etc. adopt ultra-fine Cu-ZnO-ZrO
2catalyzer carbon dioxide conversion is methyl alcohol and yield up to 73.4g (kh)
-1, higher than industrial CH
3oH Catalysts Cu-ZnO-Al
2o
3; Appropriate 2,2-dimethoxypropane is mixed with CeO by Tomishige etc.
2-ZrO
2in catalyst system, this catalyst system is adopted to promote carbonic acid gas and methyl alcohol Formed dimethyl phthalate; Choudhary etc. utilize NiO-CaO catalyzer to make CO
2to CH
4transformation efficiency reach 99%, and CO and H
2selectivity all reach 100%.More than react and all need to carry out under comparatively exacting terms, such as high temperature, high pressure, catalyzer etc., therefore need to be equipped with special reactor, expensive, work-ing life is lower.In its reaction process, because catalyst performance is lower, easy inactivation under high temperature, and also easily cause danger in production process, still there is many challenges and difficulty in the recycling therefore adopting high-pressure catalytic hydride process to realize carbonic acid gas.
Relative to above very harsh method for transformation, in recent years, safely, the clean and electrochemistry of easy handling catches and transforms CO
2technology becomes CO
2one of focus of recycling area research.Current, to CO
2the research of electrochemical reduction mainly concentrates in water solvent or non-aqueous organic solvent CO
2carry out electrolysis, in addition, CO
2as the high stability incombustible substance molecule of one, its thermodynamic stability is very superior, therefore, directly electrolytic reduction carries out to it very difficult, need greater energy consumption (high electrolysis voltage), simultaneously electrolytic reaction is very complicated, efficiency and selectivity poor.Based on this, develop a kind of low cost, simple, the efficient CO of device
2the method of recycling and device are very necessary to obtain better economy, society and environmental benefit.
Summary of the invention
The invention provides that a kind of system is simple, energy-conservation, low cost, efficient, corrosion resistant CO
2resource utilization method, high-temperature electrolysis CO
2improving one's methods of carbon nanotube system processed, this system under low electrolysis voltage and relative low temperature condition, can realize CO
2recycling; obtain the carbon nanotube be all of great value at the other field of nanotechnology, electronics, optics and Materials science and technology; and electrolytic reaction is relatively simple; can a step Formed nanotube; good reaction selectivity, by product is few, in addition; this system is protected system by rare gas element (He, Ar, Ne), improves its erosion resistance.
The object of the invention is to be achieved through the following technical solutions:
A kind of high-temperature electrolysis CO
2the improved system of carbon nanotube system processed, this system comprises electrolysis cells and electric heating unit, electric heating unit heats electrolysis cells, electrolysis cells is by direct supply, negative electrode, anode, electrolyzer and ionogen composition, it is characterized in that: described ionogen is the mixture of fused carbonate and molten oxide, in mixture, the mol ratio of oxide compound and carbonate is (0, 0.2] in interval, electrolysis temperature is between 610 ~ 690 DEG C, adopt constant-current electrolysis or constant potential electrolysis, when adopting constant-current electrolysis, the current density of direct supply controls at 20 ~ 500mA/cm
2between, when adopting constant potential electrolysis, the voltage control of direct supply is between 2.2V ~ 3.2V, in electrolysis, obtain carbon nanotube and CO at negative electrode, anode obtains O
2, ionogen and CO
2reaction is regenerated, described system also comprises protection of inert gas unit, in order to pass into rare gas element in electrolytic reaction system, delay the corrosion speed of electrode and electrolyzer, thus improve the erosion resistance of whole system, helium, argon gas or neon that described protection of inert gas unit can adopt steel cylinder to encapsulate.
Its electrolytic reaction mechanism is:
Anodic reaction: 2O
2--4e
-=O
2
Cathodic reaction: CO
3 2-+ 4e
-=C+3O
2-
CO
3 2-+2e
-＝CO+2O
2-
CO
3 2-+3e
-＝1/2CO+1/2C+5/2O
2-
Wherein enrichment carbon nanotube in the simple substance carbon of negative electrode generation.
Further, described direct supply current density is 20 ~ 500mA/cm
2, electrolyzer temperature is 610 ~ 690 DEG C; Described direct supply current density is preferably 100 ~ 400mA/cm
2,electrolyzer temperature is preferably 627 ~ 677 DEG C.
Further, carbonate is Li
2cO
3, Na
2cO
3, K
2cO
3, Rb
2cO
3, Cs
2cO
3, Fr
2cO
3, MgCO
3, CaCO
3, SrCO
3, BaCO
3, ZnCO
3in one or more mixture; Oxide compound is Li
2o, Na
2o, K
2o, Rb
2o, Cs
2o, Fr
2o, MgO, CaO, SrO, BaO, ZnO, SiO
2, Al
2o
3, Fe
2o
3in one or more mixture.
Further, when ionogen is solid-state, ionogen is provided to reach heat energy required for complete molten state by described electric heating unit.
Further, described electric heating unit adopts pottery or other high temperature modification electric heating covers, regulates and controls Heating temperature by regulating transformer load.
Further, helium, argon gas or neon that described protection of inert gas unit adopts steel cylinder to encapsulate.
Further, the cathode material of described electrolysis cells is nickel, platinum, titanium, ruthenium, iridium, palladium, iron, tungsten, chromium, copper, gold, graphite or stainless steel, or the alloy of several formation in above-mentioned materials; The anode material of described electrolysis cells is nickel, platinum, titanium, ruthenium, iridium, palladium, iron, tungsten, chromium, copper, gold, graphite or stainless steel, or the alloy of several formation in above-mentioned materials.
Further, described electrolyzer adopts high-purity corundum body crucible, high purity nickel or other high temperature corrosion-resisting type reactors.
Based on above-mentioned high-temperature electrolysis CO
2improving one's methods of carbon nanotube system processed, comprises the steps:
(1) electrolysis cells be made up of direct supply, negative electrode, anode, electrolyzer, ionogen and protection of inert gas unit is built;
(2) solid state electrolyte is heated to form molten state ionogen by electric heating unit;
(3) electrolyzer homo(io)thermism is controlled at 610 ~ 690 DEG C;
(4) in electrolyzer, CO is passed into by airway
2, when adopting constant-current electrolysis, control the current density of direct supply at 20 ~ 500mA/cm
2between, when adopting constant potential electrolysis, control the voltage of direct supply between 2.2V ~ 3.2V, reaction certain hour, main reaction one step generates primary product simple substance carbon, enrichment carbon nanotube in simple substance carbon, and total reaction is:
CO
2＝C+O
2；
CO
2＝1/2O
2+CO；
CO
2＝3/4O
2+1/2CO+1/2C；
Its electrolytic reaction mechanism is:
Anodic reaction: 2O
2--4e
-=O
2
Cathodic reaction: CO
3 2-+ 4e
-=C+3O
2-
CO
3 2-+2e
-＝CO+2O
2-
CO
3 2-+3e
-＝1/2CO+1/2C+5/2O
2-。
Advantageous Effects of the present invention is as follows:
Electric energy conversion is heat energy by electric heating unit by 1, electrolytic reaction process, heating ionogen, according to electrolytical difference regulation and control Heating temperature; Use direct supply to provide electric energy, according to electrolytical kind and Heating temperature, the electrolysis voltage needed for regulation and control or electric current, by electrolysis CO simultaneously
2, negative electrode obtains carbon nanotube and CO, and anode obtains O
2, achieve electric energy to chemical transformation of energy and storage, the CO of electrolyte solution absorption supply in electrolytic process
2, with CO
2reaction makes ionogen be regenerated, thus achieves CO
2recycle and recycling.。
2, CO of the present invention
2the mechanism of electrolysis of high-temperature electrolysis carbon nanotube is:
Anodic reaction:
[1]2O
2--4e
-＝O
2
Cathodic reaction:
[2] formation of carbon: CO
3 2-+ 4e
-=C+3O
2-
[3] formation of carbon monoxide: CO
3 2-+ 2e
-=CO+2O
2-
[4] formation of carbon monoxide and carbon: CO
3 2-+ 3e
-=1/2CO+1/2C+5/2O
2-
Adduction cathode and anode is reacted, and can obtain electrolytic reaction:
[5]M
2CO
3＝C(s)+O
2+M
2O；
[6]M
2CO
3＝CO+M
2O+1/2O
2；
[7]M
2CO
3＝1/2CO+1/2C+M
2O+3/4O
2；
[8] CO
2absorption reaction: M
2o+CO
2=M
2cO
3
By electrolytic reaction [5], [6], [7] and CO
2absorption reaction [8] sum up, electrolysis cells total reaction can be obtained:
[9]CO
2＝C+O
2；
[10]CO
2＝1/2O
2+CO；
[11]CO
2＝3/4O
2+1/2CO+1/2C
Carbanion in fused carbonate electrolyte by converting be solid carbon simple substance and CO (as shown in equation [2] and equation [3]), generate O simultaneously
2-.The negative oxygen ion discharged on the one hand can with the CO in atmosphere
2react and regenerative carbon acid group (equation [8]), thus realize continuable CO
2trapping and electrochemical conversion, also can migrate to anode and oxidation occur and generates oxygen (equation [1]), define CO
2-CO
3 2--C+CO+O
2the recycle system, is wherein rich in carbon nanotube in the simple substance carbon of negative electrode generation.
3, this system carrys out synthesizing carbon nanotubes by control current density and electrolysis temperature, and electrolysis temperature is 610 ~ 690 DEG C, adopts constant-current electrolysis or constant potential electrolysis, and when adopting constant-current electrolysis, the current density of direct supply controls at 20 ~ 500mA/cm
2between, when adopting constant potential electrolysis, the voltage control of direct supply is between 2.2V ~ 3.2V, and electrolysis certain hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode generates.
4, compared with prior art, this system has following outstanding feature: the first, and current density reduces greatly, and current density is only 20 ~ 500mA/cm
2, electrolysis voltage is only 2.2V ~ 3.2V; Second: adopt multiple carbonate and metal oxide mixture as ionogen, while reducing system fusing point, add the capturing ability of ionogen to carbonic acid gas, electrolytical renewal speed is improved greatly; 3rd: electrode materials can select cheap iron wire and nichrome wire, significantly reduces production cost.
5, this specifically has protection of inert gas unit, by passing in reaction system by rare gas element, delays the corrosion speed of electrode and electrolyzer, thus improves the erosion resistance of whole system.
6, the present invention one step Formed nanotube, reaction is simple, and by product is few, and selectivity is good, good corrosion resistance.Utilize electric energy and electrochemical effect simultaneously, build corrosion resistant CO
2transforming carbon nanotube system processed, constitute perfect Conversion of energy and stocking system, have clean, efficient, safe and continuable feature, is energy-saving and emission-reduction and CO
2recycling provides new approach.
Accompanying drawing explanation
Fig. 1 present system schematic diagram
In figure: 1 anode; 2 electric heating covers; 3 ionogen; 4 electrolyzers; 5 negative electrodes; 6 airways; 7 direct supplys; 8 wires; 9 anodic product O
2; 10 reaction raw materials CO
2; 11 negative electrode by product CO; 12 inertia gas cylinders
Embodiment
Comparative example: do not adopt protection of inert gas unit in system
Respectively by 22gLi
2cO
3, 61gNa
2cO
3and 17gK
2cO
3grind in mortar and mix, be transferred in corundum crucible; Be 50cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 610 (± 2) DEG C, constant current density is 20mA/cm
2.React after 1 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces.Anode nickel chromium alloy wire seriously corroded, only remains 3.5cm
2left and right.
Embodiment 1
Respectively by 61gLi
2cO
3, 22gNa
2cO
3and 17gK
2cO
3grind in mortar and mix, be transferred in corundum crucible; Be 10cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 620 (± 2) DEG C, constant current density is 150mA/cm
2.React after 1 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 2
Respectively by 61gLi
2cO
3, 22gNa
2cO
3, 17gK
2cO
3and 2.15gNa
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 630 (± 2) DEG C, constant current density is 350mA/cm
2.React after 0.8 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 3
Respectively by 20gMgCO
3, 42gSrCO
3, 30gBaCO
3and 3.17gK
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 640 (± 2) DEG C, constant current density is 450mA/cm
2.React after 0.8 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 4
Respectively by 61gLi
2cO
3, 22gNa
2cO
3, 17gK
2cO
3and 2.7gLi
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 650 (± 2) DEG C, current constant is 500mA/cm
2.React after 0.8 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 5
Respectively by 46.5gLi
2cO
3, 16.5gNa
2cO
3, 12.75gK
2cO
3and 8.15gNa
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 660 (± 2) DEG C, voltage constant is 2.2 ~ 2.5V.React after 0.5 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 6
Respectively by 20gMgCO
3, 42gSrCO
3, 30gBaCO
3and 1.1gLi
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 670 (± 2) DEG C, voltage constant is 2.5 ~ 3.2V.React after 0.5 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 7
Respectively by 20gMgCO
3, 42gSrCO
3, 30gBaCO
3and 2gLi
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 680 (± 2) DEG C, voltage constant is 2.2 ~ 3.2V.React after 0.5 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Embodiment 8
Respectively by 31gLi
2cO
3, 11gNa
2cO
3, 8.5gK
2cO
3and 3.5gLi
2o grinds and mixes in mortar, is transferred in corundum crucible; Be 5cm by surface-area respectively
2nichrome wire and iron wire as anode and negative electrode; Make homo(io)thermism be 690 (± 2) DEG C, voltage constant is 2.5 ~ 3.2V.React after 0.5 hour, containing a large amount of carbon nanotube in the simple substance carbon that negative electrode produces, anode nickel chromium alloy wire is almost unchanged, and pattern is complete.
Claims (8)
1. a high-temperature electrolysis CO
2improving one's methods of carbon nanotube system processed, this system comprises electrolysis cells and electric heating unit, electric heating unit heats electrolysis cells, electrolysis cells is by direct supply, negative electrode, anode, electrolyzer and ionogen composition, it is characterized in that: described ionogen is the mixture of fused carbonate and molten oxide, in mixture, the mol ratio of oxide compound and carbonate is (0, 0.2] in interval, electrolysis temperature is between 610 ~ 690 DEG C, adopt constant-current electrolysis or constant potential electrolysis, when adopting constant-current electrolysis, the current density of direct supply controls at 20 ~ 500mA/cm
2between, when adopting constant potential electrolysis, the voltage control of direct supply is between 2.2V ~ 3.2V, in electrolysis, obtain carbon nanotube and CO at negative electrode, anode obtains O
2, ionogen and CO
2reaction is regenerated, described system also comprises protection of inert gas unit, in order to pass into rare gas element in electrolytic reaction system.
2. high-temperature electrolysis CO according to claim 1
2improving one's methods of carbon nanotube system processed, is characterized in that, described direct supply current density is 100 ~ 400mA/cm
2, electrolyzer temperature is 627 ~ 677 DEG C.
3. high-temperature electrolysis CO according to claim 1
2improving one's methods of carbon nanotube system processed, is characterized in that, when ionogen is solid-state, provides ionogen to reach heat energy required for complete molten state by described electric heating unit.
4. high-temperature electrolysis CO according to claim 1
2improving one's methods of carbon nanotube system processed; it is characterized in that; described electric heating unit adopts pottery or other high temperature modification electric heating covers, by regulating transformer load to regulate and control Heating temperature, and helium, argon gas or neon that described protection of inert gas unit adopts steel cylinder to encapsulate.
5. high-temperature electrolysis CO according to claim 1
2improving one's methods of carbon nanotube system processed, is characterized in that, carbonate is Li
2cO
3, Na
2cO
3, K
2cO
3, Rb
2cO
3, Cs
2cO
3, Fr
2cO
3, MgCO
3, CaCO
3, SrCO
3, BaCO
3, ZnCO
3in one or more mixture; Oxide compound is Li
2o, Na
2o, K
2o, Rb
2o, Cs
2o, Fr
2o, MgO, CaO, SrO, BaO, ZnO, SiO
2, Al
2o
3, Fe
2o
3in one or more mixture.
6. high-temperature electrolysis CO according to claim 1
2improving one's methods of carbon nanotube system processed, is characterized in that, the cathode material of described electrolysis cells is nickel, platinum, titanium, ruthenium, iridium, palladium, iron, tungsten, chromium, copper, gold, graphite or stainless steel, or the alloy of several formation in above-mentioned materials; The anode material of described electrolysis cells is nickel, platinum, titanium, ruthenium, iridium, palladium, iron, tungsten, chromium, copper, gold, graphite or stainless steel, or the alloy of several formation in above-mentioned materials.
7. high-temperature electrolysis CO according to claim 1
2improving one's methods of carbon nanotube system processed, is characterized in that, described electrolyzer adopts high-purity corundum body crucible, high purity nickel or other high temperature corrosion-resisting type reactors.
8. based on the high-temperature electrolysis CO described in claim 1,3,4,5,6 or 7
2carbon nanotube system processed improve one's methods and comprise the steps:
(1) electrolysis cells be made up of direct supply, negative electrode, anode, electrolyzer, ionogen and protection of inert gas unit is built;
(2) solid state electrolyte is heated to form molten state ionogen by electric heating unit;
(3) electrolyzer homo(io)thermism is controlled at 610 ~ 690 DEG C;
(4) in electrolyzer, CO is passed into by airway
2, when adopting constant-current electrolysis, control the current density of direct supply at 20 ~ 500mA/cm
2between, when adopting constant potential electrolysis, control the voltage of direct supply between 2.2V ~ 3.2V, reaction certain hour, main reaction one step generates primary product simple substance carbon, enrichment carbon nanotube in simple substance carbon, and total reaction is:
CO
2＝C+O
2；
CO
2＝1/2O
2+CO；
CO
2＝3/4O
2+1/2CO+1/2C；
Its electrolytic reaction mechanism is:
Anodic reaction: 2O
2--4e
-=O
2
Cathodic reaction: CO
3 2-+ 4e
-=C+3O
2-
CO
3 2-+2e
-＝CO+2O
2-
CO
3 2-+3e
-＝1/2CO+1/2C+5/2O
2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891230.6A CN105386076A (en) | 2015-12-07 | 2015-12-07 | Improvement method for carbon nano tube preparation system based on high-temperature electrolysis of CO2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891230.6A CN105386076A (en) | 2015-12-07 | 2015-12-07 | Improvement method for carbon nano tube preparation system based on high-temperature electrolysis of CO2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105386076A true CN105386076A (en) | 2016-03-09 |
Family
ID=55418832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510891230.6A Pending CN105386076A (en) | 2015-12-07 | 2015-12-07 | Improvement method for carbon nano tube preparation system based on high-temperature electrolysis of CO2 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105386076A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735862A (en) * | 2019-01-29 | 2019-05-10 | 东北大学 | Utilize no lithium calcium base molten-salt growth method processing metallurgic waste gas and the method for resource utilization |
| CN114401591A (en) * | 2022-01-10 | 2022-04-26 | 奥特斯科技(重庆)有限公司 | Regenerator for metal-containing fluids for use in component carrier manufacturing, systems and methods |
| CN114630926A (en) * | 2019-10-29 | 2022-06-14 | C2Cnt有限责任公司 | System and method for fabricating carbon nanostructures |
| CN114921798A (en) * | 2016-11-16 | 2022-08-19 | C2Cnt有限责任公司 | Method and system for producing long carbon nanofibers |
| US11939682B2 (en) | 2021-11-24 | 2024-03-26 | C2Cnt Llc | Electrolysis methods that utilize carbon dioxide and a non-iron additive for making desired nanocarbon allotropes |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007046713A1 (en) * | 2005-10-21 | 2007-04-26 | Norsk Hydro Asa | Method for production of carbon materials |
| CN102168280A (en) * | 2011-03-10 | 2011-08-31 | 东北大学 | Method for TiC electrochemical synthesis in low-temperature molten salts |
| US20120241327A1 (en) * | 2011-03-26 | 2012-09-27 | The University Of Connecticut | Materials and design for an electrocatalytic device and method which produces carbon nanotubes and hydrocarbon transportation fuels |
| CN102895847A (en) * | 2011-07-26 | 2013-01-30 | 武汉大学 | CO2 capturing and resourcing method |
| CN103922309A (en) * | 2014-04-09 | 2014-07-16 | 江苏天泽纳米科技有限公司 | Method for preparing carbon nanotube |
| CN104321909A (en) * | 2012-03-26 | 2015-01-28 | 剑桥企业有限公司 | Powder comprising carbon nanostructures and its method of production |
| CN104593804A (en) * | 2015-01-15 | 2015-05-06 | 东北石油大学 | System for preparing synthetic gas by virtue of high-temperature electrolysis of CO2/H2O and application of system |
-
2015
- 2015-12-07 CN CN201510891230.6A patent/CN105386076A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007046713A1 (en) * | 2005-10-21 | 2007-04-26 | Norsk Hydro Asa | Method for production of carbon materials |
| CN102168280A (en) * | 2011-03-10 | 2011-08-31 | 东北大学 | Method for TiC electrochemical synthesis in low-temperature molten salts |
| US20120241327A1 (en) * | 2011-03-26 | 2012-09-27 | The University Of Connecticut | Materials and design for an electrocatalytic device and method which produces carbon nanotubes and hydrocarbon transportation fuels |
| CN102895847A (en) * | 2011-07-26 | 2013-01-30 | 武汉大学 | CO2 capturing and resourcing method |
| CN104321909A (en) * | 2012-03-26 | 2015-01-28 | 剑桥企业有限公司 | Powder comprising carbon nanostructures and its method of production |
| CN103922309A (en) * | 2014-04-09 | 2014-07-16 | 江苏天泽纳米科技有限公司 | Method for preparing carbon nanotube |
| CN104593804A (en) * | 2015-01-15 | 2015-05-06 | 东北石油大学 | System for preparing synthetic gas by virtue of high-temperature electrolysis of CO2/H2O and application of system |
Non-Patent Citations (2)
| Title |
|---|
| ALEKSANDAR T. DIMITROV等: ""A feasibility study of scaling-up the electrolytic production of carbon nanotubes in molten salts"", 《ELECTROCHIMICA ACTA》 * |
| 王宝辉等: ""太阳能驱动高温熔融碳酸盐电解电势的理论分析"", 《大庆石油学院学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921798A (en) * | 2016-11-16 | 2022-08-19 | C2Cnt有限责任公司 | Method and system for producing long carbon nanofibers |
| CN114921798B (en) * | 2016-11-16 | 2024-05-10 | C2Cnt有限责任公司 | Method and system for manufacturing long carbon nanofibers |
| CN109735862A (en) * | 2019-01-29 | 2019-05-10 | 东北大学 | Utilize no lithium calcium base molten-salt growth method processing metallurgic waste gas and the method for resource utilization |
| CN114630926A (en) * | 2019-10-29 | 2022-06-14 | C2Cnt有限责任公司 | System and method for fabricating carbon nanostructures |
| US11939682B2 (en) | 2021-11-24 | 2024-03-26 | C2Cnt Llc | Electrolysis methods that utilize carbon dioxide and a non-iron additive for making desired nanocarbon allotropes |
| US12000054B2 (en) | 2021-11-24 | 2024-06-04 | C2Cnt Llc | Electrolysis methods that utilize carbon dioxide for making a macro-assembly of nanocarbon |
| US12031218B2 (en) * | 2021-11-24 | 2024-07-09 | C2Cnt Llc | Electrolysis methods that utilize carbon dioxide and a high nickel-content anode for making desired nanocarbon allotropes |
| CN114401591A (en) * | 2022-01-10 | 2022-04-26 | 奥特斯科技(重庆)有限公司 | Regenerator for metal-containing fluids for use in component carrier manufacturing, systems and methods |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105506665B (en) | A kind of method of high-temperature electrolysis CO2 CNTs | |
| CN104593804B (en) | A kind of high-temperature electrolysis CO 2/ H 2o prepares synthetic gas system and application thereof | |
| Graves et al. | Sustainable hydrocarbon fuels by recycling CO2 and H2O with renewable or nuclear energy | |
| JP5385153B2 (en) | Method for producing hydrogen and sulfuric acid | |
| CN104593803B (en) | A kind of Driven by Solar Energy high-temperature electrolysis CO 2/ H 2o preparing synthetic gas system and application thereof | |
| CN102517601B (en) | Method for preparing Cu2O/TiO2 nano-tube array electrode with grapheme assembled on surface | |
| CN105386076A (en) | Improvement method for carbon nano tube preparation system based on high-temperature electrolysis of CO2 | |
| KR102251314B1 (en) | System for producing carbon monoxide and hydrogen from carbon dioxide and steam through a redox process and the method thereof | |
| JP3198298B2 (en) | Method for producing hydrogen by photocatalyst-electrolysis hybrid system | |
| CN105951117B (en) | A kind of electrolytic method of low cost production high purity of hydrogen peroxide and hydrogen | |
| CN104562073B (en) | A kind of high-temperature electrolysis CO 2/ H 2o prepares hydrocarbon system and application thereof | |
| CN103103556B (en) | Tubular ceramic membrane reactor and methanol synthesis method implemented by using same | |
| CN104562075B (en) | A kind of Driven by Solar Energy high-temperature electrolysis CO 2/ H 2o hydrocarbon system and application thereof | |
| Liu et al. | Syngas production: diverse H 2/CO range by regulating carbonates electrolyte composition from CO 2/H 2 O via co-electrolysis in eutectic molten salts | |
| CN111041508A (en) | Cobaltosic oxide array/titanium mesh water decomposition oxygen generation electrode and preparation method thereof | |
| Wang et al. | A coupled electrochemical system for CO2 capture, conversion and product purification | |
| CN107180985A (en) | Low concentration coal-bed gas assisted electrolysis CO2/H2O prepares synthetic gas method and device | |
| JP2001233602A (en) | System for producing hydrogen comprising semiconductor photocatalyst reacting device and electrolytic device | |
| CN104411638A (en) | Gas production device and method | |
| CN108793190B (en) | CO-free 2 Preparation device and preparation method of discharged ammonia gas | |
| CN106048641A (en) | Process method of electrochemically preparing Fe3+ and H2 in pair | |
| CN115924843A (en) | Novel marine mobile low-quality seawater circulating hydrogen production system and working method thereof | |
| CN112760671B (en) | Methanol synthesis method based on mixed ion conductor membrane reactor and application thereof | |
| US4428905A (en) | System for the production of ketene and methylene from limestone utilizing a solid electrolyte electrolysis cell | |
| CN101302630A (en) | Method for preparing metal by means of solid oxide electrolytic cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Cuiqin Inventor after: Wu Hongjun Inventor after: Liu Yue Inventor after: Mao Qianjun Inventor after: Wang Baohui Inventor after: Li Lili Inventor after: Lin Hongyan Inventor before: Wu Hongjun Inventor before: Liu Yue Inventor before: Mao Qianjun Inventor before: Wang Baohui Inventor before: Li Lili Inventor before: Lin Hongyan |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160309 |
|
| RJ01 | Rejection of invention patent application after publication |