CN109092288A - A kind of preparation and application of Carbon dioxide electrochemical reduction leypewter catalyst - Google Patents
A kind of preparation and application of Carbon dioxide electrochemical reduction leypewter catalyst Download PDFInfo
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- CN109092288A CN109092288A CN201811016113.5A CN201811016113A CN109092288A CN 109092288 A CN109092288 A CN 109092288A CN 201811016113 A CN201811016113 A CN 201811016113A CN 109092288 A CN109092288 A CN 109092288A
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- carbon dioxide
- catalyst
- electrochemical reduction
- leypewter
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 239000003054 catalyst Substances 0.000 title claims abstract description 60
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 45
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 39
- 229910001074 Lay pewter Inorganic materials 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims abstract description 10
- 238000004070 electrodeposition Methods 0.000 claims abstract description 10
- 239000001509 sodium citrate Substances 0.000 claims abstract description 10
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims abstract description 10
- 239000001119 stannous chloride Substances 0.000 claims abstract description 10
- 235000011150 stannous chloride Nutrition 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000002253 acid Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 claims description 10
- 244000131522 Citrus pyriformis Species 0.000 claims description 8
- 238000000151 deposition Methods 0.000 claims description 8
- 235000005979 Citrus limon Nutrition 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 7
- 229910052708 sodium Inorganic materials 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 240000005809 Prunus persica Species 0.000 claims 1
- 235000006040 Prunus persica var persica Nutrition 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 238000003786 synthesis reaction Methods 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002484 cyclic voltammetry Methods 0.000 abstract description 3
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 240000003273 Passiflora laurifolia Species 0.000 description 5
- 235000013762 Passiflora laurifolia Nutrition 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 description 3
- 239000011736 potassium bicarbonate Substances 0.000 description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 240000007049 Juglans regia Species 0.000 description 2
- 235000009496 Juglans regia Nutrition 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 235000020234 walnut Nutrition 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 238000004832 voltammetry Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/33—Electric or magnetic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/14—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of germanium, tin or lead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/348—Electrochemical processes, e.g. electrochemical deposition or anodisation
-
- 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
- C25B3/00—Electrolytic production of organic compounds
- C25B3/20—Processes
- C25B3/25—Reduction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of preparations of carbon dioxide electrochemical reduction catalyst, the carbon dioxide electrochemical reduction catalyst it is characterized in that, the catalyst is leypewter, the leypewter catalyst is prepared by electro-deposition method, it include: to sequentially add concentrated hydrochloric acid in sodium citrate solution, plumbi nitras, stannous chloride, electro-deposition is carried out in substrate surface using galvanostatic method, it washs and is dried in vacuo, the test of the methods of Electronic Speculum, cyclic voltammetry curve is scanned to obtained leypewter catalyst.The present invention has good catalytic activity to carbon dioxide reduction, required overpotential is lower, gained gaseous product is gas composition, it can directly be produced more using F- T synthesis technology containing carbon products, alloy catalyst preparation method of the invention is simple, convenient for operation, mild condition is easy to industrialized production.
Description
Technical field
The invention belongs to carbon dioxide electrochemical reduction catalyst preparation and application field, in particular to a kind of leypewters
The preparation of catalyst and its application in Carbon dioxide electrochemical reduction.
Background technique
In recent years, CO2 emissions sharply increase, and have aggravated greenhouse effects, cause very big environmental problem, root
According to U.S.National Oceanic and Atmospheric Administration, nearest 2 years officials are announced, and carbon dioxide has been more than in global atmosphere
400ppm becomes today's society focus of attention.CO2It is a kind of C1 resource of potential rich content, other can be reduced into
It containing carbon products, can both alleviate environmental pressure in this way, can also reduce or even replace the use problem of the current energy, one action two
?.However, due to CO2Chemical property it is highly stable, reaction only could occur under given conditions.Electrochemical reduction skill
The development of art provides preferable thinking to solve this problem, the electricity that can be provided by clean energy resourcies such as solar energy, wind energies
It can be by CO2It is converted into valuable chemicals and carbon-containing fuel such as methanol, formic acid, CO etc., and its reaction process has controllably
Property, it is high that a certain selectivity can be generated by conditions such as the type of change electrolyte solution, the type of electrode and application potentials
Or have the product of application value, regulate and control entire reaction process [Chem.Soc.Rev., 43 (2014) 631-675 & 3 (2017)
560-587].Currently, having had many documents that can refer to the research of electrode, monometallic has been applied to electrochemical reduction
CO2, still, participate in reaction and be required to higher overpotential, energy efficiency lower [J.Am.Chem.Soc., 134 (2012)
1986-1989]；Furthermore appearance [the http://dx.doi.org/10.1016/ of alloy catalyst
J.elecom.2017.08.015], good catalytic effect is shown, however, current density is smaller in its reaction process, no
Conducive to industrialized production.Therefore, novel the having CO that high activity, performance are stable, are easy to industrial production applies is developed2Electrochemistry
Reducing catalyst is that have very much research significance.
In view of the above-mentioned problems, in the present invention we be successfully prepared stability is good, overpotential is lower, reduction current density compared with
High, high activity leypewter CO2Electrochemical reduction catalyst, the alloy catalyst preparation method is simple, convenient for operation, condition
Mildly, easy to industrialized production, meanwhile, product directly can obtain more valuableization by F- T synthesis as synthesis gas
Product.
Summary of the invention
Have that overpotential is lower, the higher tin of reduction current density technical problem to be solved by the invention is to provide one kind
Metal catalyst and preparation method thereof and the application in Carbon dioxide electrochemical reduction.The catalyst passes through electro-deposition side
Method is prepared, and such as deposits liquid concentration of component, size of current by effectively changing reaction condition, obtaining has high-specific surface area
Leypewter catalyst, can effectively reduce overpotential during carbon dioxide reduction, increase reduction current density, produce simultaneously
Contain hydrogen and carbon monoxide in object, can be used as synthesis gas and carry out producing other valuable hydrocarbons.
The preparation method of the carbon dioxide electrochemical reduction catalyst characterized by comprising sodium citrate is molten
Sodium citrate solution is prepared in deionized water, after salt acid for adjusting pH, then plumbi nitras and protochloride is added in acquired solution
Tin is passed through different electric currents and carries out galvanostatic deposition in substrate, after reaction, deposited samples is washed and is dried in vacuo,
Obtain micron order " walnut kernel " shape Carbon dioxide electrochemical reduction leypewter catalyst.
Preferably, the concentration of the sodium citrate is 0.01~0.015M.
Preferably, the hydrochloric acid is concentrated hydrochloric acid, and the pH after adjusting is 2~3.
Preferably, the stannous chloride solution concentration is 0.01M, the concentration of plumbi nitras with the concentration of stannous chloride press than
Example is added, and wherein tin-lead ion concentration ratio range is 1:1~3:1.
Preferably, the galvanostatic deposition method, the size of applied current are respectively 10,15,20mA, and the reaction time is
10min。
Preferably, the substrate is foam copper.
Preferably, the washing is to adopt to be washed with deionized to neutrality.
Using three-electrode system, using leypewter catalyst prepared by the present invention as working electrode, platinum guaze (2 × 2cm) is
To electrode, Ag/AgCl is reference electrode, closed H-type electrolytic cell, and reaction solution is the potassium bicarbonate solution of 0.5mol/L, circulation
The work potential range of voltammetry test is -2.0~0.5V, sweep speed 0.05V/s, using permanent electricity in electrolytic process
40C, selecting potential is respectively -1.9V, -1.8V, -1.7V, -1.6V, -1.5V, and reaction carries out at normal temperatures and pressures.
Beneficial effects of the present invention are as follows.
(1) present invention is leypewter catalyst, is prepared by electrochemical deposition method, while optimizing in the process
The preparation condition of catalyst obtains this alloy catalyst, CO can be effectively reduced2The overpotential of electrochemical reduction improves reduction
Current density.
(2) preparation method of the present invention is simple, and convenient for operation, mild condition is easy to industrialized production, meanwhile, product conduct
Synthesis gas directly can go out more valuable chemicals by F- T synthesis.The invention is in terms of Carbon dioxide electrochemical reduction
There is fabulous application prospect.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph of the leypewter catalyst working electrode in the embodiment of the present invention 4.
Fig. 2 and Fig. 3 is leypewter catalyst in the embodiment of the present invention 2,5 respectively in high pure nitrogen and saturation dioxy
Change the cyclic voltammetry curve in the potassium bicarbonate aqueous solution of the 0.5mol/L of carbon.
Fig. 4, Fig. 5 and Fig. 6 are the leypewter catalyst working electrode in the embodiment of the present invention 1,3,4 respectively, full
With the faradic efficiency of electrolysate in the potassium bicarbonate aqueous solution of the 0.5mol/L of carbon dioxide.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this
It invents rather than limits the scope of the invention.In addition, those skilled in the art can make various changes and be repaired to the present invention
Change, these equivalent forms also fall within the scope of the appended claims of the present application.
Embodiment 1
A kind of carbon dioxide electrochemical reduction catalyst, including the leypewter catalyst prepared by electro-deposition method.Described
Carbon dioxide electrochemical reduction catalyst the preparation method comprises the following steps: sodium citrate to be dissolved in the lemon for being configured to 0.01M in deionized water
Lemon acid sodium solution, addition stannous chloride and plumbi nitras, concentration are all after concentrated hydrochloric acid adjusting pH to 2, then in acquired solution
0.01M, tin-lead ratio are 1:1, carry out galvanostatic deposition under 15 mA electric currents, and after reaction time 10min, deposited samples are washed 3
It is secondary and 50 DEG C be dried in vacuo, obtain leypewter carbon dioxide electrochemical reduction catalyst.
Embodiment 2
A kind of carbon dioxide electrochemical reduction catalyst, including the leypewter catalyst prepared by electro-deposition method.Described
Carbon dioxide electrochemical reduction catalyst the preparation method comprises the following steps: sodium citrate to be dissolved in the lemon for being configured to 0.01M in deionized water
Lemon acid sodium solution, addition stannous chloride and plumbi nitras, concentration are respectively after concentrated hydrochloric acid adjusting pH to 2, then in acquired solution
0.01M and 0.005M, tin-lead ratio are 2:1, carry out galvanostatic deposition under 15 mA electric currents, after reaction time 10min, will be deposited
Sample is washed 3 times and is dried in vacuo at 50 DEG C, obtains leypewter carbon dioxide electrochemical reduction catalyst.
Embodiment 3
A kind of carbon dioxide electrochemical reduction catalyst, including the leypewter catalyst prepared by electro-deposition method.Described
Carbon dioxide electrochemical reduction catalyst the preparation method comprises the following steps: sodium citrate to be dissolved in the lemon for being configured to 0.01M in deionized water
Lemon acid sodium solution, addition stannous chloride and plumbi nitras, concentration are respectively after concentrated hydrochloric acid adjusting pH to 2, then in acquired solution
0.01M and 0.004M, tin-lead ratio are 5:2, carry out galvanostatic deposition under 20 mA electric currents, after reaction time 10min, will be deposited
Sample is washed 3 times and is dried in vacuo at 50 DEG C, obtains leypewter carbon dioxide electrochemical reduction catalyst.
Embodiment 4
A kind of carbon dioxide electrochemical reduction catalyst, including the leypewter catalyst prepared by electro-deposition method.Described
Carbon dioxide electrochemical reduction catalyst the preparation method comprises the following steps: sodium citrate to be dissolved in the lemon for being configured to 0.01M in deionized water
Lemon acid sodium solution, addition stannous chloride and plumbi nitras, concentration are respectively after concentrated hydrochloric acid adjusting pH to 2, then in acquired solution
0.01M and 0.0033M, tin-lead ratio are 3:1, carry out galvanostatic deposition under 20 mA electric currents, after reaction time 10min, will be deposited
Sample is washed 3 times and is dried in vacuo at 50 DEG C, obtains leypewter carbon dioxide electrochemical reduction catalyst.
Embodiment 5
A kind of carbon dioxide electrochemical reduction catalyst, including the leypewter catalyst prepared by electro-deposition method.Described
Carbon dioxide electrochemical reduction catalyst the preparation method comprises the following steps: sodium citrate to be dissolved in the lemon for being configured to 0.01M in deionized water
Lemon acid sodium solution, addition stannous chloride and plumbi nitras, concentration are respectively after concentrated hydrochloric acid adjusting pH to 2, then in acquired solution
0.01M and 0.02M, tin-lead ratio are 1:2, carry out galvanostatic deposition under 10 mA electric currents, after reaction time 10min, will deposit sample
Product are washed 3 times and are dried in vacuo at 50 DEG C, obtain leypewter carbon dioxide electrochemical reduction catalyst.
Attached drawing 1 is the field emission scanning electron microscope figure of leypewter catalyst prepared by embodiment 4, as seen from the figure, the condition
The catalyst of lower preparation is micron order, has " walnut kernel " shape pattern.
Attached drawing 2,3 is the cyclic voltammetry scan figure under normal temperature and pressure, and electro-chemical test is in Princeton electrochemical workstation
It carries out.Fig. 2 is the leypewter catalyst for preparing under the conditions of embodiment 2, and Fig. 3 is the leypewter prepared under the conditions of embodiment 5
Catalyst, comparison it is found that embodiment 2 in claim than claim outside embodiment 5 there is better carbon dioxide electricity
Electronation performance, and have bigger reduction current density.
The leypewter catalyst prepared under the conditions of the respectively embodiment 1,3,4 of attached drawing 4,5 and 6 is electrolysed under different potentials
Product faradic efficiency figure.By three group pictures it is found that when tin-lead ratio is 1:1, in the case where electroaffinity is -1.7V, carbon dioxide
Reduction efficiency highest, and product CO and H2It can be used as synthesis gas to continue to be utilized；When tin-lead ratio be 3:1 when, electroaffinity be-
Under 1.9V, CO and H2Ratio reaches 1:3；When tin-lead ratio is 3:1, in the case where electroaffinity is -1.9V, CO and H2Ratio reaches 1:
1.Three embodiments in claim show good application prospect, and product can generate moreization as synthesis gas
Product.
Claims (7)
1. a kind of carbon dioxide electrochemical reduction catalyst, which is characterized in that including the micron order " core prepared by electro-deposition method
Peach kernel " shape leypewter catalyst.
2. the preparation method of carbon dioxide electrochemical reduction catalyst described in claim 1 characterized by comprising by lemon
Lemon acid sodium, which is dissolved in deionized water, prepares sodium citrate solution, after salt acid for adjusting pH, then plumbi nitras is added in acquired solution
And stannous chloride, be passed through different electric currents and carry out galvanostatic deposition in substrate, after reaction, by deposited samples washing and it is true
Sky is dry, obtains Carbon dioxide electrochemical reduction leypewter catalyst.
3. the preparation method of carbon dioxide electrochemical reduction catalyst as claimed in claim 2, which is characterized in that the lemon
The concentration of lemon acid sodium solution is 0.01~0.015M.
4. the preparation method of carbon dioxide electrochemical reduction catalyst as claimed in claim 2, which is characterized in that the salt
Acid is concentrated hydrochloric acid, and the pH after adjusting is 2~3.
5. the preparation method of carbon dioxide electrochemical reduction catalyst as claimed in claim 2, which is characterized in that the chlorine
Change stannous solution concentration is 0.01M, and the concentration of plumbi nitras is proportionally added into the concentration of stannous chloride, wherein tin-lead ion concentration
Proportional region is 1:1~3:1.
6. the preparation method of carbon dioxide electrochemical reduction catalyst as claimed in claim 2, which is characterized in that the perseverance
Current deposits method, the size of applied current are respectively 10,15,20mA, reaction time 10min.
7. the preparation method of carbon dioxide electrochemical reduction catalyst as claimed in claim 2, which is characterized in that the base
Bottom is foam copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811016113.5A CN109092288A (en) | 2018-09-02 | 2018-09-02 | A kind of preparation and application of Carbon dioxide electrochemical reduction leypewter catalyst |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811016113.5A CN109092288A (en) | 2018-09-02 | 2018-09-02 | A kind of preparation and application of Carbon dioxide electrochemical reduction leypewter catalyst |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860294A (en) * | 2019-11-27 | 2020-03-06 | 河北科技大学 | Preparation method of copper-lead composite metal catalyst and application of copper-lead composite metal catalyst |
| CN111519207A (en) * | 2020-05-19 | 2020-08-11 | 大连大学 | Preparation and application of Sn electrode for electrochemical reduction of carbon dioxide |
| CN111790371A (en) * | 2020-08-12 | 2020-10-20 | 南京大学 | Preparation method and application of bimetallic catalyst |
-
2018
- 2018-09-02 CN CN201811016113.5A patent/CN109092288A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860294A (en) * | 2019-11-27 | 2020-03-06 | 河北科技大学 | Preparation method of copper-lead composite metal catalyst and application of copper-lead composite metal catalyst |
| CN110860294B (en) * | 2019-11-27 | 2022-10-25 | 河北科技大学 | Method for preparing formic acid by electrochemical reduction reaction of carbon dioxide by using copper-lead composite metal as electrode |
| CN111519207A (en) * | 2020-05-19 | 2020-08-11 | 大连大学 | Preparation and application of Sn electrode for electrochemical reduction of carbon dioxide |
| CN111519207B (en) * | 2020-05-19 | 2021-06-29 | 大连大学 | Preparation and application of Sn electrode for electrochemical reduction of carbon dioxide |
| CN111790371A (en) * | 2020-08-12 | 2020-10-20 | 南京大学 | Preparation method and application of bimetallic catalyst |
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Application publication date: 20181228 |