CN112138649A - Carbon dioxide thermal catalyst based on transition metal ion doped tungsten oxide and preparation method and application thereof - Google Patents
Carbon dioxide thermal catalyst based on transition metal ion doped tungsten oxide and preparation method and application thereof Download PDFInfo
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- CN112138649A CN112138649A CN202010965997.XA CN202010965997A CN112138649A CN 112138649 A CN112138649 A CN 112138649A CN 202010965997 A CN202010965997 A CN 202010965997A CN 112138649 A CN112138649 A CN 112138649A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 53
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 53
- 229910001428 transition metal ion Inorganic materials 0.000 title claims abstract description 46
- 239000003054 catalyst Substances 0.000 title claims abstract description 38
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910001930 tungsten oxide Inorganic materials 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002243 precursor Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000015556 catabolic process Effects 0.000 claims description 17
- 238000006731 degradation reaction Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 7
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000010248 power generation Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052723 transition metal Inorganic materials 0.000 claims description 3
- 150000003624 transition metals Chemical class 0.000 claims description 3
- 229910003091 WCl6 Inorganic materials 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- -1 rare earth metal ions Chemical class 0.000 description 3
- 229910004664 Cerium(III) chloride Inorganic materials 0.000 description 2
- 229910021580 Cobalt(II) chloride Inorganic materials 0.000 description 2
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 2
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 2
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000011565 manganese chloride Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011858 nanopowder Substances 0.000 description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009919 sequestration Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- YOUIDGQAIILFBW-UHFFFAOYSA-J tetrachlorotungsten Chemical compound Cl[W](Cl)(Cl)Cl YOUIDGQAIILFBW-UHFFFAOYSA-J 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
- C01G41/02—Oxides; Hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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Abstract
The invention provides a carbon dioxide thermal catalyst based on tungsten oxide doped with transition metal ions, and a preparation method and application thereof, and particularly relates to a carbon dioxide thermal catalyst based on tungsten oxide doped with transition metal ions, which is prepared by mixing the transition metal ions into a tungsten oxide precursor ethanol solution and performing high-temperature and high-pressure reaction in one step. The invention fully utilizes the unique hole transmission characteristic of the tungsten oxide and realizes the preparation of the transition metal ion doped tungsten oxide catalyst through high-temperature and high-pressure reaction. The invention increases the concentration of oxygen holes and the concentration of active sites on the surface of the catalyst by doping transition metal ions, improves the catalytic activity of the catalyst on the thermal reduction reaction of carbon dioxide, has the characteristics of simple preparation method, low cost, large combination space of the transition metal ions and the like, and is a universal mode for improving the catalytic activity of the thermal catalyst.
Description
Technical Field
The invention belongs to the field of new material technology and environment protection technology, and particularly relates to a carbon dioxide thermal catalyst based on tungsten oxide doped with transition metal ions, and a preparation method and application thereof.
Background
The sustainable development of global economy depends on fossil energy such as coal, oil and natural gas, and the excessive use of fossil fuel leads to the increasing emission of carbon dioxide. According to the report issued by the international energy agency, the emission of carbon dioxide reaches 330 hundred million tons in 2018, which also leads to the continuous rise of the global temperature. Therefore, carbon emission reduction becomes the key point of strategic development of various energy sources, and has important practical significance and application prospect.
In order to reduce carbon dioxide emission, the development of technologies such as energy conservation, energy efficiency improvement, renewable energy, carbon capture utilization and sequestration and the like is a commonly adopted method at present. But energy conservation or improvement of fossil energy combustion efficiency does not fundamentally eliminate carbon dioxide emissions; compared with thermal power generation, the power generation cost of renewable energy sources such as solar energy, wind energy, water energy and the like is still higher, the popularization rate is lower, and although no carbon is discharged in the use process of the new energy automobile, the new energy automobile still depends on fossil energy from the source; the carbon capture utilization and sequestration technology is still in the beginning stage at present, and all the technologies are still not mature. Therefore, the development of a new technology with low cost and high carbon dioxide emission reduction efficiency and the development of a carbon dioxide thermal catalytic degradation technology have important theoretical significance and practical value.
Disclosure of Invention
The invention aims to provide a carbon dioxide thermal catalyst based on transition metal ion doped tungsten oxide, and a preparation method and application thereof.
In order to realize the purpose of the invention, the invention adopts the following technical scheme to realize:
the invention provides a preparation method of a carbon dioxide thermal catalyst based on tungsten oxide doped with transition metal ions, which comprises the following steps:
(1) and compounding WCl6Ethanol solution;
(2) dissolving a transition metal ion precursor in the WCl prepared in the step (1)6In ethanol solution;
(3) stirring at room temperature to obtain a mixed solution;
(4) reacting the mixed solution prepared in the step (3) at high temperature and high pressure to obtain powder;
(5) and (4) respectively cleaning the powder prepared in the step (4) with absolute ethyl alcohol and deionized water, and drying to prepare the carbon dioxide thermal catalyst based on the transition metal ion doped tungsten oxide.
Further, WCl in the step (1)6The concentration of the ethanol solution is 5 g/L-20 g/L.
Further, the transition metal ion contained in the transition metal ion precursor in the step (2) is Fe3+、Mn2 +、Co2+、Ce3+、Ni2+、Cu2+Or Cu2+。
Further, the concentration of the transition metal ions in the step (2) is 2 mmol/L-20 mmol/L.
Further, in the step (4), the reaction temperature is 150-250 ℃, and the reaction time is 10-30 hours.
Further, the drying temperature in the step (5) is 60-70 ℃, and the drying time is 20-25 hours.
Further, the molecular formula of the tungsten oxide in the step (5) is W18O49。
The invention also provides a carbon dioxide thermal catalyst based on the transition metal ion doped tungsten oxide prepared by the preparation method.
Further, the thermal degradation rate of carbon dioxide of the carbon dioxide thermal catalyst at 200 ℃ is 40-60%, the thermal degradation rate of carbon dioxide at 500 ℃ is 60-70%, and the thermal degradation rate of carbon dioxide at 900 ℃ is 70-80%.
The invention provides an application of the carbon dioxide thermal catalyst based on tungsten oxide doped with transition metal ions in thermal degradation of carbon dioxide generated by automobile exhaust, thermal power generation and heating.
Further, the precursor of the transition metal ion is FeCl3、MnCl2、CoCl2、CeCl3、NiCl2、CuCl2Or ZnCl2One kind of (1).
Further, the concentration of the transition metal ions in the step (2) is 10 mmol/L.
Further, the stirring time in the step (3) is 0.5-1 hour.
Compared with the prior art, the invention has the advantages and the technical effects that:
1. the invention fully utilizes the unique hole transmission characteristic of the tungsten oxide and realizes the preparation of the transition metal ion doped tungsten oxide catalyst through high-temperature and high-pressure reaction. By improving the hole concentration and the surface active site concentration of the tungsten oxide, the high-efficiency adsorption and in-situ catalysis of carbon dioxide are realized, the thermal catalysis efficiency of the carbon dioxide of the transition metal ion doped tungsten oxide catalyst is obviously improved, and the degradation rate of the carbon dioxide is improved to more than 70%.
2. The carbon dioxide thermal catalyst of the invention improves the catalytic activity by doping single transition metal ions, and can also improve the catalytic performance by doping double transition metal ions or rare earth metal ions. In addition, the transition metal ion doped tungsten oxide is prepared by one-step reaction at high temperature and high pressure, the preparation method is simple, and the improvement space is larger. The thermal degradation rate of carbon dioxide of the prepared transition metal ion-doped tungsten oxide catalyst at 200 ℃ is 40-60%, the thermal degradation rate of carbon dioxide at 500 ℃ is 60-70%, and the thermal degradation rate of carbon dioxide at 900 ℃ is 70-80%.
3. Compared with the intrinsic tungsten oxide, the transition metal ion doping adopted by the invention greatly improves the hole concentration and the surface active site concentration, and is vital to the enhancement of the adsorption of carbon dioxide and the improvement of the power process of the thermocatalytic reaction.
Drawings
Fig. 1 shows the thermal catalytic efficiency performance of the tungsten oxide catalyst prepared by the present invention on carbon dioxide before and after doping with different transition metal ions.
Fig. 2 shows the performance of the iron ion doped tungsten oxide catalyst prepared by the invention on the thermal catalytic efficiency of carbon dioxide at different temperatures.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following embodiments.
Example 1
The preparation method of the carbon dioxide thermal catalyst comprises the following steps:
1. tungsten chloride (WCl) with a concentration of 10g/L is prepared6) Ethanol solution;
2. dissolving transition metal ion precursor in WCl prepared in step 16In the ethanol solution, the precursor of the transition metal ion in this embodiment is FeCl3、MnCl2、CoCl2、CeCl3、NiCl2、CuCl2Or ZnCl2The concentration of transition metal ions is 10 mmol/L;
3. stirring the mixed solution prepared in the step 2 at room temperature for 0.5 hour;
4. placing the mixed solution prepared in the step 3 into a high-pressure reaction kettle, and reacting for 15 hours at 200 ℃ to prepare catalyst nano powder;
5. washing the nano powder prepared in the step 4 with absolute ethyl alcohol and deionized water respectively, and then drying for 24 hours at 65 ℃ to prepare the transition metal ion-doped tungsten oxide carbon dioxide thermal catalyst, wherein the molecular formula of the tungsten oxide is W18O49。
By the method, as shown in fig. 1 and fig. 2, the thermal degradation rate of carbon dioxide at 200 ℃ of the obtained thermal catalyst based on the transition metal ion doped tungsten oxide is 40-60%, the thermal degradation rate of carbon dioxide at 500 ℃ is 60-70%, and the thermal degradation rate of carbon dioxide at 900 ℃ is 70-80%. The carbon dioxide thermal catalyst based on the transition metal ion doped tungsten oxide can be applied to thermal degradation of carbon dioxide in automobile exhaust, thermal power generation, heating and the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The preparation method of the carbon dioxide thermal catalyst based on the transition metal ion doped tungsten oxide is characterized by comprising the following steps: the method comprises the following steps:
(1) and compounding WCl6Ethanol solution;
(2) dissolving a transition metal ion precursor in the WCl prepared in the step (1)6In ethanol solution;
(3) stirring at room temperature to obtain a mixed solution;
(4) reacting the mixed solution prepared in the step (3) at high temperature and high pressure to obtain powder;
(5) and (4) respectively cleaning the powder prepared in the step (4) with absolute ethyl alcohol and deionized water, and drying to prepare the carbon dioxide thermal catalyst based on the transition metal ion doped tungsten oxide.
2. The method for preparing the carbon dioxide thermal catalyst based on the tungsten oxide doped with the transition metal ions according to claim 1, wherein the method comprises the following steps: WCl in step (1)6The concentration of the ethanol solution is 5 g/L-20 g/L.
3. The method for preparing the carbon dioxide thermal catalyst based on the tungsten oxide doped with the transition metal ions according to claim 1, wherein the method comprises the following steps: the transition metal ion contained in the transition metal ion precursor in the step (2) is Fe3+、Mn2+、Co2+、Ce3+、Ni2+、Cu2+Or Cu2+。
4. The method for preparing the carbon dioxide thermal catalyst based on the tungsten oxide doped with the transition metal ions according to claim 3, wherein: the concentration of the transition metal ions in the step (2) is 2 mmol/L-20 mmol/L.
5. The method for preparing the carbon dioxide thermal catalyst based on the tungsten oxide doped with the transition metal ions according to claim 1, wherein the method comprises the following steps: the reaction temperature in the step (4) is 150-250 ℃, and the reaction time is 10-30 hours.
6. The method for preparing the carbon dioxide thermal catalyst based on the tungsten oxide doped with the transition metal ions according to claim 1, wherein the method comprises the following steps: the drying temperature in the step (5) is 60-70 ℃, and the drying time is 20-25 hours.
7. The method for preparing the carbon dioxide thermal catalyst based on the transition metal ion doped tungsten oxide according to claim 1, characterized in that: the molecular formula of the tungsten oxide in the step (5) is W18O49。
8. The thermal catalyst for carbon dioxide based on tungsten oxide doped with transition metal ions prepared by the preparation method of any one of claims 1 to 7.
9. The transition metal ion doped tungsten oxide based carbon dioxide thermal catalyst according to claim 8, characterized in that: the thermal degradation rate of the carbon dioxide thermal catalyst at 200 ℃ is 40-60%, the thermal degradation rate of the carbon dioxide at 500 ℃ is 60-70%, and the thermal degradation rate of the carbon dioxide at 900 ℃ is 70-80%.
10. Use of the transition metal ion-doped tungsten oxide-based carbon dioxide thermal catalyst of claim 9 in thermal degradation of carbon dioxide from automobile exhaust, thermal power generation, and heating.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120005789A (en) * | 2010-07-09 | 2012-01-17 | 포항공과대학교 산학협력단 | Cathod catalyst for fuel cell, method of preparing same, and fuel cell system including same |
| CN105749912A (en) * | 2016-03-14 | 2016-07-13 | 中国海洋大学 | Multi-morphology metal-doped W18O49 electrocatalyst and application thereof to hydrogen production by water electrolysis |
| CN109706476A (en) * | 2019-02-28 | 2019-05-03 | 陕西科技大学 | A kind of carbon cloth surfaces growth in situ W18O49The preparation method of self-supporting electrode material |
| CN110681395A (en) * | 2019-10-16 | 2020-01-14 | 武汉工程大学 | Cu with adjustable appearance and size+Doping with W18O49Composite material and preparation method thereof |
| CN111017997A (en) * | 2019-12-24 | 2020-04-17 | 浙江工商大学 | Hollow mesoporous defective tungsten trioxide nanospheres and preparation method and application thereof |
-
2020
- 2020-09-15 CN CN202010965997.XA patent/CN112138649A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120005789A (en) * | 2010-07-09 | 2012-01-17 | 포항공과대학교 산학협력단 | Cathod catalyst for fuel cell, method of preparing same, and fuel cell system including same |
| CN105749912A (en) * | 2016-03-14 | 2016-07-13 | 中国海洋大学 | Multi-morphology metal-doped W18O49 electrocatalyst and application thereof to hydrogen production by water electrolysis |
| CN109706476A (en) * | 2019-02-28 | 2019-05-03 | 陕西科技大学 | A kind of carbon cloth surfaces growth in situ W18O49The preparation method of self-supporting electrode material |
| CN110681395A (en) * | 2019-10-16 | 2020-01-14 | 武汉工程大学 | Cu with adjustable appearance and size+Doping with W18O49Composite material and preparation method thereof |
| CN111017997A (en) * | 2019-12-24 | 2020-04-17 | 浙江工商大学 | Hollow mesoporous defective tungsten trioxide nanospheres and preparation method and application thereof |
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Application publication date: 20201229 |