CN107528070A - The preparation method of cerium oxide bacteria cellulose supported palladium base fuel battery catalyst - Google Patents

The preparation method of cerium oxide bacteria cellulose supported palladium base fuel battery catalyst Download PDF

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CN107528070A
CN107528070A CN201710459144.7A CN201710459144A CN107528070A CN 107528070 A CN107528070 A CN 107528070A CN 201710459144 A CN201710459144 A CN 201710459144A CN 107528070 A CN107528070 A CN 107528070A
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bacteria cellulose
cerium oxide
catalyst
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温翠莲
姚劲毅
洪云
张腾
萨百晟
魏颖
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Fuzhou University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/88—Processes of manufacture
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Engineering & Computer Science (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
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Abstract

The invention discloses a kind of preparation method of cerium oxide bacteria cellulose supported palladium base fuel battery catalyst, belong to fuel cell catalyst technical field of material.By CeCl3·7H2O and the bacteria cellulose fully dispersed stirring soluble in water Jing Guo pre-treatment, drying and calcination obtain cerium oxide bacteria cellulose carrier, then add in chlorine palladium acid solution and be sufficiently stirred, by liquid phase reduction supported palladium nano-catalyst particles, obtain palladium base fuel-cell catalyst.The compound dispersiveness for significantly improving palladium particle of cerium oxide and bacteria cellulose, the palladium catalyst particle diameter of acquisition is small, so as to improve catalytic activity and stability of the catalyst to alcohols.Preparing raw material of the present invention is simple and easy to get, process stabilizing, has industrialization prospect.

Description

The preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst
Technical field
The invention belongs to fuel cell catalyst technical field of material, and in particular to a kind of cerium oxide-bacteria cellulose The preparation method of supported palladium base fuel battery catalyst.
Background technology
Proton Exchange Membrane Fuel Cells (PEMFC) is a kind of using sulfonic acid proton exchange film as solid electrolyte, in isothermal Under the conditions of chemical energy is directly converted into the TRT of electric energy, because not limited by Carnot cycle, there is energy conversion efficiency It is height, noiseless, the advantages that pollution-free, corrosion-free, operating temperature is low, cold start-up is fast, long lifespan and specific power are high, current to solving The energy crisis and problem of environmental pollution that we are faced are significant.
Catalyst is one of critical material in fuel cell, and the cost of catalyst accounts for the 1/3 of fuel cell cost, to combustion The commercialization of material battery plays vital effect.Platinum is proved to be the optimum catalyst activearm for low-temperature fuel cell Point, but use platinum there is also following serious problems as fuel-cell catalyst：（1）Platinum scarcity of resources；（2）It is expensive；（3） Poison resistance is poor.Platinum is one of several metals most rare on the earth.Therefore seek cheap and there is good stability energy Catalyst turn into electrode catalyst research main target.In order to reduce the cost of fuel cell, it is necessary to platinum carrying capacity is reduced, Develop low platinum or even non-platinum elctro-catalyst.
At present, the research of non-platinum catalyst, catalyst mainly is prepared using palladium base or other base and doped metals of ruthenium, in recent years Come, researcher is prepared for the palladium-based catalyst of various active component high degree of dispersion with a variety of methods.Palladium-based catalyst compares platinum Cheaply, resource reserve enriches, but its still there is it is serious the shortcomings that, during such as palladium as catalyst, during electro-catalysis, by Easily make catalyst poisoning in intermediate product CO caused by fuel incomplete oxidation, so as to reduce catalytic activity.
Transition metal oxide has stronger chemical stability and electrochemical stability, organic small in formic acid, methanol etc. Among the oxidizing process of molecule, the resistance to overturning of catalyst material can be lifted, reduces the loss of electrochemical surface area.Receive Rice cerium oxide（CeO2）A kind of unique rare earth oxide, have excellent catalytic activity, good heat endurance and Chemical stability and electronics, Lacking oxygen transmission capacity.CeO2Complicated interaction between noble metal be present, it is this mutual Act on and the catalytic performance of composite catalyst is had a major impact.
Bacteria cellulose due to possessing ultra-fine three-dimensional net structure, by diameter 3-4 nm microfibre by intramolecular and Intermolecular oxygen key acts on and winds and be combined into the thick fibre bundles of 40-60 nm, and is intertwined to form hyperfine three dimensions Network structure.Substantial amounts of nanoscale pore-size distribution, big specific surface area and abundant surface hydroxyl groups disclosure satisfy that fuel The requirement of cell catalyst carrier.
The content of the invention
The problem of it is an object of the invention to be reduced for existing fuel-cell catalyst CO poisonings and activity, there is provided a kind of The preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.Pass through both cerium oxide and bacteria cellulose Synergy, dispersiveness and particle diameter of the palladium nano-catalyst particles in carrier surface can be significantly improved, and then improve it and urge Change performance.
For achieving the above object, the present invention is implemented by following technical solution：
A kind of preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, specifically includes following steps：
（1）The bacteria cellulose film of bulk is added in sodium hydroxide solution, the water bath processing under 358 K；Water bath processing finishes Afterwards, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then bacteria cellulose film is put into and pre- is cooled to -12 DEG C NaOH-CO(NH2)2-H2In O mixed solutions, strong stirring to block bacteria cellulose all dissolves, that is, obtains transparent bacterium Cellulose solution；
（2）By CeCl3·7H2O and step（1）After processing bacteria cellulose mixing ultrasound 0.5 ~ 5 hour it is fully dispersed, then Continue magnetic agitation 0.5 ~ 8 hour, then 2 mol/LHCl solution are added dropwise to make pH value in neutrality, it is cold finally by centrifuge washing Lyophilized dry solid powder；
（3）By step（2）Obtained solid powder is positioned over tube furnace, and 300 ~ 500 DEG C are warming up in protective gas atmosphere, protects Temperature 0.5 ~ 8 hour, obtains cerium oxide-bacteria cellulose complex carrier；
（4）Cerium oxide-bacteria cellulose complex carrier is added in chlorine palladium acid solution and is stirred by ultrasonic 0.5 ~ 6 hour, obtains mixed liquor；
（5）Mixed liquor is slowly added dropwise into reductant solution, at room temperature magnetic agitation 1 ~ 10 hour, centrifuge washing is dried Obtain cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.
Step（1）Described in the concentration of sodium hydroxide solution be 0.3 ~ 2.5wt%, water-curing treatment duration is 0.5-5 hours, NaOH-CO(NH2)2-H2NaOH, CO (NH in O mixed solutions2)2And H2O mass ratio is 7:12:81.
Step（2）Described in CeCl3·7H2The mass ratio of O and bacteria cellulose is 1:5~5:1.
Step（3）Described in protective gas be nitrogen, argon gas and hydrogen in one or more.
Step（4）The mol ratio of cerium and palladium element in middle mixed liquor is 1:3~3:1.
Step（4）Described in the concentration of chlorine palladium acid solution be 10 ~ 50 mmol/L；Step（5）Described in reductant solution be NaBH4The aqueous solution, concentration are 0.1 ~ 0.5 mol/L；Step（5）The volume ratio 1 of middle mixed liquor and reductant solution:1, centrifugation is washed The solvent washed is absolute ethyl alcohol or water.
Cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst made from a kind of preparation method as described above.
The remarkable advantage of the present invention is：
The present invention is compound as catalyst carrier using cerium oxide and bacteria cellulose material, when loading palladium nano-particles, can show The dispersiveness for improving palladium nano-catalyst particles on carrier is write, the palladium nanometer of size uniform is obtained in combination with liquid phase reduction Particle, there is higher catalytic activity to Aalcohols fuels such as ethanol and methanol.Raw material of the present invention is simple and easy to get, and preparation technology is steady It is fixed, there is industrialization prospect.
Brief description of the drawings
Fig. 1 is the TEM patterns that cerium oxide-bacteria cellulose prepared by the embodiment of the present invention 1 loads palladium-based catalyst；
Fig. 2 is single bacteria cellulose（There is no cerium oxide in carrier）Load the TEM patterns of palladium-based catalyst.
Embodiment
The present invention provides a kind of preparation method of cerium oxide-bacteria cellulose fuel-cell catalyst carrier, to make this hair Bright purpose, technical scheme and effect are clearer, clear and definite, and with reference to specific embodiment, the present invention is expanded on further.Ying Li Solution, these embodiments are only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it is to be understood that reading this hair After the content of bright instruction, those skilled in the art can make various changes or modifications to the present invention, and these equivalent form of values are same Fall within the application appended claims limited range.
Embodiment 1
A kind of preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, is concretely comprised the following steps：
（1）The bacteria cellulose film of bulk is added in the sodium hydroxide solution of mass percent concentration 0.3% and boiled, under 358 K Water bath processing 5 hours；After water bath processing, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then by bacterium Cellulose membrane is put into mass percent as 7:12:81st, the pre- NaOH-CO (NH for being cooled to -12 DEG C2)2-H2In O mixed solutions, strength Stirring is all dissolved to block bacteria cellulose, that is, obtains transparent bacterial cellulose solution；
（2）By CeCl3·7H2O and step（1）Bacterial cellulose solution in mass ratio 1 after processing:5 mixing ultrasounds 0.5 are small When, make its fully dispersed, continue thereafter with magnetic agitation 8 hours, then 2 mol/LHCl solution, which are added dropwise, makes pH value be in neutrality, most Solid powder is freeze-dried to obtain by ethanol centrifuge washing afterwards；
（3）By step（2）Obtained solid powder is positioned in tube furnace, 300 DEG C is warming up in protective gas atmosphere, insulation 8 hours, obtain cerium oxide-bacteria cellulose complex carrier；
（4）It is then 1 according to the mol ratio of cerium and palladium element:3 add cerium oxide-bacteria cellulose carrier to 10 mmol/L It is stirred by ultrasonic 0.5 hour in chlorine palladium acid solution；
（5）By reducing agent NaBH4The reductant solution that solution concentration is 0.1 mol/L is obtained after being dissolved in water, is by volume 1:1 Step is slowly added dropwise into reductant solution（4）The solution of gained, magnetic agitation 1 hour, washes centrifugal drying at room temperature Obtain cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.
Gained catalyst is 19 mAcm to the specific activity of alcohol catalysis-2, continuous operation 12 hours（65 DEG C, 0.65V）'s Attenuation rate is only 12%.
Embodiment 2
A kind of preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, is concretely comprised the following steps：
（1）The bacteria cellulose film of bulk is added in the sodium hydroxide solution of mass percent concentration 1.0%, the water-bath under 358 K Processing 4 hours；After water bath processing, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then by bacterial fibers Plain film is put into mass percent as 7:12:81st, the pre- NaOH-CO (NH for being cooled to -12 DEG C2)2-H2In O mixed solutions, strong stirring All dissolved to block bacteria cellulose, that is, obtain transparent bacterial cellulose solution；
（2）By CeCl3·7H2O and step（1）Bacterial cellulose solution in mass ratio 5 after processing:1 mixing ultrasound 1 hour, Make its fully dispersed, continue thereafter with magnetic agitation 6 hours, then 2 mol/L HCl solutions, which are added dropwise, makes pH value be in neutrality, finally Solid powder is freeze-dried to obtain by deionized water centrifuge washing；
（3）By step（2）Obtained solid powder is positioned in tube furnace, 350 DEG C is warming up in protective gas atmosphere, insulation 6 hours, obtain cerium oxide-bacteria cellulose complex carrier；
（4）It is then 3 according to the mol ratio of cerium and palladium element:1 adds cerium oxide-bacteria cellulose complex carrier to 20 It is stirred by ultrasonic 2 hours in mmol/L chlorine palladium acid solutions；
（5）By reducing agent NaBH4The reductant solution that solution concentration is 0.2 mol/L is obtained after being dissolved in water, is by volume 1:1 Step is slowly added dropwise into reductant solution（4）The solution of gained, magnetic agitation 2 hours, wash centrifugal drying at room temperature Obtain cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.
Gained catalyst is 15 mAcm to the specific activity of alcohol catalysis-2, continuous operation 12 hours（65 DEG C, 0.65V）'s Attenuation rate is only 12%.
Embodiment 3
A kind of preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, is concretely comprised the following steps：
（1）The bacteria cellulose film of bulk is added in the sodium hydroxide solution of mass percent concentration 2.5%, the water-bath under 358 K Processing 2 hours；After water bath processing, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then by bacterial fibers Plain film is put into mass percent as 7:12:81st, the pre- NaOH-CO (NH for being cooled to -12 DEG C2)2-H2In O mixed solutions, strong stirring All dissolved to block bacteria cellulose, that is, obtain transparent bacterial cellulose solution；
（2）By CeCl3·7H2O and step（1）Bacterial cellulose solution in mass ratio 2 after processing:3 mixing ultrasounds 3 hours, Make its fully dispersed, continue thereafter with magnetic agitation 4 hours, then be added dropwise 2 mol/L HCl solution make pH value in neutrality, most Solid powder is freeze-dried to obtain by deionized water centrifuge washing afterwards；
（3）By step（2）Obtained solid powder is positioned in tube furnace, 400 DEG C is warming up in protective gas atmosphere, insulation 6 hours, obtain cerium oxide-bacteria cellulose complex carrier；
（4）It is then 1 according to the mol ratio of cerium and palladium element:1 adds cerium oxide-bacteria cellulose complex carrier to 30 It is stirred by ultrasonic 3 hours in mmol/L chlorine palladium acid solutions；
（5）By reducing agent NaBH4The reductant solution that solution concentration is 0.3 mol/L is obtained after being dissolved in water, is by volume 1:1 Step is slowly added dropwise into reductant solution（4）The solution of gained, at room temperature magnetic agitation 4 hours, ethanol cleaning centrifuge It is dried to obtain cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.
Gained catalyst is 16 mAcm to the specific activity of alcohol catalysis-2, continuous operation 12 hours（65 DEG C, 0.65V）'s Attenuation rate is only 13%.
Embodiment 4
A kind of preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, is concretely comprised the following steps：
（1）The bacteria cellulose film of bulk is added in the sodium hydroxide solution of mass percent concentration 1.5%, the water-bath under 358 K Processing 1 hour；After water bath processing, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then by bacterial fibers Plain film is put into mass percent as 7:12:81st, the pre- NaOH-CO (NH for being cooled to -12 DEG C2)2-H2In O mixed solutions, strong stirring All dissolved to block bacteria cellulose, that is, obtain transparent bacterial cellulose solution；
（2）By CeCl3·7H2O and step（1）Bacterial cellulose solution in mass ratio 3 after processing:2 mixing ultrasounds 4 hours, Make its fully dispersed, continue thereafter with magnetic agitation 2 hours, then be added dropwise 2 mol/L HCl solution make pH value in neutrality, most Solid powder is freeze-dried to obtain by ethanol centrifuge washing afterwards；
（3）By step（2）Obtained solid powder is positioned in tube furnace, 350 DEG C is warming up in protective gas atmosphere, insulation 6 hours, obtain cerium oxide-bacteria cellulose complex carrier；
（4）It is then 1 according to the mol ratio of cerium and palladium element:1 adds cerium oxide-bacteria cellulose complex carrier to 40 It is stirred by ultrasonic 4 hours in mmol/L chlorine palladium acid solutions；
（5）By reducing agent NaBH4The reductant solution that solution concentration is 0.4 mol/L is obtained after being dissolved in water, is by volume 1:1 Step is slowly added dropwise into reductant solution（4）The solution of gained, at room temperature magnetic agitation 8 hours, ethanol cleaning centrifuge It is dried to obtain cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.
Gained catalyst is 18 mAcm to the specific activity of alcohol catalysis-2, continuous operation 12 hours（65 DEG C, 0.65V）'s Attenuation rate is only 11%.
Embodiment 5
A kind of preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, is concretely comprised the following steps：
（1）The bacteria cellulose film of bulk is added in the sodium hydroxide solution of mass percent concentration 2.0%, the water-bath under 358 K Processing 0.5 hour；After water bath processing, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then it is bacterium is fine Tie up plain film and be put into mass percent as 7:12:81st, the pre- NaOH-CO (NH for being cooled to -12 DEG C2)2-H2In O mixed solutions, strongly stir Mix to block bacteria cellulose and all dissolve, that is, obtain transparent bacterial cellulose solution；
（2）By CeCl3·7H2O and step（1）Bacterial cellulose solution in mass ratio 4 after processing:1 mixing ultrasound 5 hours, Make its fully dispersed, continue thereafter with magnetic agitation 0.5 hour, then be added dropwise 2 mol/L HCl solution make pH value in neutrality, Solid powder is freeze-dried to obtain finally by ethanol centrifuge washing；
（3）By step（2）Obtained solid powder is positioned in tube furnace, 500 DEG C is warming up in protective gas atmosphere, insulation 0.5 hour, obtain cerium oxide-bacteria cellulose complex carrier；
（4）It is then 1 according to the mol ratio of cerium and palladium element:1 adds cerium oxide-bacteria cellulose complex carrier to 50 It is stirred by ultrasonic 6 hours in mmol/L chlorine palladium acid solutions；
（5）By reducing agent NaBH4The reductant solution that solution concentration is 0.5 mol/L is obtained after being dissolved in water, is by volume 1:1 Step is slowly added dropwise into reductant solution（4）The solution of gained, at room temperature magnetic agitation 10 hours, ethanol cleaning centrifuge It is dried to obtain cerium oxide-bacteria cellulose composite load palladium base fuel-cell catalyst.
Gained catalyst is 18 mAcm to the specific activity of alcohol catalysis-2, continuous operation 12 hours（65 DEG C, 0.65V）'s Attenuation rate is only 9%.
Fig. 1 is the TEM patterns of cerium oxide-bacteria cellulose composite load palladium-based catalyst prepared by the embodiment of the present invention 1, Fig. 2 is single bacteria cellulose（There is no cerium oxide in carrier）Load the TEM patterns of palladium-based catalyst.Can from Fig. 1 and Fig. 2 To find out, two kinds of carrier loaded palladium-based catalysts can preferably disperse, while the grain shape of catalyst all compares rule Then.Comparison diagram 1 and Fig. 2 are understood, fine by cerium oxide and bacterium compared to catalyst of the single bacteria cellulose as carrier The particle of the plain compound palladium-based catalyst as carrier of dimension is scattered more preferable, and almost without agglomeration, while the granularity of palladium is more It is small, the nm of average grain diameter about 3.3, and catalyst of the single bacteria cellulose as carrier, palladium particle have part reunion, put down simultaneously Equal particle diameter is about 6.7 nm.Illustrate, by the compound action of cerium oxide and bacteria cellulose, can further improve palladium base fuel The dispersiveness and particle diameter of cell catalyst, be advantageous to improve the catalytic activity of catalyst.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with Modification, it should all belong to the covering scope of the present invention.

Claims (8)

  1. A kind of 1. preparation method of cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst, it is characterised in that：Including with Lower step：
    （1）The bacteria cellulose film of bulk is added in sodium hydroxide solution, the water bath processing under 358 K；Water bath processing finishes Afterwards, rinsed repeatedly with a large amount of deionized waters, until pH value is in neutrality；Then bacteria cellulose film is put into and pre- is cooled to -12 DEG C NaOH-CO(NH2)2-H2In O mixed solutions, strong stirring to block bacteria cellulose all dissolves, that is, obtains transparent bacterium Cellulose solution；
    （2）By CeCl3·7H2O and step（1）Bacterial cellulose solution mixing ultrasound after processing 0.5 ~ 5 hour, makes its abundant It is scattered, continue thereafter with magnetic agitation 0.5 ~ 8 hour, then 2 mol/LHCl solution, which are added dropwise, makes dispersion liquid pH value be in neutrality, most Solid powder is freeze-dried to obtain by centrifuge washing afterwards；
    （3）By step（2）Obtained solid powder is positioned in tube furnace, and 300 ~ 500 DEG C are warming up in protective gas atmosphere, Insulation 0.5 ~ 8 hour, obtains cerium oxide-bacteria cellulose complex carrier；
    （4）Then cerium oxide-bacteria cellulose complex carrier is added in chlorine palladium acid solution and is stirred by ultrasonic 0.5 ~ 6 hour, is obtained mixed Close liquid；
    （5）Step is slowly added dropwise into reductant solution（4）The mixed liquor of gained, magnetic agitation 1 ~ 10 hour at room temperature, Centrifuge washing is dried to obtain cerium oxide-bacteria cellulose supported palladium base fuel battery catalyst.
  2. 2. the preparation method of cerium oxide according to claim 1-bacteria cellulose supported palladium base fuel battery catalyst, its It is characterised by：Step（1）In, the concentration of sodium hydroxide solution is 0.3 ~ 2.5wt%, and water-curing treatment duration is 0.5-5 hours, NaOH-CO(NH2)2-H2NaOH, CO (NH in O mixed solutions2)2And H2O mass ratio is 7:12:81.
  3. 3. the preparation method of cerium oxide according to claim 1-bacteria cellulose supported palladium base fuel battery catalyst, its It is characterised by：Step（2）In, CeCl3·7H2The mass ratio of O and bacteria cellulose is 1:5~5:1.
  4. 4. the preparation method of cerium oxide according to claim 1-bacteria cellulose supported palladium base fuel battery catalyst, its It is characterised by：Step（3）Described in protective gas be nitrogen, argon gas and hydrogen in one or more.
  5. 5. the preparation method of cerium oxide according to claim 1-bacteria cellulose supported palladium base fuel battery catalyst, its It is characterised by：Step（4）Described in mixed liquor the mol ratio of cerium and palladium element be 1:3~3:1.
  6. 6. the preparation method of cerium oxide according to claim 1-bacteria cellulose supported palladium base fuel battery catalyst, its It is characterised by：Step（4）Described in the concentration of chlorine palladium acid solution be 10 ~ 50 mmol/L；Step（5）Described in reductant solution For 0.1 ~ 0.5 mol/L NaBH4Solution, step（4）The mixed liquor of gained and the volume ratio of reductant solution are 1:1.
  7. 7. the preparation method of cerium oxide according to claim 1-bacteria cellulose supported palladium base fuel battery catalyst, its It is characterised by：The step（5）In the solvent that uses of centrifuge washing for absolute ethyl alcohol or water.
  8. A kind of 8. cerium oxide made from preparation method as described in claim any one of 1-7-bacteria cellulose load palladium base combustion Expect cell catalyst.
CN201710459144.7A 2017-06-16 2017-06-16 The preparation method of cerium oxide bacteria cellulose supported palladium base fuel battery catalyst Withdrawn CN107528070A (en)

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CN111244480A (en) * 2020-01-21 2020-06-05 福建卓翼能源科技发展有限公司 Carbon-supported palladium-based alloy fuel cell membrane electrode and preparation method thereof
CN112076731A (en) * 2020-08-31 2020-12-15 镇江市高等专科学校 Loaded with nano CeO2Preparation method of particle composite biomass membrane and application of particle composite biomass membrane in tellurium extraction
CN112619681A (en) * 2020-12-08 2021-04-09 连云港师范高等专科学校 Nitrogen-doped carbonized bacterial cellulose supported palladium catalyst and preparation method and application thereof

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CN106784897A (en) * 2017-01-18 2017-05-31 福州大学 A kind of preparation method of anode of fuel cell Pd/CNTs nanocatalysts

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111244480A (en) * 2020-01-21 2020-06-05 福建卓翼能源科技发展有限公司 Carbon-supported palladium-based alloy fuel cell membrane electrode and preparation method thereof
CN111244480B (en) * 2020-01-21 2022-05-24 福建卓翼能源科技发展有限公司 Carbon-supported palladium-based alloy fuel cell membrane electrode and preparation method thereof
CN112076731A (en) * 2020-08-31 2020-12-15 镇江市高等专科学校 Loaded with nano CeO2Preparation method of particle composite biomass membrane and application of particle composite biomass membrane in tellurium extraction
CN112619681A (en) * 2020-12-08 2021-04-09 连云港师范高等专科学校 Nitrogen-doped carbonized bacterial cellulose supported palladium catalyst and preparation method and application thereof
CN112619681B (en) * 2020-12-08 2022-12-23 连云港师范高等专科学校 Nitrogen-doped carbonized bacterial cellulose supported palladium catalyst and preparation method and application thereof

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Application publication date: 20171229