CN106140166A - A kind of loaded catalyst, preparation method and applications - Google Patents
A kind of loaded catalyst, preparation method and applications Download PDFInfo
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- CN106140166A CN106140166A CN201610494201.0A CN201610494201A CN106140166A CN 106140166 A CN106140166 A CN 106140166A CN 201610494201 A CN201610494201 A CN 201610494201A CN 106140166 A CN106140166 A CN 106140166A
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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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
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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
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/065—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents from a hydride
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- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention discloses the preparation method of a kind of loaded catalyst, comprise the following steps: S1, material with carbon element is dispersed in isopropanol or normal propyl alcohol, form material with carbon element mixed solution；S2, in material with carbon element mixed solution add binary transition metal salting liquid, rapidly join deionized water after reacting 0.5 1.5h at 70 100 DEG C, and continue to react 10 40min at 70 100 DEG C；S3, the product in step S2 is washed, and the product after washing is dried process, prepare the catalyst of carbon material supported bimetallic oxide nano particle.The inventive method utilizes water and isopropanol or normal propyl alcohol system, and the characteristic that acetate at high temperature hydrolyzes is prepared for bimetallic oxide and is loaded to prepare on material with carbon element catalyst, the lower cost for material that preparation method is simple, workable, use, and can produce in a large number.
Description
Technical field
The present invention relates to hydrogen storage material field, particularly relate to a kind of loaded catalyst, preparation method and applications.
Background technology
With industrial expansion, being continuously increased of population, develop continuable green energy resource for example, wind energy, solar energy and
Hydrogen Energy has extremely important meaning.And in these clean energy resourcies, because Hydrogen Energy energy density is high, when use, there is no dirt
The byproduct of metachromia generates (only water generation), does not results in harm to environment, and the economy based on Hydrogen Energy has obtained
Increasing concern.But a urgent problem develops one exactly and can store a large amount of hydrogen, and price
The storage material of cheap nontoxic solid-state.In the various materials being worked out at present, ammonia borine (Ammonia Borane) is
A kind of more satisfactory hydrogen storage material, it is most basic boron-nitrogen compound, because of its high hydrogen storage content (19.6 wt%) and room
The characteristics such as temperature is stable receive more and more attention, and have become as one of a kind of potential hydrogen storage material.
In order to be catalyzed ammonia borane hydrolysis efficiently, quickly discharging hydrogen from ammonia borine, many researchers pay
Substantial amounts of effort, Pt nano particle is loaded on CNT by Wenyao Chen etc., it is thus achieved that very efficient catalyst；
Serdar Akbayrak and Saim O zkar will prepare effective catalyst on Ru nanometer particle load to multi-walled carbon nano-tubes.
Remove noble metal Pt, Ru as introduced above etc. to be applied in this field, substantial amounts of base metal (Cu, Ni, Co etc.) catalyst
Also being prepared out, Jun Li etc. loads to copper-cobalt alloy on metal organic frame；Hoang Yen and Freddy Kleitz
By high-temperature heat treatment after metal precursor physical mixed is prepared cupric oxide nickel oxide mixture.Therefore, noble metal catalyst
(such as platinum, ruthenium, rhodium) is although effect is good, but price is too high, limits application in actual production for the ammonia borine.And base metal
Catalyst (such as copper, cobalt, nickel), although low cost, but catalytic efficiency is not high.
Content of the invention
In order to solve above-mentioned technical problem, the invention provides the preparation method of a kind of loaded catalyst, including following
Step:
S1, material with carbon element is dispersed in isopropanol or normal propyl alcohol, forms material with carbon element mixed solution；
S2, in material with carbon element mixed solution, add binary transition metal salting liquid, at 70-100 DEG C, react fast after 0.5-1.5h
Speed adds deionized water, and continues to react 10-40min at 70-100 DEG C；
S3, the product in step S2 is washed, and the product after washing is dried process, prepare carbon material
The catalyst of material supported bi-metallic oxide nano particles.
Further, the material with carbon element in described step S1 is in graphene oxide, CNT, porous carbon and Graphene
The combination of one or more；
Binary transition metal salting liquid in described step S2 is the combination of any two kinds in molysite, cobalt salt, mantoquita and nickel salt.
Further, described molysite is ferric acetate, and described cobalt salt is cobalt acetate, and described mantoquita is copper acetate, described nickel salt
For nickel acetate.
Further, the summation of the amount of described binary transition metal salting liquid material is 0.1-0.5mmol.
Further, in described step S1, material with carbon element and the mass ratio of isopropanol or normal propyl alcohol are 1-2:1；Described step S1
Middle isopropanol or normal propyl alcohol are 1:1 with the volume ratio of deionized water in step S2.
Further, described binary transition metal salting liquid is preferably copper acetate and cobalt acetate；
The amount of the material of described copper acetate and cobalt acetate is than for 1-4:1.
Correspondingly, present invention also offers a kind of loaded catalyst, described catalyst is to be prepared into by above-mentioned method
Arriving, described catalyst is carbon material supported bimetallic oxide nano particle.
Further, described material with carbon element is one or more in graphene oxide, CNT, porous carbon and Graphene
Combination；
Described bimetallic oxide be iron, cobalt, copper and mickel oxide in the combination of any two kinds；
The size of described bimetallic oxide nano particle is 2-10nm.
Further, described bimetallic oxide is preferably the oxide of copper and cobalt, the wherein ratio of the amount of copper and cobalt material
For 1-4:1.
Correspondingly, present invention also offers the application of a kind of loaded catalyst, described catalyst is above-mentioned catalyst,
Described catalyst is dispersed in the ammonia borine aqueous solution, is used for ammonia borane hydrolysis dehydrogenation.
The present invention has between bimetallic oxide nano particle synergy, and bimetallic oxide nano particle with
Also there is between carrier carbon material certain synergy so that the catalytic effect of catalyst is high.
In addition, water in the present invention and isopropanol or normal propyl alcohol system are extremely important, if not having water to only have isopropanol or just
Propyl alcohol, then cannot form nano particle, if not having isopropanol or normal propyl alcohol to only have water, then nano particle can be considerably less, catalysis effect
Fruit is very undesirable, and therefore, water, isopropanol or normal propyl alcohol system are extremely important.
The loaded catalyst of the present invention, preparation method and applications, have the advantages that
1st, the inventive method utilizes water and isopropanol or normal propyl alcohol system, and the characteristic that acetate at high temperature hydrolyzes is prepared for
Bimetallic oxide is simultaneously loaded to prepare on material with carbon element catalyst, and preparation method is simple, workable, use
Lower cost for material, and can produce in a large number.
2nd, carbon material supported bimetallic oxide nano-particle material is applied in ammonia borane hydrolysis hydrogen manufacturing by the present invention,
Obtaining very high catalytic effect, not only catalytic efficiency is higher than other non-precious metal catalyst in prior art, and catalysis
The stability of agent and repeatability are very good.
3rd, in ammonia borane hydrolysis catalyst, less as the catalyst of catalyst body using metal oxide, and will be double
Metal oxide nanoparticles is combined with material with carbon element, unprecedented especially.And in the present invention catalyst preparation method letter
Single efficient, catalyst cost is very low, and catalytic effect is very good.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the accompanying drawing of required use is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, all right
Obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the schematic diagram of the loaded catalyst preparation process in the embodiment of the present invention one；
Fig. 2 is the catalyst Cu in the embodiment of the present invention one0.8Co0.2The transmission electron microscope picture of O-GO and X-ray energy spectrum elemental map；
Fig. 3 is the catalyst Cu in the embodiment of the present invention one0.8Co0.2The grain size distribution of O-GO；
Fig. 4 is the Raman figure of catalyst prepared by copper cobalt different proportion in the embodiment of the present invention one；
Fig. 5 is the XRD of catalyst prepared by copper cobalt different proportion in the embodiment of the present invention one；
Fig. 6 is the comparison diagram of the catalytic performance of bimetallic oxide and single metal oxides in the embodiment of the present invention one；
Fig. 7 is the catalytic performance comparison diagram of catalyst prepared by copper cobalt different proportion in the embodiment of the present invention one；
Fig. 8 is the Cu in the embodiment of the present invention one in different time0.8Co0.2The stability test figure of O-GO sample；
Fig. 9 be in the embodiment of the present invention one different temperatures to Cu0.8Co0.2The impact of the catalytic performance of O-GO sample；
Figure 10 is the comparison chart of the catalytic performance of three kinds of catalyst in the embodiment of the present invention one to three.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments wholely.Based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of not making creative work all its
His embodiment, broadly falls into the scope of protection of the invention.
Embodiment one:
Embodiments provide the preparation method of a kind of loaded catalyst, comprise the following steps:
Step one: the preparation (i.e. material with carbon element is graphene oxide) of graphene oxide (Graphene Oxide, GO), GO uses
Prepared by the Hummers after improvement, freeze-drying obtains product.
1) in the flask of 500ml, add 2g graphite and 1.0g sodium nitrate, after forming mixture, add the concentrated sulfuric acid of 46ml,
And be positioned over flask under condition of ice bath；
2) use mechanical agitation, after said mixture is stirred 20 minutes, within a hour, divide 12 times by the permanganic acid of 6g
Potassium (addition 0.5g potassium permanganate i.e. per minute) is slowly added thereto (can be slow slowly), continues one hour of stirring after adding；
3) move to flask in oil bath pan, and temperature is risen to 35 DEG C, keep 2 hours of reaction；
4), after 2 hour reactions terminate, utilize liquid-transfering gun to be slowly added to 92ml deionized water, after water injection afterwards temperature is risen to 98
DEG C, keep this thermotonus 20 minutes；
5) close heater, in flask, add the deionized water of 280ml, and then add 5ml hydrogen peroxide (30wt%), whole
Mechanical agitation is kept during individual；
6) when equitemperature is down to about 60 DEG C, centrifugal filtration while hot, and wash with the watery hydrochloric acid of 400ml 10%；
7) using the mixture centrifuge washing that deionized water will obtain in step 6), first 500 leave the heart removes heavier miscellaneous in 3 minutes
Matter, then 8800 leaves heart 3min until supernatant liquor pH value is to neutrality, and utilizes silver nitrate and barium chloride detection supernatant liquor
In not chloride ion-containing (Cl-) and sulfate ion (SO4 2-)；
8) precipitation obtaining is disperseed in deionized water, to be placed on-70 DEG C of freezings, use freeze drier, be dried 48h
Prepare graphene oxide powder.
Step 2: the preparation of loaded catalyst, as it is shown in figure 1, Fig. 1 is the loaded catalyst in the embodiment of the present invention
The schematic diagram of preparation process；
1) GO of 80mg is dispersed in 80ml isopropanol, ultrasonic 1h, form GO mixed solution；
2) import graphene oxide GO mixed solution in there-necked flask, and be added thereto to 0.192mmol copper acetate and 0.048
There-necked flask is placed in oil bath pan by mmol cobalt acetate, rapidly joins 80 ml deionizations after one hour of 80 DEG C of back flow reaction
Water, and keep 80 DEG C to continue reaction 30 minutes；
3), after obtaining mixed solution, absolute ethyl alcohol filtration washing 2 times is used, then after being washed with deionized 2 times, in 70 DEG C of air
It is dried 12 hours；
Change step 2) in the ratio of amount of material of copper and cobalt be 10:0,8:2,6:4,5:5,4:6,2:8,0:10,
The amount summation of the material of holding copper and cobalt is 0.24 mmol, and remaining experimental procedure is same as described above, prepares 7 groups of different catalysis
Agent is for the test of ammonia borane hydrolysis.
Correspondingly, the embodiment of the present invention additionally provides a kind of loaded catalyst, and described catalyst is prepared by said method
Obtaining, described catalyst is GO supported copper cobalt dual-metal oxide nano particles；Described bimetallic oxide nano particle
A size of 3 ± 0.5nm nm, wherein the ratio of the amount of copper and cobalt material is 1-4:1.
As shown in table 1 below, table 1 is the tenor of copper and cobalt in each sample in the embodiment of the present invention and corresponding TOF
Value comparison diagram.
Table 1
Fig. 2 is the catalyst Cu in the embodiment of the present invention0.8Co0.2The transmission electron microscope picture of O-GO and X-ray energy spectrum elemental map, pass through
It is about 3nm that analysis can obtain particle size, and nano particle is dispersed on carrier graphene oxide.Fig. 3 is this
Catalyst Cu in bright embodiment0.8Co0.2The grain size distribution of O-GO, by demonstrating the particle size that Fig. 2 plants in figure, particle is put down
All a size of 3 ± 0.5nm.
Fig. 4 and Fig. 5 is Raman figure and the XRD of catalyst prepared by copper cobalt different proportion in the embodiment of the present invention respectively,
The existence of graphene oxide can be proved by Raman figure and XRD simultaneously, and XRD also demonstrates CuxCo1-xO-GO nanoparticle
Son is a kind of unformed structure.
Fig. 6 is the comparison diagram of the catalytic performance of bimetallic oxide and single metal oxides in the embodiment of the present invention, by scheming
Understanding, the catalytic effect of bimetallic oxide is far better than single metal oxides.
Fig. 7 is the catalytic performance comparison diagram of catalyst prepared by copper cobalt different proportion in the embodiment of the present invention, as seen from the figure,
When copper cobalt ratio is different, the catalyst performance preparing is different, can be seen that in upper table 1, wherein especially with
Cu0.8Co0.2O-GO and Cu0.6Co0.4The catalytic performance of O-GO is optimal, according to testing its corresponding TOF value, wherein high is
Cu0.8Co0.2O-GO, its value is 70 molH2·min-1·molmetal -1。
Fig. 8 is the Cu in the embodiment of the present invention in different time0.8Co0.2The stability test figure of O-GO sample, can by figure
Know, Cu0.8Co0.2The stability of O-GO sample is extraordinary, there is no obvious performance loss, is maintained at 90% for first 6 times
Left and right.
In Fig. 8,1-8 represents the Cu of differential responses time respectively0.8Co0.2O-GO sample, this 1-8 sample effect comparison is such as
Shown in table 2 below.
Table 2
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
| Effect (%) | 100 | 88.9 | 88.9 | 94.7 | 88.9 | 94.7 | 63.2 | 58.3 |
| TOF | 70 | 62.2 | 62.2 | 66.3 | 62.2 | 66.3 | 44.2 | 40.8 |
| Reaction time (min) | 2 | 2.25 | 2.25 | 2.12 | 2.25 | 2.12 | 3.16 | 3.43 |
Fig. 9 be in the embodiment of the present invention different temperatures to Cu0.8Co0.2The impact of the catalytic performance of O-GO sample, as seen from the figure, with
The rising of temperature, catalytic performance promote it is obvious that and according to the different performance under different temperatures, according to Arrhenius
Formula (Arrhenius equation), can calculate Cu0.8Co0.2The activation energy of O-GO is 45.53KJ/mol.
The loaded catalyst of the present invention, preparation method and applications, have the advantages that
1st, the inventive method utilizes water and Isopropanol Solvent, and the characteristic that acetate at high temperature hydrolyzes is prepared for bimetallic oxygen
Compound is simultaneously loaded to prepare on material with carbon element catalyst, and preparation method is simple, workable, the material cost of use
Cheap, and can produce in a large number.
2nd, by the ratio of regulation and control copper and the amount of the material of cobalt in the present invention, obtain when finding optimal preparation ratio to be 4:1
Optimum catalytic effect, the maximum rate of catalysis ammonia borane hydrolysis dehydrogenation reaches 22.8LH2·min-1·gmetal -1, the unit interval
The reactant molecule number TOF(turnover frequency of activation site conversion) value is 70 molH2·min-1·molmetal -1,
Catalytic efficiency is better than in prior art other non-precious metal catalysts, and stability and repeatability are also optimum.This external oxidation
Graphene and deionized water: when isopropanol is 1:1:1, it is thus achieved that the catalytic effect of catalyst also optimal.
Embodiment two:
Embodiments provide the preparation method of a kind of loaded catalyst, comprise the following steps:
It S1, is dispersed in the porous carbon of 80mg in the normal propyl alcohol of 90ml, ultrasonic 40min, form porous carbon mixed solution；
S2, import porous carbon mixed solution in there-necked flask, and be added thereto to 0.043mmol ferric acetate and 0.057mmol
There-necked flask is placed in oil bath pan by nickel acetate, rapidly joins 90 ml deionized waters, and keep after 70 DEG C of back flow reaction 1.5h
70 DEG C are continued reaction 40min；
3), after obtaining mixed solution, absolute ethyl alcohol centrifuge washing 2 times is used, then after being washed with deionized 2 times, in 60 DEG C of air
It is dried 12 hours.
Correspondingly, the embodiment of the present invention additionally provides a kind of loaded catalyst, and described catalyst is prepared by said method
Obtaining, described catalyst is porous carbon load iron nickel bimetal oxide nano particles；Described bimetallic oxide nanometer
The size of grain is 4 ± 0.5nm nm, and wherein the ratio of the amount of iron and nickel material is 1.3:1.
Correspondingly, the embodiment of the present invention additionally provides the application of a kind of loaded catalyst, and described catalyst is above-mentioned
Described catalyst is dispersed in the ammonia borine aqueous solution by catalyst, is used for ammonia borane hydrolysis dehydrogenation.
The preparation method of the porous carbon in the embodiment of the present invention is any one method in prior art.
Embodiment three:
Embodiments provide the preparation method of a kind of loaded catalyst, comprise the following steps:
S1, by the graphene dispersion of 80mg in the isopropanol of 51ml, ultrasonic 40min, formed Graphene mixed solution；
S2, import Graphene mixed solution in there-necked flask, and be added thereto to 0.35mmol copper acetate and 0.15mmol second
There-necked flask is placed in oil bath pan, rapidly joins 51ml deionized water, and keep 100 after 100 DEG C of back flow reaction 0.5h by acid nickel
DEG C continue reaction 10min；
S3, obtain mixed solution after, use absolute ethyl alcohol filtration washing 2 times, then after being washed with deionized 2 times, 80 DEG C of air
Middle drying 12 hours.
Correspondingly, the embodiment of the present invention additionally provides a kind of loaded catalyst, and described catalyst is prepared by said method
Obtaining, described catalyst is porous carbon supported copper nickel bimetal oxide nano particles；Described bimetallic oxide nanometer
The size of grain is 3 ± 0.25nm nm, and wherein the ratio of the amount of copper and mickel material is 2.3:1.
Correspondingly, the embodiment of the present invention additionally provides the application of a kind of loaded catalyst, and described catalyst is above-mentioned
Described catalyst is dispersed in the ammonia borine aqueous solution by catalyst, is used for ammonia borane hydrolysis dehydrogenation.
The loaded catalyst of the present invention, preparation method and applications, have the advantages that
1st, the inventive method utilizes water and isopropanol or normal propyl alcohol system, and the characteristic that acetate at high temperature hydrolyzes is prepared for
Bimetallic oxide is simultaneously loaded to prepare on material with carbon element catalyst, and preparation method is simple, workable, use
Lower cost for material, and can produce in a large number.
2nd, carbon material supported bimetallic oxide nano-particle material is applied in ammonia borane hydrolysis hydrogen manufacturing by the present invention,
Obtaining very high catalytic effect, not only catalytic efficiency is higher than other non-precious metal catalyst in prior art, and catalysis
The stability of agent and repeatability are very good.
3rd, in ammonia borane hydrolysis catalyst, less as the catalyst of catalyst body using metal oxide, and will be double
Metal oxide nanoparticles is combined with material with carbon element, unprecedented especially.And in the present invention catalyst preparation method letter
Single efficient, catalyst cost is very low, and catalytic effect is very good.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. the preparation method of a loaded catalyst, it is characterised in that comprise the following steps:
S1, material with carbon element is dispersed in isopropanol or normal propyl alcohol, forms material with carbon element mixed solution；
S2, in material with carbon element mixed solution, add binary transition metal salting liquid, at 70-100 DEG C, react fast after 0.5-1.5h
Speed adds deionized water, and continues to react 10-40min at 70-100 DEG C；
S3, the product in step S2 is washed, and the product after washing is dried process, prepare carbon material
The catalyst of material supported bi-metallic oxide nano particles.
2. the preparation method of loaded catalyst according to claim 1, it is characterised in that the carbon material in described step S1
Material is the combination of one or more in graphene oxide, CNT, porous carbon and Graphene；
Binary transition metal salting liquid in described step S2 is the combination of any two kinds in molysite, cobalt salt, mantoquita and nickel salt.
3. the preparation method of loaded catalyst according to claim 2, it is characterised in that described molysite is ferric acetate,
Described cobalt salt is cobalt acetate, and described mantoquita is copper acetate, and described nickel salt is nickel acetate.
4. the preparation method of the loaded catalyst according to any one in claim 1-3, it is characterised in that described two
The summation of the amount of element/transition metal salting liquid material is 0.1-0.5mmol.
5. the preparation method of loaded catalyst according to claim 4, it is characterised in that material with carbon element in described step S1
Mass ratio with isopropanol or normal propyl alcohol is 1-2:1；
In described step S1, isopropanol or normal propyl alcohol are 1:1 with the volume ratio of deionized water in step S2.
6. the preparation method of loaded catalyst according to claim 5, it is characterised in that described binary transition metal salt
Solution is preferably copper acetate and cobalt acetate；
The amount of the material of described copper acetate and cobalt acetate is than for 1-4:1.
7. a loaded catalyst, it is characterised in that described catalyst is by the side described in any one in claim 1-6
Method prepares, and described catalyst is carbon material supported bimetallic oxide nano particle.
8. loaded catalyst according to claim 7, it is characterised in that described material with carbon element is that graphene oxide, carbon are received
The combination of one or more in mitron, porous carbon and Graphene；
Described bimetallic oxide be iron, cobalt, copper and mickel oxide in the combination of any two kinds；
The size of described bimetallic oxide nano particle is 2-10nm.
9. loaded catalyst according to claim 8, it is characterised in that described bimetallic oxide is preferably copper and cobalt
Oxide, wherein the ratio of the amount of copper and cobalt material is 1-4:1.
10. the application of a loaded catalyst, it is characterised in that described catalyst is described in claim 7-9 any one
Catalyst, described catalyst is dispersed in the ammonia borine aqueous solution, be used for ammonia borane hydrolysis dehydrogenation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106824211A (en) * | 2017-01-04 | 2017-06-13 | 安徽师范大学 | Graphene-supported cupro-nickel/cerium oxide nano composite, preparation method and ammonia borine catalytic decomposing method |
| CN115739094A (en) * | 2022-10-14 | 2023-03-07 | 惠州学院 | Preparation method and application of copper-nickel oxide composite nanowire film |
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