CN107188125A - Have both solar energy enhanced absorption and the nano-fluid and preparation method of thermocatalytic attribute - Google Patents
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- CN107188125A CN107188125A CN201710342116.7A CN201710342116A CN107188125A CN 107188125 A CN107188125 A CN 107188125A CN 201710342116 A CN201710342116 A CN 201710342116A CN 107188125 A CN107188125 A CN 107188125A
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- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
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Abstract
Have both solar energy enhanced absorption and the nano-fluid and preparation method of thermocatalytic attribute the invention discloses a kind of, the nano-fluid is mixed by nano particle with hydrogen manufacturing solvent, and the nano particle is formed by the material with thermocatalytic performance with the Material cladding with phasmon effect.The nano-fluid is prepared into composite nanometer particle by the material with thermocatalytic performance and the material with phasmon effect, and form nano-fluid with hydrogen manufacturing solvent, thermocatalytic performance is not only made it have, and the light absorbs of nano-fluid can be strengthened using phasmon effect.Compared to the nano-fluid for singly having thermocatalytic characteristic, add after the material with phasmon effect, absorption of the nano-fluid to light can be promoted, trap increases, expand light abstraction width, it will need to heat by extra power in producing hydrogen, catalyzing device to improve into the purpose heated using the inside for the nano-fluid for having both the strong light absorption for having catalysis characteristics so as to reach, form light auxiliary thermocatalytic device.
Description
Technical field
The invention belongs to the technical field of composite, and in particular to have both solar energy enhanced absorption and thermocatalytic attribute
Nano-fluid.
Background technology
The decomposition of many solvents is required for catalyst in industry life, and the progress of their catalytic reactions generally requires to inhale
Receive heat.At present, it has been fairly common as crude fuel hydrogen manufacturing using methanol, in today of fossil fuel increasingly depleted, methanol system
Hydrogen is undoubtedly timely.Hydrogen, as a kind of renewable and clean energy resource, is all used in many fields, such as electronic industry, stone
Oiling work etc..But the direct burning of methanol faces huge problem, its chemistry of fuelHave massive losses.In order to solve this
Problem, existing expert proposes a kind of indirect methanol combustion method --- middle low-temperature solar energy preparing hydrogen by reforming methanol, pass through external energy
The source heating methanol aqueous solution obtains mixed vapour, is passed through parabolic trough type solar energy and concentrates and is reacted in reactor.The middle low temperature sun
Energy preparing hydrogen by reforming methanol reaction is an endothermic reaction, wherein, there is provided needed for reaction for the thermal source using solar energy as reforming reaction
200-300 DEG C of heat, so as to convert solar energy into chemical energy and be utilized, this can solve methanol and directly burn institute
Caused chemistryDamage this problem.But methanol aqueous solution heating evaporation is to be heated by extra power by early stage, must there is a large amount of
Energy loss, is improved for this case, and existing thermocatalytic performance is added in methanol aqueous solution strong light absorption again
Particle, formed nano-fluid so that methanol aqueous solution be rapidly heated under light illumination reach boiling point start evaporation obtain methanol-water mix
Steam is closed, then reaches that 200-300 DEG C starts reaction generation hydrogen by illumination heating.Therefore, it is this to have both solar energy enhanced suction
The nano-fluid with thermocatalytic attribute is received, the utilization cost of primary energy can be not only reduced, and reaction unit can be simplified.
The content of the invention
It is an object of the invention to provide a kind of nano-fluid for having both solar energy enhanced absorption with thermocatalytic attribute and preparation
Method, the nano-fluid can ensure thermocatalytic performance on the premise of improve absorbing properties, by light abstraction width from
Light expands to near-infrared and is even up to full spectrum utilization, will need to improve into using simultaneous by extra power heating in catalytic unit
The inside heating of the nano-fluid of the strong light absorption of thermocatalytic characteristic is had, utilization cost and the simplification of primary energy can be reduced
Reaction unit.
To achieve the above object, the technical solution adopted by the present invention is：
It is a kind of to have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, mixed by nano particle with hydrogen manufacturing solvent
Form, the nano particle is formed by the material with thermocatalytic performance with the Material cladding with phasmon effect.
It is preferred that, the nano particle is by two or more materials synthesis；Solvent is former by one or more kinds of hydrogen manufacturing
Liquid is constituted.When material of the selection with thermocatalytic performance is with material with phasmon effect, can select respectively it is a kind of or
A variety of, the mixing of multiple material enables to mixture to obtain multifrequency nature.
The material with thermocatalytic performance in the nano particle is directly contacted with hydrogen manufacturing solvent, to ensure to urge with heat
The material for changing performance does not lose its thermocatalytic performance.Such as, the material with phasmon effect is in discontinuous distribution of shapes
In the material surface with thermocatalytic performance, and the storeroom with phasmon effect leaves gap, and hydrogen manufacturing solvent passes through this
A little gaps are directly contacted with the material with thermocatalytic performance.It is preferred that, the material with phasmon effect is some
Individual round point shape, and intersperse and be distributed in the material surface with thermocatalytic performance.
A kind of to have both solar energy enhanced absorption and the preparation method of the nano-fluid of thermocatalytic attribute, step is as follows：
Step one：Prepare nano particle：It is determined that the material with thermocatalytic performance needed for preparing nano particle is with having
The material of phasmon effect, prepares composite nanometer particle；
Step 2：Prepare nano-fluid：Nano particle is added in hydrogen manufacturing solvent, ultrasound obtains uniform nanometer stream
Body.
Beneficial effect：Have both solar energy enhanced absorption and the nano-fluid and system of thermocatalytic attribute the invention provides a kind of
Preparation Method, the nano-fluid is prepared into compound receive by the material with thermocatalytic performance and the material with phasmon effect
Rice grain, and nano-fluid is formed with hydrogen manufacturing solvent, thermocatalytic performance is not only made it have, and phasmon effect can be utilized
The light absorbs of nano-fluid should be strengthened.Compared to the nano-fluid for singly having thermocatalytic characteristic, add with phasmon effect
After material, absorption of the nano-fluid to light can be promoted, trap increase expands light abstraction width, so that by thermocatalytic device
It is middle to need to heat to improve into by extra power to add using the inside for the nano-fluid for having both the strong light absorption for having thermocatalytic characteristic
Heat, forms light auxiliary thermocatalytic device.So reduce the utilization cost of primary energy and simplify reaction unit.
Brief description of the drawings
Fig. 1 is nano-fluid schematic diagram
In figure, 1, the material with thermocatalytic performance, 2, the material with phasmon effect, 3, hydrogen manufacturing solvent.
Embodiment
The present invention is done below in conjunction with the accompanying drawings and further explained.
As shown in figure 1, the nano-fluid for having both solar energy enhanced absorption and thermocatalytic attribute that the present invention is provided, by nanometer
Particle is mixed with hydrogen manufacturing solvent, and the nano particle is by the material with thermocatalytic performance with having phasmon effect
Material cladding is formed.
Nano particle is by two or more materials synthesis；Solvent is made up of one or more kinds of hydrogen manufacturing stostes.In choosing
The material with thermocatalytic performance is selected with having during the material of phasmon effect, one or more, Duo Zhongcai can be selected respectively
The mixing of material enables to mixture to obtain multifrequency nature.
The material with thermocatalytic performance in nano particle is directly contacted with hydrogen manufacturing solvent, to ensure to have thermocatalytic
The material of energy does not lose its thermocatalytic performance.As in Fig. 1, the material with phasmon effect is distributed in several round point shapes
Gap, hydrogen manufacturing solvent are left between material surface with thermocatalytic performance, the material with phasmon effect of round point shape
Directly contacted with the material with thermocatalytic performance by these gaps.In addition to round point shape, the material with phasmon effect
Can also be other discontinuous shapes.
Below by specific embodiment, the present invention will be further described.According to following embodiments, it can be better understood from
The present invention.
Following embodiments are illustrated by taking CuO/Ag nano-fluids as an example, and CuO has catalytic action to methanol, and Ag has table
Face phasmon effect, prepares nano particle by the material of both performances and is mixed with methanol, can form one kind and have both heat
The strong light absorption nano-fluid of catalysis characteristics.
Embodiment 1：
The first step：The preparation of CuO/Ag nano particles
(1) by 1.7625gCu (NO3).3H20 is dissolved in 150mL deionized waters, magnetic with 5gPVP (polyethylene pyrrole network alkanone)
Power stirs 4h, is used as presoma；Then configuration concentration is 0.1mol/L ammoniacal liquor 145mL, is added dropwise in presoma, magnetic force is stirred
Mix and 8h is heated at 60 DEG C, reaction is cleaned 5 times after terminating with deionized water, dry CuO powder；
(2) the CuO powder of preparation is dissolved in 100mL ethanol solutions, and ultrasound 1h, it is by the concentration configured
0.03mol/L SnCl2Ethanol solution is instilled in CuO ethanol solutions, in magnetic agitation 15min, is cleaned with ethanol solution 5 times,
Obtain active CuO；
(3) active CuO ethanol solutions are instilled to the AgNO that the concentration configured is 0.015mol/L dropwise3In solution, instead
2h is answered, is cleaned with deionized water 5 times, is dried to obtain CuO/Ag nano particles.
Second step：CuO/Ag nano-fluid preparation process：
The CuO/Ag nano particles being dried to obtain are weighed into 0.02g, according to shared by CuO and Ag in CuO/Ag nano particles
Mass ratio, respectively CuO accounts for 89.3%, Ag and accounts for 10.7%, adds in 19.4mL methanol, ultrasonic 15min that to obtain volume dense
Spend the even fluid for 0.015%.
Using spectrophotometer, trap is surveyed for 0.015% CuO and CuO/Ag nano-fluids to configuration volumetric concentration,
The absworption peak of CuO solution is at 638nm, and the position of the absworption peak of CuO/Ag nano-fluids, can in 740nm, 965nm, 1160nm
See the CuO/Ag nano-fluids of same concentrations and CuO solution, the former trap from visible near-infrared all compared with the height of the latter, and
In wavelength 800nm backward, the absorption curve of CuO solution is into obvious falling tendency, and the absorption curve of CuO/Ag nano-fluids is flat
It is slow, there is not obvious falling tendency.
Embodiment 2:
The first step：The preparation of CuO/Ag nano particles
(1) by 1.7625gCu (NO3).3H20 is dissolved in 150mL deionized waters, magnetic with 5gPVP (polyethylene pyrrole network alkanone)
Power stirs 4h, is used as presoma；Then configuration concentration is 0.1mol/L ammoniacal liquor 145ml, is added dropwise in presoma, magnetic force is stirred
Mix and 8h is heated at 60 DEG C, reaction is cleaned 5 times after terminating with deionized water, dry CuO powder；
(2) the CuO powder prepared is dissolved in 100mL ethanol solutions, and ultrasound 1h, it is by the concentration configured
0.06mol/L SnCl2Ethanol solution is instilled in CuO ethanol solutions, in magnetic agitation 15min, is cleaned with ethanol solution 5 times,
Obtain active CuO；
(3) active CuO ethanol solutions are instilled to the AgNO that the concentration configured is 0.03mol/L dropwise3In solution, reaction
2h, is cleaned 5 times with deionized water, is dried to obtain CuO/Ag nano particles
Second step：CuO/Ag nano-fluid preparation process：
The CuO/Ag nano particles being dried to obtain are weighed into 0.02g, according to shared by CuO and Ag in CuO/Ag nano particles
Mass ratio, respectively CuO accounts for 80.8%, Ag and accounts for 19.2%, adds in 18.7mL methanol, ultrasonic 15min that to obtain volume dense
Spend the even fluid for 0.015%.
Using spectrophotometer, trap is surveyed for 0.015% CuO and CuO/Ag nano-fluids to configuration volumetric concentration,
The absworption peak of CuO solution is at 638nm, and the absworption peak of CuO/Ag nano-fluids is in 723nm, 963nm, 1161nm, it is seen that identical
The CuO/Ag nano-fluids of concentration and CuO solution, the former trap is from visible near-infrared all compared with the height of the latter, and in wavelength
Backward, the absorption curve of CuO solution is into obvious falling tendency, and the absorption curve of CuO/Ag nano-fluids is gentle, does not have by 800nm
Obvious falling tendency.
Embodiment 3：
The first step：The preparation of CuO/Ag nano particles：
(1) by 1.7625gCu (NO3).3H20 is dissolved in 150mL deionized waters, magnetic with 5gPVP (polyethylene pyrrole network alkanone)
Power stirs 4h, is used as presoma；Then configuration concentration is 0.1mol/L ammoniacal liquor 145mL, is added dropwise in presoma, magnetic force is stirred
Mix and 8h is heated at 60 DEG C, reaction is cleaned 5 times after terminating with deionized water, dry CuO powder；
(2) the CuO powder prepared is dissolved in 100ml ethanol solutions, and ultrasound 1h, it is by the concentration configured
0.12mol/L SnCl2Ethanol solution is instilled in CuO ethanol solutions, in magnetic agitation 15min, is cleaned with ethanol solution 5 times,
Obtain active CuO；
(3) active CuO ethanol solutions are instilled to the 0.06mol/L configured AgNO dropwise3In solution, 2h is reacted, is used
Deionized water is cleaned 5 times, is dried to obtain CuO/Ag nano particles
Second step：CuO/Ag nano-fluid preparation process：
The CuO/Ag nano particles being dried to obtain are weighed into 0.02g, according to shared by CuO and Ag in nano-particle CuO/Ag
Mass ratio, respectively CuO accounts for 67.8%, Ag and accounts for 32.2%, adds in 17.8mL methanol, ultrasonic 15min that to obtain volume dense
Spend the even fluid for 0.015%.
Using spectrophotometer, trap is surveyed for 0.015% CuO and CuO/Ag nano-fluids to configuration volumetric concentration,
The absworption peak of CuO solution is at 638nm, and the absworption peak of CuO/Ag nano-fluids is in 709nm, 963nm, 1199nm, it is seen that identical
The CuO/Ag nano-fluids of concentration and CuO solution, the former trap is from visible near-infrared all compared with the height of the latter, and in wavelength
Backward, the absorption curve of CuO solution is into obvious falling tendency, and the absorption curve of CuO/Ag nano-fluids is gentle, does not have by 800nm
Obvious falling tendency.
Described above is only the embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of present techniques principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the protection domain of the application.
Claims (9)
1. a kind of have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：By nano particle and system
Hydrogen solvent is mixed, and the nano particle is by the material with thermocatalytic performance and the Material cladding with phasmon effect
Form.
2. according to claim 1 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
The nano particle is by two or more materials synthesis；Solvent is made up of the mixing of one or more kinds of hydrogen manufacturing stostes.
3. according to claim 1 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
The material with thermocatalytic performance in the nano particle is directly contacted with hydrogen manufacturing solvent.
4. according to claim 3 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
The material with phasmon effect in discontinuous distribution of shapes in the material surface with thermocatalytic performance, and with etc.
Storeroom from excimer effect leaves gap, and hydrogen manufacturing solvent is directly connect by these gaps with the material with thermocatalytic performance
Touch.
5. according to claim 4 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
The material with phasmon effect is several round point shapes, and intersperses and be distributed in the material list with thermocatalytic performance
Face.
6. according to claim 1 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
The nano particle is CuO/Ag nano particles, and the material with thermocatalytic performance is CuO, the material with phasmon effect
For Ag, hydrogen manufacturing solvent is methanol.
7. according to claim 6 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
In the CuO/Ag nano particles, CuO mass fraction is 67.8%-89.3%；Ag mass fraction is 10.7%-
32.2%.
8. according to claim 6 have both solar energy enhanced absorption and the nano-fluid of thermocatalytic attribute, it is characterised in that：
The volumetric concentration of the CuO/Ag nano particles is 0.015%.
9. a kind of have both solar energy enhanced absorption and the preparation method of the nano-fluid of thermocatalytic attribute, it is characterised in that：Step
It is as follows：
Step one：Prepare nano particle：It is determined that material with thermocatalytic performance needed for preparing nano particle with wait from
The material of excimer effect, prepares composite nanometer particle；
Step 2：Prepare nano-fluid：Nano particle is added in hydrogen manufacturing solvent, ultrasound obtains uniform nano-fluid.
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Cited By (2)
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| CN109650334A (en) * | 2019-01-24 | 2019-04-19 | 南京航空航天大学 | A kind of method of direct photothermal conversion hydrogen from methyl alcohol |
| CN112973703A (en) * | 2021-01-26 | 2021-06-18 | 南京航空航天大学 | Method for producing hydrogen by direct photo-thermal concerted catalysis of methanol |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109650334A (en) * | 2019-01-24 | 2019-04-19 | 南京航空航天大学 | A kind of method of direct photothermal conversion hydrogen from methyl alcohol |
| CN112973703A (en) * | 2021-01-26 | 2021-06-18 | 南京航空航天大学 | Method for producing hydrogen by direct photo-thermal concerted catalysis of methanol |
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| Publication number | Publication date |
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| CN107188125B (en) | 2019-05-14 |
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