CN105063786A - Method for preparing boron-nitrogen hydrogen storage fiber and application thereof - Google Patents
Method for preparing boron-nitrogen hydrogen storage fiber and application thereof Download PDFInfo
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- CN105063786A CN105063786A CN201510553437.2A CN201510553437A CN105063786A CN 105063786 A CN105063786 A CN 105063786A CN 201510553437 A CN201510553437 A CN 201510553437A CN 105063786 A CN105063786 A CN 105063786A
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Abstract
The invention discloses a method for preparing boron-nitrogen hydrogen storage fiber. The method comprises the following steps of making polyvinylpyrrolidone and alcohol solution into colloid A, dissolving ammonia borane solid powder and magnesium chloride in the colloid A to obtain colloid B, installing a flat syringe needle on a syringe, extracting the colloid B and placing the colloid B in an injection pump, enabling a certain distance to be reserved between the syringe needle and a receiving plate, adding an electric field through a high pressure generator, utilizing the injection pump to extrude the colloid B, and obtaining the boron-nitrogen hydrogen storage fiber on the receiving plate. The boron-nitrogen hydrogen storage fiber prepared through the method can obviously improve hydrogen desorption performance, and pure hydrogen not lower than 10 wt% is released at 100 DEG C. The boron-nitrogen hydrogen storage fiber preparation method is simple in process, easy to achieve and moderate in cost. Application of the boron-nitrogen hydrogen storage fiber is further disclosed, and the boron-nitrogen hydrogen storage fiber is used for releasing hydrogen.
Description
Technical field
The invention belongs to hydrogen storage technology and new material synthesis field, be specifically related to the preparation method of a kind of boron nitrogen system storage hydrogen fiber, and its application.
Background technology
Hydrogen Energy is a kind of secondary energy sources of efficient, clean, reproducible utilization, providing desirable counte-rplan, being thus subject to the common concern of countries in the world for solving the problems such as weather that current a large amount of use fossil fuel may cause, ecological deterioration and resource exhaustion.But the application of the scale business of Hydrogen Energy is faced with a series of technological challenges of link such as the producing of hydrogen, accumulating and application.The problem such as there is inflammable, explosive, easy diffusion due to hydrogen and normal temperature and pressure conditions lower volume energy density is low, developing efficient, safe hydrogen storaging and transport technology facing challenges the most outstanding, is restriction hydrogen utilization " bottleneck " link.
Storage hydrogen mode mainly contains three kinds: the solid-state storage hydrogen of gas cylinder, low temperature liquid hydrogen and material base.Though high-pressure gaseous stores have ripe business application technology, but hydrogen-storage density is low, poor stability, and low temperature liquid hydrogen faces that liquefaction energy consumption is high, Thermo Isolation Technique is complicated and be difficult to from volatilization problems such as avoiding, so these two kinds traditional storing hydrogen modes are difficult to meet the vehicle-mounted storage hydrogen application requirement the harshest to storage hydrogen condition.The solid-state storage hydrogen of material base be by chemical reaction or physical absorption by storing hydrogen in solid-state material, in hydrogen-storage density, energy efficiency and processing safety etc., there is significant advantage, be acknowledged as the most promising one storage hydrogen mode.
Boron nitrogen system hydride is the hydrogen storage material of a class great potential, and its lightweight element boron and nitrogen can make them have higher hydrogen capacity in conjunction with multiple hydrogen atom.In addition, hydrogen atom on boron and the hydrogen atom on nitrogen trend towards electronegative hydrogen and positively charged hydrogen respectively, this makes all there is dihydrogen bond network in all boron nitrogen systems hydrogen storage material structure, and the combination of (ortho-hydrogen and negative hydrogen) two hydrogen effectively can promote hydrogen discharge reaction.
In boron nitrogen system hydrogen storage material, ammonia borine possesses higher theoretical hydrogen (19.6wt%), but it is hydrogen desorption kinetics more slowly, harmful by-products gas (the boron pyridine simultaneously discharged in thermal decomposition process, ammonia and two borine), limit this material and be directly applied to fuel cell as hydrogen carrier.At present, ammonia borine puts hydrogen efficiently to utilize the modified method of some maturations to promote, wherein adopts method for making Nano modified effect particularly evident.Nano structural material shows the physical behavio(u)r different from body phase material usually.The particle size reducing hydride, to nanometer scale, will enlarge markedly specific surface energy, shorten diffusion/mass transfer distance, improve forming core activation energy and boundary contact, thus significantly improve the hydrogen discharging performance of material system.
Summary of the invention
The object of the invention is for above-mentioned present situation, aim to provide the preparation method of a kind of boron nitrogen system storage hydrogen fiber, make it 100 DEG C time, release the pure hydrogen being not less than 10wt%.
The technical solution adopted for the present invention to solve the technical problems is: the preparation method of a kind of boron nitrogen system storage hydrogen fiber, polyvinylpyrrolidone and alcohol liquid is comprised the steps: to be configured to colloid A, ammonia borine pressed powder and magnesium chloride are dissolved in colloid A, obtain colloid B, fill flat syringe needle on the injector, syringe pump is loaded after extracting colloid B, maintain a certain distance between syringe needle and dash receiver and add electric field by high pressure generator, with syringe pump, colloid B is extruded, namely dash receiver obtains described boron nitrogen system storage hydrogen fiber.
The preparation method of described a kind of boron nitrogen system storage hydrogen fiber, its alcohol liquid is methyl alcohol, ethanol or propylene glycol.
The preparation method of described a kind of boron nitrogen system storage hydrogen fiber, the addition of every 300mg polyvinylpyrrolidone alcohol corresponding liquid is 5-15mL.
The preparation method of described a kind of boron nitrogen system storage hydrogen fiber, its syringe uses 8-No. 12 flat syringe needles.
The preparation method of described a kind of boron nitrogen system storage hydrogen fiber, its high voltage electric field voltage is 10-15kV.
The preparation method of described a kind of boron nitrogen system storage hydrogen fiber, its ejection of syringe pump speed is 150-400 μ L/h.
Two of object of the present invention is to provide a kind of application of composite hydrogen storage material.
Main application: for release hydrogen.
Beneficial effect of the present invention is: the ammonia borine fiber prepared by electrospinning process obviously can improve hydrogen discharging performance, makes it 100 DEG C time, release the pure hydrogen being not less than 10wt%, and ammonia borine fiber producing processes technique simple, be easy to realize, moderate cost.
Accompanying drawing explanation
Fig. 1 is the SEM photo of ammonia borine fiber in the embodiment of the present invention 1;
Fig. 2 is the thermal decomposition mass spectrometry profile of ammonia borine fiber in the embodiment of the present invention 1;
Fig. 3 is that the constant temperature of ammonia borine fiber and pure ammonia borine in the embodiment of the present invention 1 puts hydrogen correlation curve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment 1
320mg polyvinylpyrrolidone and 10mL methyl alcohol are configured to colloid.
76mg ammonia borine pressed powder and 4mg magnesium chloride are dissolved in above-mentioned colloid.
Load syringe pump after extracting colloid with syringe, fill No. 12 flat syringe needles on the injector.
Keep 10cm between syringe needle and dash receiver and added the electric field of 14kV by high pressure generator, colloid is extruded with the injection speed of 300 μ L/h by syringe pump, and namely dash receiver obtains described ammonia borine fiber.
The SEM photo of ammonia borine fiber as shown in Figure 1; As shown in Figure 2, wherein programming rate is 5 degrees celsius/minute to the thermal decomposition mass spectrometry profile of ammonia borine fiber; The constant temperature of ammonia borine fiber and pure ammonia borine puts hydrogen correlation curve as shown in Figure 3.
Embodiment 2
320mg polyvinylpyrrolidone and 15mL ethanol are configured to colloid.
76mg ammonia borine pressed powder and 4mg magnesium chloride are dissolved in above-mentioned colloid.
Load syringe pump after extracting colloid with syringe, fill No. 9 flat syringe needles on the injector.
Keep 10cm between syringe needle and dash receiver and added the electric field of 15kV by high pressure generator, colloid is extruded with the injection speed of 235 μ L/h by syringe pump, and namely dash receiver obtains described ammonia borine fiber.
Embodiment 3
300mg polyvinylpyrrolidone and 5mL propylene glycol are configured to colloid.
76mg ammonia borine pressed powder and 4mg magnesium chloride are dissolved in above-mentioned colloid.
Load syringe pump after extracting colloid with syringe, fill No. 8 flat syringe needles on the injector.
Keep 10cm between syringe needle and dash receiver and added the electric field of 10kV by high pressure generator, colloid is extruded with the injection speed of 150 μ L/h by syringe pump, and namely dash receiver obtains described ammonia borine fiber.
Embodiment 3
300mg polyvinylpyrrolidone and 15mL propylene glycol are configured to colloid.
76mg ammonia borine pressed powder and 4mg magnesium chloride are dissolved in above-mentioned colloid.
Load syringe pump after extracting colloid with syringe, fill No. 8 flat syringe needles on the injector.
Keep 10cm between syringe needle and dash receiver and added the electric field of 10kV by high pressure generator, colloid is extruded with the injection speed of 400 μ L/h by syringe pump, and namely dash receiver obtains described ammonia borine fiber.
Above-described embodiment is illustrative principle of the present invention and effect thereof only; and the embodiment that part is used, for the person of ordinary skill of the art, without departing from the concept of the premise of the invention; can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. a preparation method for boron nitrogen system storage hydrogen fiber, is characterized in that: comprise the steps
A), polyvinylpyrrolidone and alcohol liquid are configured to colloid A;
B), by ammonia borine pressed powder and magnesium chloride be dissolved in colloid A, obtain colloid B;
C) fill flat syringe needle, on the injector, after extracting colloid B, load syringe pump;
D), maintain a certain distance between syringe needle and dash receiver and add electric field by high pressure generator, with syringe pump, colloid B being extruded, namely dash receiver obtains described boron nitrogen system storage hydrogen fiber.
2. the preparation method of a kind of boron nitrogen system according to claim 1 storage hydrogen fiber, it is characterized in that, described alcohol liquid is methyl alcohol, ethanol or propylene glycol.
3. the preparation method of a kind of boron nitrogen system according to claim 1 storage hydrogen fiber, it is characterized in that, the addition of every 300mg polyvinylpyrrolidone alcohol corresponding liquid is 5-15mL.
4. the preparation method of a kind of boron nitrogen system according to claim 3 storage hydrogen fiber, it is characterized in that, described syringe uses 8-No. 12 flat syringe needles.
5. the preparation method of a kind of boron nitrogen system according to claim 4 storage hydrogen fiber, it is characterized in that, described high voltage electric field voltage is 10-15kV.
6. the preparation method of a kind of boron nitrogen system according to claim 5 storage hydrogen fiber, it is characterized in that, described ejection of syringe pump speed is 150-400 μ L/h.
7. boron nitrogen system stores up an application for hydrogen fiber as claimed in claim 1, it is characterized in that: for release hydrogen.
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| CN201510553437.2A CN105063786A (en) | 2015-09-01 | 2015-09-01 | Method for preparing boron-nitrogen hydrogen storage fiber and application thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273286A (en) * | 1999-05-06 | 2000-11-15 | 中国科学院金属研究所 | Process for preparing nm-class carbon fibres as hydrogen storing material |
| CN101805943A (en) * | 2010-04-21 | 2010-08-18 | 哈尔滨工业大学 | Method for producing hollow carbon fibers |
| CN103154339A (en) * | 2010-08-06 | 2013-06-12 | 科学技术设备委员会 | Method of electrospinning fibres |
| WO2014017690A1 (en) * | 2012-07-25 | 2014-01-30 | 주식회사 지클로 | Method for preparing antibacterial thermal storage fiber, fiber prepared thereby, and fabrics using same |
-
2015
- 2015-09-01 CN CN201510553437.2A patent/CN105063786A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273286A (en) * | 1999-05-06 | 2000-11-15 | 中国科学院金属研究所 | Process for preparing nm-class carbon fibres as hydrogen storing material |
| CN101805943A (en) * | 2010-04-21 | 2010-08-18 | 哈尔滨工业大学 | Method for producing hollow carbon fibers |
| CN103154339A (en) * | 2010-08-06 | 2013-06-12 | 科学技术设备委员会 | Method of electrospinning fibres |
| WO2014017690A1 (en) * | 2012-07-25 | 2014-01-30 | 주식회사 지클로 | Method for preparing antibacterial thermal storage fiber, fiber prepared thereby, and fabrics using same |
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Application publication date: 20151118 |