KR20180085672A - Electrolyte solution for hydrogen gas occurrence - Google Patents
Electrolyte solution for hydrogen gas occurrence Download PDFInfo
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- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
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- 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
- C01B3/08—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 with metals
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- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
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- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
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- C25D3/00—Electroplating: Baths therefor
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- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/54—Electroplating: Baths therefor from solutions of metals not provided for in groups C25D3/04 - C25D3/50
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- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
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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
Description
본 발명은 수소가스 발생용 전해액의 조성물에 관한 것으로서, 특히 마그네슘합금재 또는 알루미늄합금재의 표면에 산화막을 형성하는 과정에서 발생되는 수소가스를 용이하게 생성할 수 있도록 하는 수소가스 발생용 전해액의 조성물에 관한 것이다.The present invention relates to a composition for an electrolytic solution for generating hydrogen gas, and more particularly to a composition for an electrolytic solution for generating hydrogen gas, which can easily generate hydrogen gas generated in the process of forming an oxide film on the surface of a magnesium alloy material or an aluminum alloy material .
수소원자는 단위 양전하를 띤 양성자로 이루어진 핵과, 음전하를 띠며 핵과 연관되어 있는 전자로 구성되고, 가장 가벼운 원소로 모든 기체 중에서 열전도도가 가장 높고, 확산계수가 가장 크며, 지구상에서 9번째로 풍부하며, 가장 가벼운 원소이어서 지구 전체질량의 0.9％를 차지하며, 전체에 존재하는 모든 물질 질량의 약 75％를 차지할 정도로 풍부한 원소로 알려져 있다.The hydrogen atom is composed of a nucleus composed of protons with a unit positive charge and electrons associated with the nucleus with a negative charge. It is the lightest element with the highest thermal conductivity among all gases, the largest diffusion coefficient, the ninth richest , Which is the lightest element, accounts for 0.9% of the Earth's total mass, and is known to be abundant enough to occupy about 75% of all masses in the world.
또한 동식물을 구성하는 모든 물질은 수소가 탄소 및 다른 원소와 결합하여 형성된 화합물이며, 석유와 석탄에서 탄화수소 형태로 있으며, 물 무게의 약 11％를 차지한다.In addition, all the materials that constitute plants and animals are compounds formed by combining hydrogen with carbon and other elements, and they are hydrocarbon in petroleum and coal, accounting for about 11% of water weight.
그리고 수소는 암모니아와 메탄올 합성, 석유의 탈황제, 특정 정유과정에서 얻는 부산물로부터 안정성과 휘발성이 있는 물질을 만드는 데 많은 양의 수소가 사용된다.And hydrogen is used in large quantities of hydrogen to make materials that are stable and volatile from ammonia and methanol synthesis, desulfurization of petroleum, and byproducts from certain refining processes.
특히 액화수소는 산화제로 쓰이는 산소 또는 플루오르와 함께 로켓 연료로 사용되며, 최근에는 수소가 유해성이 없으면서 안정성이 우수하여 자동차 연료로 사용되는 추세이다.In particular, liquefied hydrogen is used as rocket fuel together with oxygen or fluorine used as an oxidizing agent. Recently, hydrogen is used as an automobile fuel because of its excellent stability without harmfulness.
이러한 수소 가스를 생산하기 위하여, 통상적으로 물을 전기분해하여 얻는 것이므로, 종래에는 전기분해에 사용되는 에너지에 비하여 수소의 생산량이 적어서 대량 생산에 한계가 있는 것이다.In order to produce such hydrogen gas, hydrogen is usually obtained by electrolysis of water, so that the amount of hydrogen produced is smaller than the energy used for electrolysis in the prior art, which limits the mass production.
본 발명은 상기와 같은 수소의 생산에 대한 단점을 개선하기 위하여 안출된 것으로서, 본 발명의 목적은 마그네슘합금재 또는 알루미늄합금재의 표면에 산화막을 형성하는 과정에서 발생되는 수소가스를 용이하게 생성할 수 있는 수소가스 발생용 전해액의 조성물을 제공하는 데 있다.It is an object of the present invention to provide a method for producing hydrogen gas which can easily generate hydrogen gas generated in the process of forming an oxide film on the surface of a magnesium alloy material or an aluminum alloy material, And an electrolyte solution for hydrogen gas generation.
상기와 같은 목적을 달성하기 위하여, 본 발명은 마그네슘합금재 또는 알루미늄합금재를 PEO(Plasma electrolytic oxidation) 표면처리 과정에서 사용되는 전해액으로 수소를 생산하기 위한 것으로 이루어지는 수소가스 발생용 전해액의 조성물에 있어서, 물 100중량부를 기준으로 하여 수산화나트륨(NaOH) 0.1 ~ 25중량부와 인산삼나트륨(Na3PO4) 0.1 ~ 10중량부, 수산화칼륨(KOH) 0.1 ~ 20중량부, 피로인산나트륨(Na4P2O7) 0.1 ~ 5중량부, 암모니아수(NH4OH) 0.1 ~ 2중량부, 그리고 수산화칼슘(Ca(OH)2) 0.1 ~ 10중량부를 물 100중량부에 혼합한 것으로 이루어지는 수소가스 발생용 전해액의 조성물을 제공한다.In order to achieve the above object, the present invention provides a composition for an electrolytic solution for generating hydrogen gas, which comprises a magnesium alloy material or an aluminum alloy material for producing hydrogen from an electrolytic solution used in a surface treatment process of PEO (Plasma electrolytic oxidation) , sodium hydroxide, based on 100 parts by weight water parts (NaOH) 0.1 ~ 25 parts by weight of trisodium phosphate (Na 3 PO 4) 0.1 ~ 10 parts by weight of potassium hydroxide (KOH) 0.1 ~ 20 parts by weight of sodium pyrophosphate (Na 4 P 2 O 7) 0.1 ~ 5 parts by weight of aqueous ammonia (NH 4 OH) 0.1 ~ 2 parts by weight, and calcium hydroxide (Ca (OH) 2) hydrogen gas formed as a mixture of 100 parts by weight of water and 0.1 to 10 parts by weight And the electrolyte solution.
이와 같이 이루어지는 본 발명에 의한 수소가스 발생용 전해액의 조성물은 암모니아수와 수산화칼슘으로 인하여 전해를 촉진하게 되므로, 마그네슘합금재 또는 알루미늄합금재를 PEO(Plasma electrolytic oxidation) 표면처리 과정에서 종래의 전기분해 방식보다 수소가 110 ~ 120 부피비로 발생하여 보다 많은 수소를 생산할 수 있다는 이점이 있다.Since the composition of the electrolytic solution for hydrogen gas generation according to the present invention accelerates the electrolysis due to ammonia water and calcium hydroxide, the magnesium alloy material or the aluminum alloy material can be used in the surface treatment of PEO (Plasma electrolytic oxidation) Hydrogen is generated at a volume ratio of 110 to 120, which is advantageous in that it can produce more hydrogen.
이하 본 발명에 의한 수소가스 발생용 전해액의 조성물의 바람직한 실시예를 더욱 상세하게 설명한다.Hereinafter, preferred embodiments of the composition of the electrolytic solution for generating hydrogen gas according to the present invention will be described in more detail.
본 발명에 의한 수소가스 발생용 전해액의 조성물은 마그네슘합금재 또는 알루미늄합금재를 PEO(Plasma electrolytic oxidation) 표면처리 과정에서 사용되는 전해액으로서, 이의 표면처리방법은 활성화단계 → 수세단계 → PEO표면처리단계 → 수세단계 → 건조단계로 이루어지며, 상기 PEO표면처리단계에서 사용되는 표면처리용액인 전해액에서 발생되는 수소가스를 생산할 수 있는 것이다.The composition of the electrolytic solution for generating hydrogen gas according to the present invention is an electrolytic solution used in a surface treatment process of PEO (Plasma electrolytic oxidation) of a magnesium alloy material or an aluminum alloy material, and its surface treatment method is an activation step → a water washing step → a PEO surface treatment step → water washing step → drying step, and it is possible to produce hydrogen gas generated from the electrolytic solution which is the surface treatment solution used in the PEO surface treatment step.
여기서 본 발명에 의한 수소가스 발생용 전해액은 수산화나트륨(NaOH)과 인산삼나트륨(Na3PO4), 수산화칼륨(KOH), 피로인산나트륨(Na4P2O7), 암모니아수(NH4OH), 수산화칼슘(Ca(OH)2)를 물에 혼합한 용액이다.The electrolytic solution for hydrogen gas according to the present invention are sodium (NaOH) and tricalcium phosphate, sodium hydroxide (Na 3 PO 4), potassium hydroxide (KOH), sodium pyrophosphate (Na 4 P 2 O 7) , ammonium hydroxide (NH 4 OH ) And calcium hydroxide (Ca (OH) 2 ) in water.
특히 본 발명에서는 물 100중량부를 기준으로 하여 수산화나트륨(NaOH) 0.1 ~ 25중량부와 인산삼나트륨(Na3PO4) 0.1 ~ 10중량부, 수산화칼륨(KOH) 0.1 ~ 20중량부, 피로인산나트륨(Na4P2O7) 0.1 ~ 5중량부, 암모니아수(NH4OH) 0.1 ~ 2중량부, 그리고 수산화칼슘(Ca(OH)2) 0.1 ~ 10중량부를 물에 혼합한 전해액을 특징으로 한다.Particularly, in the present invention, 0.1 to 25 parts by weight of sodium hydroxide (NaOH), 0.1 to 10 parts by weight of trisodium phosphate (Na 3 PO 4 ), 0.1 to 20 parts by weight of potassium hydroxide (KOH) 0.1 to 5 parts by weight of sodium (Na 4 P 2 O 7 ), 0.1 to 2 parts by weight of ammonia water (NH 4 OH), and 0.1 to 10 parts by weight of calcium hydroxide (Ca (OH) 2 ) .
PEO(Plasma electrolytic oxidation) 표면처리는 전기 화학적 반응이며, 마그네슘합금 또는 알루미늄합금의 표면 위에는 MgO 또는 Mg(OH)2 , Al2O3의 산화막이 형성되며, 이러한 과정에서 수소가스가 발생되는 것이다.The surface treatment of PEO (Plasma electrolytic oxidation) is an electrochemical reaction. An oxide film of MgO or Mg (OH) 2 or Al 2 O 3 is formed on the surface of magnesium alloy or aluminum alloy, and hydrogen gas is generated in this process.
예컨대 마그네슘합금의 표면에서는 For example, on the surface of a magnesium alloy
Mg = Mg2 ++ 2e,Mg = Mg < 2 + & gt ; + 2e,
2H++ 2e = H2 2H + + 2e = H 2
2H2O + 2e = H2+ 2OH2H 2 O + 2e = H 2 + 2OH
Mg + 2H+ = Mg2 ++ H2 Mg + 2H + = Mg 2 + + H 2
Mg2 ++ 2OH- = Mg(OH)2 Mg 2 + + 2 OH - = Mg (OH) 2
Mg + 2H2O = Mg(OH)2 + H2 Mg + 2H 2 O = Mg ( OH) 2 + H 2
의 과정으로 산화막이 형성되며, 이러한 과정에서 수소가스가 발생되는 것이다.And hydrogen gas is generated in this process.
여기서 본 발명에 의한 전해액은 조성물은 수산기(OH- )가 풍부하여 마그네슘합금 등의 표면에서 수산기가 수소이온에 비하여 매우 빠른 산화 속도를 나타내는 것이므로, 물에서 분해되는 수소가스가 보다 원활하게 전해액으로부터 이탈할 수 있는 것이다.Here, since the composition of the electrolyte according to the present invention is rich in hydroxyl groups (OH - ), hydroxyl groups on the surfaces of magnesium alloys and the like show a very rapid oxidation rate as compared with hydrogen ions, so that the hydrogen gas decomposed in water more smoothly escapes You can do it.
물론 수산화나트륨(NaOH)은 0.1 ~ 25중량부와 인산삼나트륨(Na3PO4) 0.1 ~ 10중량부, 수산화칼륨(KOH) 0.1 ~ 20중량부, 피로인산나트륨(Na4P2O7) 0.1 ~ 5중량부의 함량은 마그네슘합금 또는 알루미늄합금의 표면처리방법에 대한 종래의 기술에 사용된 바가 있으므로, 상세한 설명을 생략한다.Of sodium hydroxide as well as (NaOH) is 0.1 to 25 parts by weight of trisodium phosphate (Na 3 PO 4) 0.1 ~ 10 parts by weight of potassium hydroxide (KOH) 0.1 ~ 20 parts by weight of sodium pyrophosphate (Na 4 P 2 O 7) The content of 0.1 to 5 parts by weight is used in the prior art for the surface treatment method of magnesium alloy or aluminum alloy, and thus a detailed description thereof will be omitted.
이에 비하여 본 발명에 의한 전해액에 사용되는 암모니아수와 수산화칼슘은 본 발명에서는 전해를 촉진할 수 있는 전해 촉진제로 사용되는 것이다.In contrast, the aqueous ammonia and calcium hydroxide used in the electrolytic solution according to the present invention are used as an electrolytic accelerator capable of promoting electrolysis in the present invention.
그래서 암모니아수(NH4OH)를 0.1중량부보다 작게 함유하면 전해를 촉진하기에 부족하게 되고, 2중량부보다 많이 함유하더라도 전해를 촉진하는 것이 초과 함량을 대비하여 비례하지 않으므로 의미가 없다.Therefore, if ammonia water (NH 4 OH) is contained in an amount less than 0.1 part by weight, it is insufficient to accelerate electrolysis. Even if it contains more than 2 parts by weight, promotion of electrolysis is not proportional to an excess amount.
수산화칼슘(Ca(OH)2)을 0.1중량부보다 작게 함유하면 전해를 촉진하기에 부족하게 되고, 1 중량부보다 많이 함유하더라도 전해를 촉진하는 것이 초과 함량을 대비하여 비례하지 않으므로 의미가 없다.If calcium hydroxide (Ca (OH) 2 ) is contained in an amount of less than 0.1 part by weight, it is insufficient to accelerate electrolysis. Even if it contains more than 1 part by weight, promotion of electrolysis is not proportional to an excess amount.
특히 본 발명에서는 상기 암모니아수와 수산화칼슘을 혼합함으로써 전해액의 전해를 더욱 원활하게 촉진할 수 있는 것이다.In particular, in the present invention, electrolysis of the electrolytic solution can be promoted more smoothly by mixing the aqueous ammonia with calcium hydroxide.
Claims (2)
수산화나트륨(NaOH)과 인산삼나트륨(Na3PO4), 수산화칼륨(KOH), 피로인산나트륨(Na4P2O7), 암모니아수(NH4OH), 수산화칼슘(Ca(OH)2)를 물에 혼합한 것으로 이루어지는 수소가스 발생용 전해액의 조성물.A composition for an electrolytic solution for generating hydrogen gas, which comprises a magnesium alloy material or an aluminum alloy material for producing hydrogen from an electrolytic solution used in a surface treatment process of PEO (Plasma electrolytic oxidation)
Sodium (NaOH) and tricalcium phosphate, sodium hydroxide (Na 3 PO 4), potassium hydroxide (KOH), sodium pyrophosphate (Na 4 P 2 O 7) , ammonium hydroxide (NH 4 OH), the calcium hydroxide (Ca (OH) 2) And water. The composition for an electrolytic solution for generating hydrogen gas according to claim 1,
물 100중량부를 기준으로 하여 수산화나트륨(NaOH) 0.1 ~ 25중량부와 인산삼나트륨(Na3PO4) 0.1 ~ 10중량부, 수산화칼륨(KOH) 0.1 ~ 20중량부, 피로인산나트륨(Na4P2O7) 0.1 ~ 5중량부, 암모니아수(NH4OH) 0.1 ~ 2중량부, 그리고 수산화칼슘(Ca(OH)2) 0.1 ~ 10중량부를 물 100중량부에 혼합한 것을 특징으로 하는 이루어지는 수소가스 발생용 전해액의 조성물.The method according to claim 1,
0.1 to 25 parts by weight of sodium hydroxide (NaOH), 0.1 to 10 parts by weight of trisodium phosphate (Na 3 PO 4 ), 0.1 to 20 parts by weight of potassium hydroxide (KOH), sodium pyrophosphate (Na 4 0.1 to 5 parts by weight of ammonia water (P 2 O 7 ), 0.1 to 2 parts by weight of ammonia water (NH 4 OH), and 0.1 to 10 parts by weight of calcium hydroxide (Ca (OH) 2 ) Composition of electrolytic solution for generating gas.
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