Abstract:
PURPOSE: A selective synthetic method of nano-wire containing intermetallic compound and a nano-wire synthesized by the method are provided to selectively mass synthesize carbon nano-cable, carbon nano-tube or carbon nano-fiber. CONSTITUTION: A selective synthetic method of nano-wire comprises the following steps: adding metal oxide compounds to a reactor and removing impurities inside a reactor by lowering degree of vacuum; increasing reaction temperature of the internal temperature of the reactor by injecting carrier gas into the reactor; reacting the metal oxide compound with the metal oxide compound with the metal oxide mixture by injecting the hydrocarbon gas while controlling the inner compression of the reactor; and cooling the reactor down to the room temperature under the carrier gas condition. The metal oxide compound is a mixture of copper oxide and tin oxide. The mixing ratio of tin oxide to copper oxide is 2:1-1:6 based on the weight ratio.
Abstract:
본 발명의 촉매반응 장치는 셀룰로오스 섬유를 열처리하여 얻은 새로운 구조의 하니컴 탄화체를 이용하며, 상기 탄화체의 표면에 나노 크기의 니켈 촉매를 코팅하여 새로운 형태의 촉매반응 장치를 구성하며, 셀룰로오스 탄화체의 표면에 코팅된 니켈 나노 촉매만을 선택적으로 가열시킬 수 있는 유도가열 장치를 구비하는 것을 특징으로 한다.
Abstract:
PURPOSE: A method for fabricating a sheet of high performance containing carbon aerogel of fiber form is provided to resolve a problem of electrode performance reduction. CONSTITUTION: A method for fabricating a carbon aerogel sheet comprises: a step of dissolving hydrophilic polymers in a first solvent to prepare a polymer solution; a step of dissolving resorcinol and formaldehyde in a second solvent to prepare RF(resorcinol formaldehyde) precursor solution; a step of mixing the polymer solution and RF precursor solution to prepare a spinning solution; and a step of electrospinning to prepare a sheet of fiber web form; and a step of performing thermal treatment of the sheet.
Abstract:
본 발명은 금속촉매 나노입자가 탄소나노튜브 내부 채널의 표면에만 선택적으로 담지된 탄소나노튜브 촉매 및 이의 제조방법에 관한 것으로, 보다 상세하게는, 특정한 전처리를 통하여 탄소나노튜브의 내부 표면에 결함(defect)을 만들어 준 후, 전처리된 탄소나노튜브에 기상의 금속 전구체를 흘려주어 화학기상증착법으로 탄소나노튜브의 내부 채널에만 금속촉매 나노입자가 담지되도록 제조한, 우수한 선택적 촉매반응활성 및 내구성을 갖는 금속촉매 나노입자가 담지된 탄소나노튜브 촉매 및 이의 제조방법에 관한 것이다. 탄소나노튜브, 금속촉매 나노입자, 화학기상증착법, 탄소나노튜브 촉매, 내구성, 선택적 촉매반응활성
Abstract:
PURPOSE: A catalytic combustor for a molten carbonate fuel cell(MCFC) is provided to completely burn combustible gas inside blast furnace gas generating from the entrance of an anode of the MCFC, and to use the heat from the MCFC as a heating source of air. CONSTITUTION: A catalytic combustor(1) for a molten carbonate fuel cell(MCFC) combusting mixture gas containing air and blast furnace gas discharged from an anode of a fuel cell stack comprises the following: a gas supplying unit(2) including a pathway to separately supply the air and the blast furnace gas; a mixing unit(3) including a mixing divide with a venturi mixer function and a rob mixer function; a second mixing diffusion unit(4) including a diffusing pipe structure to supply the mixture gas to a flowing area; and a catalytic combustion unit(5) including a combustion catalyst layer(51). The catalytic combustion unit is installed on the entrance of the anode and a cathode.
Abstract:
PURPOSE: A cellulose carbide with a graphite nanostructure thereon, and a producing method thereof are provided to ensure excellent electrical, physical, and chemical properties as well as mechanical strength. CONSTITUTION: A method for producing a cellulose carbide with a graphite nanostructure thereon comprises the following steps of: washing a cellulosic fiber, drying it at room temperature, and putting it into a reactor; raising the temperature of the reactor; primarily heat-treating the cellulosic fiber under hydrogen atmosphere in order to produce a first carbide; and secondarily heat-treating the carbide under argon atmosphere so as to produce a second carbide having a graphite nanostructure thereon.
Abstract:
본 발명은 기존에 연료전지 전극으로 사용되는 탄소 종이를 대체할 수 있는 새로운 고성능 셀룰로스 전극에 관한 것으로, 셀룰로스 섬유를 원료로 이용하여 이를 일정한 길이로 절단한 후 접착하여 판상으로 제조하거나, 또는 직접적인 직조를 통하여 판상으로 제조하고, 여기에 탄소나노튜브를 직접적으로 성장시키고, 탄소나노튜브의 표면에 화학기상증착법을 사용하여 백금 나노 촉매를 담지시킨 연료전지용 전극의 제조 방법, 셀룰로스 섬유를 포함하여 이루어진 전극 및, 셀룰로스의 연료전지용 전극으로서의 용도에 관한 것이다. 본 발명은, 새로운 기능성 소재로서 마이크로 세공을 가지고 있는 다공성 셀룰로스 섬유를 연료전지의 전극재료로 사용함으로써 연료전지 전극의 제조 비용을 절감하는 동시에 전극의 성능을 향상시킬 수 있다. 셀룰로스 섬유, 전극, 탄소나노튜브, 전기화학적 담지, 화학기상증착법, 백금 촉매, 연료전지
Abstract:
An ignition system for micro combustor and a micro combustion device using the same is provided that the maximum ignition efficiency can be obtained from the minimum heater. An ignition system for micro combustor is installed at both end of a combustion chamber(5) of a micro combustion device. The ignition system for micro combustor comprises a heater(17) which has a heating wire(11) for local heating and a lead wire(12) which supplies current and voltage to the heating wire, and a support frame which supports the heater and is installed at the combustion chamber.
Abstract:
A catalytic burner using a mat type combustion catalyst is provided to maintain catalyst temperature over a reaction temperature at which the combustion occurs stably by placing an external insulation material on the catalyst layer. A premix type catalytic burner(1) using a mat type combustion catalyst comprises a mixed gas supply part(2) supplying the mixed gas, and a catalytic burner body(3) in which a fiber mat catalyst(32) is positioned and an external insulation material(31) is installed within the catalytic burner body in order to be positioned in the outer side of the fiber mat catalyst. The fiber mat catalyst part has a multi-layered structure consisting of a catalyst layer containing catalyst and a retaining layer without catalyst.
Abstract:
A method for synthesizing carbon nanowires directly on glass fibers or carbon fibers is provided to obtain a nanocomposite having excellent strength, elasticity and tensile property derived from glass fibers or carbon fibers, and to realize increased adhesion between a functional polymer and the nanocomposite when producing a reinforced composite. A method for synthesizing carbon nanowires such as carbon nanotubes or carbon nanofibers directly on glass fibers or carbon fibers as a support comprises the steps of: coating metal the surface of the glass fiber support or carbon fiber support with metal catalyst particles; and synthesizing carbonaceous nanowires such as carbon nanofibers or carbon nanotubes directly on the surface of the glass fiber support or carbon fiber support by way of the coated support with no dispersion step to obtain a nanocomposite. The carbon nanofibers or carbon nanotubes are controlled to a desired growth distribution density or shape by adjusting at least one factor selected from concentration, coating process, production temperature and time.