Abstract:
본 발명은 금속-공기 전지용 양극 촉매 및 그 제조방법, 이를 이용한 금속-공기 전지에 관한 것으로, 더욱 상세하게는 전지의 충-방전 저장 용량을 향상시키고, 충-방전 사이클 수명을 증가시킬 수 있는 양극 촉매 및 그 제조방법, 이를 이용한 금속-공기 전지에 관한 것이다. 상기 양극 촉매는 층상 페로브스카이트(layered perovskite) 구조로써, 란탄 및 니켈 산화물을 포함하는 것을 특징으로 한다. 상기 층상 페로브스카이트를 포함하는 양극 촉매를 활용하여 금속-공기 전지용 양극을 제조하고, 이를 이용해 금속-공기 전지를 제공한다. 이는 금속-공기 전지의 충-방전 분극이 감소하고, 저장 용량을 높일 뿐만 아니라 충-방전 사이클 수명을 향상시킬 수 있다.
Abstract:
본 발명은 경유 재순환 장치 및 그를 갖는 합성연료 제조 시스템에 관한 것으로, 슬러리 기포탑 반응기(slurry bubble column reactor; SBCR)에서 생성되는 경유를 재순환시켜 반응기로 안정적으로 공급하면서 경유의 유량을 정밀하게 제어하면서 공급하기 위한 것이다. 본 발명에 따른 합성연료 제조 시스템은 슬러리 기포탑 반응기와 경유 재순환 장치를 포함한다. 슬러리 기포탑 반응기는 피셔-트롭쉬(Fischer-Tropsch) 합성반응으로 탄화수소 화합물을 생성한다. 그리고 경유 재순환 장치는 슬러리 기포탑 반응기에서 배출되는 기체 생성물로부터 경유를 분리하고, 분리한 경유를 증발시켜 합성가스와 함께 슬러리 기포탑 반응기로 공급한다.
Abstract:
The present invention relates to a manufacturing method of a carbide-derived carbon based negative electrode active material which includes the steps of producing carbide-derived carbon and of expanding pores of the carbide-derived carbon. It is preferred that the step of expanding pores of the carbide-derived carbon is performed by an activation process in which the carbide-derived carbon is heated in air. According to the present invention, pores of the carbide-derived carbon can be expanded by adding the activation process in the manufacturing step. Moreover, by applying the carbide-derived carbon of which pores are expanded as a negative electrode active material, a lithium secondary battery with increased charging/discharging efficiency can be manufactured.
Abstract:
PURPOSE: A method for preparing an anode active material is provided to easily prepare titanium oxide with a size of several nanometers in a nitrogen-doped porous carbon nanotube, and allow an appropriate control of the nitrogen content, the titanium oxide content, the pore size, the diameter of the carbon nanotube, and the size of titanium oxide. CONSTITUTION: A method for preparing an anode active material comprises the following steps. An electro-spinning solution is prepared by mixing a first solution in which a metal oxide precursor is dissolved, a second solution in which a polymer as a carbon nanotube precursor is dissolved, and an ionic liquid solution for nitrogen doping and forming of a porous structure (S10). The electro-spinning solution is electro-spun to prepare a composite material of metal oxide-nitrogen-porous carbon nanotube (S20). The composite material is thermally treated (S30). Further, an anode is formed by coating a current collector with a slurry in which the anode active material, a conducting agent, a binding agent, and a solvent are mixed. [Reference numerals] (AA) Start; (BB) End; (S10) Produce electro-spinning solution; (S20) Produce metal oxide-nitrogen-porous carbon nanofiber composite; (S30) Thermally treat composite
Abstract:
PURPOSE: A highly loadable and dispersive metal-oxide/carbon nano catalyst carrier and a production method thereof are provided to easily obtain catalysts in which metal-oxide particles are well dispersed along with carbon residues by removing excessive carbon substances which exists in a porous carbon molding frame. CONSTITUTION: A production method of highly loadable and dispersive metal-oxide/carbon nano catalyst carrier comprises the following steps; a mixing step which mixes metal-salt hydrate with a carbon molding frame in a porous structure; an impregnation step which impregnates the metal-salt hydrate in the carbon molding frame after melting and impregnating around the melting point of the metal-salt hydrate; a drying step which dehydrates the obtained mixed powder; and a removal step which forms metal oxide particles by sintering the carbon molding frame, in which the metal-salt hydrate is loaded, and removes carbons from the carbon molding frame leaving the partial amount of carbon. A sintering temperature above is ranged from 200 to 700 deg. C, and a sintering period is ranged from 30 to 48 hours. [Reference numerals] (AA) Melt-infiltration; (BB) High temperature sintering under the atmospheric condition; (CC) Removal of a carbon molding frame; (DD) Active oxidized metal particles; (EE) Remaining carbon(as a spacer)
Abstract:
본 발명은 석탄 합성가스를 슬러리에 함유된 촉매와 반응시켜 합성연료를 생성하는 재분산수단을 적용한 트레이 기포탑 반응기에 관한 것으로, 이를 위해 촉매를 함유하는 슬러리가 저장된 기포탑 반응기 본체;와, 유입관을 통해 공급되는 합성가스의 기포입자를 균일한 기포입자로 전환시켜 반응기 본체의 내부로 공급할 수 있도록 상기 반응기 본체의 저면에 배치되는 분산수단; 상기 반응기 본체의 내부를 트레이 형태로 구획되게 배치되며, 상기 분산수단으로부터 공급되는 합성가스의 기포 입자를 균일하게 재분산시키는 적어도 1개 이상의 재분산수단;과, 상기 반응기 본체의 내부 상측에 배치되어 촉매는 필터링하고 반응되어 생성된 합성연료만을 외부로 유출시키는 필터링수단; 및 상기 반응기 본체의 상단에 연결되어 미반응 합성가스 및 반응시 생성되는 화학가스를 외부로 배출시키는 유출관;을 포함하여 이루어지며, 상기 재분산수단은 내부 기공이 하단부에서 상단부로 연속적으로 불규칙하게 이어지는 다공성 금속 구조체와, 상기 다공성 금속 구조체의 상부에 결합되는 제 2분산디스크로 이루어지며, 여기에 상기 다공성 금속 구조체의 하부에 배치되는 다공성 촉매 금속 구조체를 더 포함하되, 상기 다공성 촉매 금속 구조체는 다공성 금속 구조체의 표면에 촉매층이 코팅되어 구성되는 것을 특징으로 한다.
Abstract:
PURPOSE: A catalyst for the Fischer-Tropsch process and a manufacturing method thereof are provided to accelerate the carbide forming reaction to increase the generation of hydrocarbon with a long chain like wax, and to be able to have the similar activity to the catalysts manufactured by co-precipitation by reducing the catalyst under the condition that synthetic gas (CO+H2) exists at a relatively low temperature of 350-400deg.C. CONSTITUTION: A catalyst for the Fischer-Tropsch process includes an iron compound as an active material, sodium and sodium hydroxide as co-catalyst, and a carrier. A manufacturing method of the catalyst for the Fischer-Tropsch process comprises the following steps: a step of removing moisture and foreign substances attached on the surface of the carrier by plasticizing the carrier; a step of stirring the plasticized carrier under the nitrogen atmosphere; a step of manufacturing a melted and dipped carrier by adding sodium and sodium hydroxide in the stirred carrier; a step of dipping an iron precursor and a copper precursor in the melted and dipped carrier; and a step of drying and plasticizing the carrier in which an iron precursor and a copper precursor are dipped.
Abstract:
PURPOSE: A manufacturing method for a metal- or metal oxide-supported catalyst using a melt-infiltration process with a metal hydrate salt and a metal- or metal oxide-supported catalyst thereof are provided to easily and quickly mass produce the metal- or metal oxide-supported catalyst by using a nitrate hydrate metal salt or a chloride hydrate metal salt with a low melting point. CONSTITUTION: A manufacturing method for a metal- or metal oxide-supported catalyst using a melt-infiltration process with a metal hydrate salt comprises the following steps: The metal hydrate salt is mixed with a metal substrate with a porous structure. After the mixing process, the mixture is melted at the melting point of the metal hydrate salt such that the metal hydrate salt infiltrates into the substrate. The metal hydrate salt infiltrated in the supporter is plasticized at a high temperature and chagrined to nanoparticles. The metal hydrate salt has a melting point within 35 - 120 deg. C. [Reference numerals] (a) Step of mixing metal hydrate salt and a support; (b) Step of carrying by melting impregnation; (c) Step of nanoparticulation by plasticizing
Abstract:
PURPOSE: An apparatus and a method for separating products from a Fischer-Tropsch process are provided to continuously product the products of the Fischer-Tropsch process containing wax by effectively discharging liquid products from the upper side of a reactor. CONSTITUTION: An apparatus for separating products from a Fischer-Tropsch process includes a temperature sensor(110), a porous inner filter(120), a collecting chamber(200), and a pressure sensor(300). The temperature sensor is arranged on the upper side of a reactor(100) and detects the temperature of gaseous products and liquid products. The inner filter is arranged in the reactor and adjusts the discharging amount of the products. The collecting chamber collects the liquid products from the reactor. The pressure sensor detects the pressure of the collecting chamber.