Abstract:
PURPOSE: An iron-based catalyst for Fischer-Tropsch synthesis and a manufacturing method thereof are provided to increase catalyst stability with good selectivity of liquid hydrocarbon and activation, and to offer a high conversion rate of carbon monoxide. CONSTITUTION: A manufacturing method of an iron-based catalyst for Fischer-Tropsch synthesis includes a step for producing nano particles including iron-based catalyst components, and a step for producing a catalyst by supporting the nano-particles on a catalyst supporter. The iron-based catalyst components have activity on reaction of the Fischer-Tropsch.
Abstract:
A method for preparing colloidal oil-soluble iron oxide nano-particle with high dispersity and stability is provided to improve dispersity of the particle in organic solvent and to employ the particle in magnetic recording medium, printer ink, paint additive, ferrofluild, etc. by preparing iron hydroxide slurry and capping surface of the slurry in fatty acid and petroleum solvent to form the nano-particle. The method includes the steps of: preparing iron hydroxide by reacting iron precursor compound with basic compound containing alkaline metal, alkaline earth metal or ammonium cations to form microfine iron hydroxide, precipitating and washing the product; preparing amorphous colloidal iron hydroxide nano-particles by blending the washed product with C10 to C30 fatty acid and petroleum solvent; and preparing iron oxide nano-particles after separating the colloidal iron hydroxide nano-particles into water phase and organic phase, removing the water phase and water content from the organic phase.
Abstract:
본 발명은 고 친유성 산화마그네슘 나노입자의 제조 방법에 관한 것으로서, 더욱 상세하게는 마그네슘 화합물과 염기를 반응하여 침전 및 세척한 다음, 저온 소성하여 산화마그네슘을 제조하고, 상기 제조된 산화마그네슘을 특정의 지방산과 석유계 용제를 이용하여 표면을 캡핑(capping)처리하는 일련의 공정으로, 구형이고, 균일한 나노 입자 크기를 가져 단위 부피 당 차지하는 입자의 표면적이 클 뿐만 아니라 표면처리에 의해 유계 용제내에서 분산성이 종래에 비해 월등히 향상되어, 내열 재료, 고온 절연 및 광학 등의 여러 산업 분야 특히, 연료 첨가제 분야에 매우 유용한 고 친유성 산화마그네슘 나노입자의 제조 방법에 관한 것이다. 저온 소성, 표면처리, 친유성, 산화마그네슘 나노입자
Abstract:
The present invention relates to a method for manufacturing zeolite having a mesopore, and more particularly, to a method for manufacturing zeolite having a mesopore by a simple method without using an expensive organic amine template or a surfactant. [Reference numerals] (AA) Mesopore volume (cm^3/g); (BB) Example 2; (CC) Example 3; (DD) Example 6; (EE) Comparative example 1; (FF) Comparative example 4; (GG) Mesopore diameter
Abstract:
본 발명은 피셔-트롭쉬(Fischer-Tropsch, FT) 합성용 코발트계 촉매 및 이의 제조 방법에 관한 것으로서, 구체적으로는 미리 피셔-트롭쉬 반응에 활성이 있는 코발트계 촉매성분을 포함하는 나노입자를 제조한 후 이들을 촉매 지지체에 담지하여 제조되는, 일산화탄소의 높은 전환율, 액체탄화수소로의 선택성 및 촉매 안전성을 갖는 피셔-트롭쉬 합성용 코발트계 촉매 및 이의 제조 방법에 관한 것이다. 피셔-트롭쉬 반응, 나노입자, 코발트계 촉매
Abstract:
PURPOSE: A cobalt-based catalyst for Fischer-Tropsch synthesis and a manufacturing method thereof are provided to offer good selectivity and catalyst stability of liquid hydrocarbon and the high conversion ratio of carbon monoxide. CONSTITUTION: A manufacturing method of a cobalt-based catalyst for Fischer-Tropsch synthesis includes a step for producing nano particles including cobalt-based catalyst components, and a step for producing the catalyst by supporting the nano particles in a catalyst support. In a second step, a support catalyst forming process, a non-polar solvent removal process, a support catalyst drying process, and a support catalyst sintering process are included.
Abstract:
본 발명은 고 친유성 산화마그네슘 나노입자의 제조 방법에 관한 것으로서, 더욱 상세하게는 마그네슘 화합물과 염기를 반응하여 침전 및 세척한 다음, 저온 소성하여 산화마그네슘을 제조하고, 상기 제조된 산화마그네슘을 특정의 지방산과 석유계 용제를 이용하여 표면을 캡핑(capping)처리하는 일련의 공정으로, 구형이고, 균일한 나노 입자 크기를 가져 단위 부피 당 차지하는 입자의 표면적이 클 뿐만 아니라 표면처리에 의해 유계 용제내에서 분산성이 종래에 비해 월등히 향상되어, 내열 재료, 고온 절연 및 광학 등의 여러 산업 분야 특히, 연료 첨가제 분야에 매우 유용한 고 친유성 산화마그네슘 나노입자의 제조 방법에 관한 것이다. 저온 소성, 표면처리, 친유성, 산화마그네슘 나노입자
Abstract:
PURPOSE: A manufacturing method of a fisher-tropsch reactive catalyst is provided to increase the activity of the catalyst by easily transferring resultant products and reactive products on the surface of the catalyst. CONSTITUTION: A manufacturing method of a fisher-tropsch reactive catalyst includes the following steps: a precursor solution of a reforming agent is impregnated into a support, and the impregnated product is dried and plasticized to reform the surface of the support; a cobalt precursor solution is impregnated on the surface reformed support, and the impregnated product is dried and plasticized to immerse cobalt; an enhancer precursor solution is impregnated on the cobalt carried support, and the impregnated product is dried and plasticized to become a catalyst; the catalyst is washed with a polar solvent to prepare suspension in which catalyst particles and microparticles of 10um or less separated from the surfaces of the catalyst particles are floated; and the catalyst particles are precipitated to remove the microparticles.
Abstract:
PURPOSE: An iron-based Fischer-tropsch catalyst with high catalytic activity and olefin selectivity, a preparation method thereof, and a reparation method of light olefin using syngas using the catalyst are provided to increase the life stability of the catalyst by reducing the occurrence of catalyst cracking phenomenon. CONSTITUTION: An iron-based catalyst for a Fischer-tropsch reaction includes potassium, iron, copper, manganese, and aluminum or silicon at the molar ratio of 1 to 6:100:1 to 6:1 to 20:5 to 40. The preparation method of the catalyst includes the following: acidic or neutral precursor compounds of the metals are dissolved in distilled water to prepare an acidic catalytic precursor solution; a basic precipitate is dissolved in distilled water to prepare a basic precipitating solution; the acid catalytic precursor solution is mixed with the basic precipitating solution, and the mixture is co-precipitated to obtain catalytic precursor slurry; the catalytic precursor slurry is aged to obtain a catalytic precursor precipitate; the precipitate is treated to obtain catalytic oxide; and a potassium compound aqueous solution is carried in the catalytic oxide, and the resultant product is dried and plasticized.