Abstract:
본 발명은 천연가스의 혼합개질용 촉매, 이의 제조방법 및 상기 촉매를 이용한 천연가스의 혼합개질방법에 관한 것으로서, 좀더 상세하게는 알루미나 촉매 지지체의 표면을 마그네슘 화합물로 수식하여 마그네슘 알루미네이트의 스피넬 구조를 갖게 하고, 이 지지체에 촉매 활성 성분으로서 니켈(Ni)을, 촉매 증진제로서 귀금속(PM)과 칼슘(Ca)을 담지하며, 니켈과 칼슘의 일부는 지지체와 고온에서 반응하여 부분적으로 스피넬 구조를 갖게 함으로써, 코크 생성에 대하여 우수한 내구성과 높은 촉매 활성을 지니게 되어 반응성 및 안정성이 우수한 천연가스의 혼합개질용 촉매, 이의 제조방법 및 상기 촉매를 이용한 천연가스의 혼합개질방법에 관한 것이다.
Abstract:
The present invention relates to a catalyst for reforming natural gas, a manufacturing method thereof and a reforming method for natural gas using the catalyst and, more specifically, to a catalyst for reforming natural gas having a spinel structure of magnesium aluminate by modifying the surface of an alumina catalyst supporter with a magnesium compound, makes the supporter be supported with nickel (Ni) as a catalyst-active component and precious metal (PM) and calcium (Ca) as catalyst enhancers, partially has a spinel structure by making the part of the nickel and calcium react with the supporter at high temperatures, exhibits excellent durability and high catalyst activity on coke production and has excellent reactivity and stability; a manufacturing method thereof; and a reforming method for natural gas using the catalyst. [Reference numerals] (AA) Strength (a.u.); (BB) Spinel; (CC) Gamma-alumina; (DD) Example 4; (EE) Example 2; (FF) Example 1; (GG) Catalyst supporter
Abstract:
PURPOSE: A carbon dioxide tolerant microorganism and a method for fixing carbon dioxides using the same are provided, therefore, the environmental pollution caused by carbon dioxides can be solved and the fermented culture of the microorganism can be added into an animal feed-stuff. CONSTITUTION: The carbon dioxide tolerant microorganism Chlorella sp. KR-1(KCTC 0426BP) is prepared by the steps of: taking a sample from the soil and river and incubating it in MBM broth containing 250 mg/l of KNO3, 75 mg/l of KgSO4·7H2O, 75 mg/l of KH2PO4, 175 mg of K2HPO4, 25 mg of NaCl, 10 mg of CaCl2·2H2O, 2 mg of FeSO4·7H2O and 1 ml of A-5 solution with supplying carbon dioxide mixed gas for 3 weeks; incubating the samples on Detmer solid medium at 25 to 27 deg. C for 2 to 3 weeks; isolating colonies grown on Detmer solid medium; and incubating colonies in MBM broth. The carbon dioxide is fixed by incubating Chlorella sp. KR-1(KCTC 0426BP) in the presence of carbon dioxide in the concentration of 10 to 70%.
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.
Abstract:
본 발명은 이산화탄소 내성 신균주와 이러한 신균주를 이용한 이산화탄소의 고정화방법에 관한 것으로서, 더욱 상세하게는 고농도 이산화탄소에 대한 내성이 우수한 신균주 클로렐라 속(Chlorella sp.) KR-1 (KCTC0426BP)와, 이러한 신균주를 이용하여 고농도의 이산화탄소를 안정적으로 고정화하는 방법, 그리고 이러한 신균주를 동물사료로 사용하는 용도에 관한 것이다.