Abstract:
본 발명은 무기 분말 입자의 표면을 실리콘-탄소 복합체로 코팅하는 방법 및 상기 방법으로 코팅된 무기 분말 입자에 관한 것으로, 더욱 상세하게는 무기 분말 입자와 고형화된 실리콘 유기 고분자를 혼합한 다음 상기 혼합물을 가열함으로써 무기 분말 입자의 표면을 실리콘-탄소 복합체로 코팅하는 방법 및 상기 방법으로 코팅된 무기 분말 입자에 관한 것이다.
Abstract:
PURPOSE: A method of coating the surface of inorganic powder particles with a silicon-carbon composite, and inorganic powder particles surface-coated with the silicon-carbon composite manufactured thereby are provided to form a thin and uniform coating film compared to a liquid coating method, to form a superhydrophobic silicon-carbon composite coating film having a high stability to ultraviolet rays, and to enable the silicon-carbon composite coating to be used as anti-oxidation layer of a sample. CONSTITUTION: A method of coating the surface of inorganic powder particles with a silicon-carbon composite comprises a step of mixing inorganic powder particles and solidified silicone organic polymers, and a step of heating the mixture. The inorganic powder particles are at least one selected from the group consisting of titanium dioxide, zinc oxide, zirconium oxide, copper, nickel, carbon fibers, and activated charcoal. The solidified silicone organic polymers are obtained by adding a curing agent in the silicone organic polymers. The silicone organic polymers are polydimethylsiloxane, polyvinylsiloxane, polyphenylmethylsiloxane, or their combination. The curing agent is organic peroxide. The heating is performed at 150-300 deg. C.
Abstract:
본 발명은 니켈 표면의 일부분에 금속 산화물이 증착되어 있는 것을 특징으로 하는 이산화탄소 개질 촉매 및 원자층 증착법을 사용하는 이의 제조방법에 관한 것이다. 또한, 본 발명은 밸브의 미세 조절을 통해 표면적이 작은 시료뿐만 아니라 적은 양의 시료에 대해서도 촉매 활성을 평가할 수 있는 본 발명에 따른 이산화탄소 개질 촉매의 촉매 반응성을 평가하는 장치를 더 제공한다. 본 발명에 따른 이산화탄소 개질 촉매는 코크스 침적을 효과적으로 방지하고, 이산화탄소 개질 반응 시에도 거친 표면 구조를 유지함으로써 넓은 표면적을 가진다는 점에서 촉매의 효율을 향상시킬 수 있다.
Abstract:
PURPOSE: A metal oxide deposited nickel-based carbon dioxide reforming catalyst, a manufacturing method of the same, and an apparatus for evaluating carbon dioxide reforming reactivity using the same are provided to improve the efficiency of the catalyst. CONSTITUTION: A carbon dioxide reforming catalyst includes metal oxides deposited on a part of the surface of nickel. The metal oxides are selected from a group including TiO_2, ZrO_2, Al_2O_3, Fe_2O_3, Fe_3O_4, Ga_2O_3, SnO_2, Sb_2O_3, SiO_2, MnO_2, Mn_2O_3, Mn_3O_4, NiO_2, CeO_2, Y_2O_3, La_2O_3, K_2O, MgO, Cr_2O_3, La_2O_3, Ce_(1-x)Zr_xO_2, LaAl_2O_4, and LaNi_2O_4. The deposition thicknesses of the metal oxides are in a range between 1 and 20nm. The metal oxides are deposited in the shapes of particles and deposited on the surface of the nickel by an atomic layer deposition method.
Abstract:
본 발명은 니켈 산화물 촉매의 크기를 나노크기로 제조하여 촉매활성을 증가시키고, 또한 촉매의 안정도를 향상시키는, 니켈 산화물 촉매의 제조방법을 제공한다. 또한, 촉매활성 및 촉매의 안정도가 향상된 본 발명의 제조방법에 따라 제조된 니켈 산화물 촉매를 제공한다.
Abstract:
PURPOSE: A manufacturing method of a nickel oxide catalyst is provided to produce a nickel oxide catalyst in the nano-size, to increase catalyst activation and to improve stability of the catalyst and a nickel oxide catalyst produced in the nano-size by using atomic layer deposition is also provided. CONSTITUTION: A manufacturing method of a nickel oxide catalyst comprises the steps of: positioning mesopore silica powder in a reactor, injecting nickel precursors into the reactor to be exposed in the mesopore silica powder for depositing nickel in the pore of the mesopore silica, injecting nitrogen gas into the reactor for purging process and inserting oxygen precursors into the reactor to be exposed to the deposited nickel and depositing nickel oxide.