摘要:
본 발명은 복합 산화물, 그의 제조 방법 및 메탄 선택성 산화 촉매로서의 용도에 관한 것이다. 상기 복합 산화물은 일반식 RhR x Mo y V z O δ-α [여기에서, 각 기호는 상세한 설명에서 정의한 바와 같음]으로 나타낸 조성을 갖는다. 메탄 선택성 산화촉매로서 사용했을 때, 본 발명의 복합 산화물은 목적하는 생성물에 높은 선택성 및 높은 메탄 전환율을 제공한다.
摘要:
The present invention relates to a mesoporous nickel-iron-ruthenium-alumina xerogel catalyst and a manufacturing method thereof and, more specifically, to a mesoporous nickel-iron-ruthenium-alumina xerogel catalyst comprising 49-68.8 parts by weight of alumina, 30-40 parts by weight of nickel, 1-20 parts by weight of iron and 0.2-1.0 parts by weight of ruthenium. Additionally, the manufacturing method for the catalyst comprises: an alcohol heating step; an aluminum precursor dispersing step; a sol forming step; a sol cooling step; a metal precursor adding step; a sol hydration and condensation step; a gel aging step; a gel drying step; and a gel heat treating step. The catalyst of the present invention is able to improve a conversion rate of carbon dioxide by having high activity at low temperatures and is able to manufacture methane at high yield by being used in the methanation reaction of carbon dioxide. The manufacturing method for the catalyst of the present invention exhibits excellent reproducibility and provides the mesoporous nickel-iron-ruthenium-alumina xerogel catalyst through a simple process.
摘要:
본 발명은 백금, 레늄, 및 로듐으로 이루어진 군에서 선택된 2 종이상의 복합금속이 메조다공성 탄소로 이루어진 담체에 담지된 수상개질 반응의 촉매에 관한 것이다. 수상개질 반응시 안정적인 담체로서, 균일한 기공을 갖는 메조 다공성 탄소 물질을 사용하며, 또한 단독 금속이 아닌 복합금속을 사용하여 수상개질반응 내에서 수소의 전환율 및 생성속도를 크게 향상시킨 것에 본 기술의 특징이 있다.
摘要:
PURPOSE: A catalyst composition and a supported catalyst including the same are provided to offer good activity by adding noble metals in the catalyst composition and zeolite as a carrier supporting the noble metals. CONSTITUTION: A catalyst composition includes zeolite, noble materials dipped in the zeolite, and reactive metals. A specific surface area of the zeolite is 600 m^2/g or more. The zeolite is mordenite, ferrierite, ZSM-5, β - zeolite, ga- silicate, Ti- silicate, Fe- silicate or Mn - silicate. The noble materials are ruthenium, rhodium, palladium, silver, osmium, iridium, platinum or gold. The noble materials of 0.25 ~ 1 parts by weight are included in the zeolite 100 parts by weight.
摘要:
A visible light reaction-typed hybrid photocatalyst, paint compositions using the same, and a manufacturing method thereof are provided to remove carbon dioxide, nitric oxide, volatile organic compounds in the air. A manufacturing method of a visible light reaction-typed hybrid photocatalyst includes the following steps of: mixing rhodium 0.01, titanium oxide 12 ~ 18 weight%, tungsten oxide 20 ~ 30 weight%, vanadium oxide 8 ~ 12 weight%, potassium silicate 27 ~ 19 weight%, and water 12.8 ~ 32 weight%; heat-treating a mixture at the temperature of 400 ~ 650°C; pulverizing a sintered material to 40 ~ 200 mesh granularity size; and mixing the pulverized sintered material 35 ~ 45 weight%, platinum chloride aqueous solution 5 ~15 weight%, and a binder 40 ~ 60 weight%.