Abstract:
본발명은로듐이함유된카본나이트라이드불균일계촉매, 그의제조방법및 이를이용한아세트산의제조방법에관한것이다. 본발명에따른카본나이트라이드지지체에로듐이함유된불균일계촉매는종래반응물과촉매의상이동일한균일계촉매반응과다르게, 물또는알코올과같은액체성용매에용해되지않는지지체인카본나이트라이드지지체에로듐금속이포함되어있어, 여과와같은단순공정만으로도촉매와생성물간의분리가용이하여종래균일계촉매를사용한공정에서의단점을극복할수 있고, 로듐의리칭되는현상을최소화할수 있어, 종래균일계촉매반응의결과대비촉매의장기적안정성및 활성도가우수하므로, 메탄올과일산화탄소의카르보닐화반응을통한아세트산의제조에유용하게사용될수 있다.
Abstract:
PURPOSE: A catalyst manufacturing synthetic gas from natural gas and carbon dioxide and a manufacturing method thereof are provided to improve Fisher-Tropsch reactivity and to increase methanol synthesis yield by performing a steam reforming reaction and a methane and carbon dioxide reforming reaction. CONSTITUTION: A manufacturing method of a catalyst includes the following steps: maintaining the content of Ce or Ce-Zr on a MgAlOx support; maintaining the weight component ratio of Ce and Zr metal in a range of 0-4; and manufacturing a support by sintering a compound in a temperature of 600-900°C; and sintering the Ni as an active component in a temperature of 600-1000°C. The specific surface area of the catalyst is 80-200m^2/g.
Abstract:
PURPOSE: A cobalt/aluminum phosphate catalyst capable of manufacturing carbon fiber under low temperature region and a manufacturing method thereof are provided to manufacture the carbon fiber efficiently while using a Fisher-Tropsh catalyst. CONSTITUTION: A manufacturing method of a cobalt/aluminum phosphate catalyst includes the following steps: forming hydrogel by acidifying a compound after mixing precursors of which the P/Al molar ratio is adjusted; synthesizing an amorphous aluminium phosphate supporter having the specific surface area 150 ~ 300 m^2/g after drying the hydrogen under the temperature of 100 ~ 200 °C; and manufacturing the cobalt/aluminum phosphate catalyst by sintering the dried support under the temperature of 200 ~ 700 °C.
Abstract:
PURPOSE: Ficher-Tropsch catalysts for direct production of light olefins from syngas and a preparation method thereof are provided to improve stability and yield of the catalyst, and to increase a carbon monoxide conversion rate. CONSTITUTION: A manufacturing method of iron-based Ficher-Tropsch catalysts includes the following steps of: dissolving ethylene glycol in citric acid; removing water completely included in liquid by heating a mixed solution after agitating a compound and adding a calcium precursor aqueous solution in the citric acid and ethylene glycol liquid; gaining a calcium oxide supporter by sintering the compound in which the water is removed; and impregnating a metal precursor to the calcium oxide supporter. The catalyst further includes a step for sintering the manufactured catalyst at a temperature of 300 ~ 700 °C.
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:
Cobalt/zirconium-phosphorus/silica catalysts for Fischer-Tropsch synthesis and a preparation method thereof are provided to offer improved dispersibility and reducing property of cobalt and active components stably. A preparation method of a cobalt/zirconium-phosphorus/silica catalyst includes the following steps of: dipping a zirconium precursor and a phosphorus precursor in porous silica of which specific surface area is in a range of 200 ~ 800 m^2 / g; drying the porous silica in which a precursor is dipped in temperature of 100 ~200 °C; producing a zirconium - phosphorus/silica by firing the dried phosphorus silica; drying the dipped zirconium - phosphorus / silica support in 100 ~ 200 °C; and producing the cobalt/zirconium-phosphorus/silica catalyst by plasticizing the dried zirconium - phosphorus/silica support.
Abstract:
A manufacturing method of cobalt/phosphorus-alumina catalyst for Fischer-Tropsch synthesis is provided to secure stable selectivity to a liquid hydrocarbon more than C5 and to develop a competitive GTL process. A manufacturing method of cobalt/phosphorus-alumina catalyst for Fischer-Tropsch synthesis comprises steps of: mixing aluminium alcoholate with alcoholometer organic solvent and manufacturing aluminium alcoxide solution; mixing organic carboxylic acid 0.01 ~ 1 molar ratio and the water 2 ~ 12 molar ratio into the aluminium alcoxide solution, including a precursor and manufacturing boehmite sol in which the phosphorus is comprised; distilling and drying the boehmite sol in which the phosphorus is comprised and separating and collecting alcohol and manufacturing the boehmite in which powdered phosphorus is comprised; plasticizing the powdered boehmite and manufacturing a phosphorus-alumina support; dipping a cobalt precursor into the phosphorus-alumina support; and manufacturing the cobalt/phosphorus-alumina catalyst.
Abstract:
A cobalt/zirconia-alumina catalyst in which small pores and large pores coexist by supporting cobalt as an active component on a zirconia-alumina support which comprises ZrO2 and Al2O3 and has a specific surface area by a coprecipitation process, thereby containing the cobalt in the support is provided, and a method for producing liquid hydrocarbons from syngas using the catalyst is provided. In a catalyst for Fischer-Tropsch reaction in which cobalt as an active component is supported on a support, the catalyst for Fischer-Tropsch reaction is characterized in that the catalyst is a catalyst in which cobalt as an active component is supported on a mixed support of zirconia and alumina containing Al2O3 and ZrO2, bimodal structures in which small pores(PS1) with a relatively small pore size and large pores(PS2) with a relatively large pore size coexist are formed in the catalyst, the small pores(PS1) ranges from 2 to 10 nm and the large pores(PS2) ranges from 10 to 200 nm, the ZrO2 is contained in the amount of 1 to 30 wt.% relative to the Al2O3, and the cobalt is contained in the amount of 5 to 40 wt.% relative to the total support. A method for producing liquid hydrocarbons from syngas comprises subjecting syngas to Fischer-Tropsch reaction in the presence of the catalyst for Fischer-Tropsch reaction to produce liquid hydrocarbons. Further, a specific surface of the carrier is 150 to 400 m^2/g and a specific surface of the catalyst is 100 to 300 m^2/g.
Abstract:
본발명은로듐이함유된카본나이트라이드불균일계촉매, 그의제조방법및 이를이용한아세트산의제조방법에관한것이다. 본발명에따른카본나이트라이드지지체에로듐이함유된불균일계촉매는종래반응물과촉매의상이동일한균일계촉매반응과다르게, 물또는알코올과같은액체성용매에용해되지않는지지체인카본나이트라이드지지체에로듐금속이포함되어있어, 여과와같은단순공정만으로도촉매와생성물간의분리가용이하여종래균일계촉매를사용한공정에서의단점을극복할수 있고, 로듐의리칭되는현상을최소화할수 있어, 종래균일계촉매반응의결과대비촉매의장기적안정성및 활성도가우수하므로, 메탄올과일산화탄소의카르보닐화반응을통한아세트산의제조에유용하게사용될수 있다.