Abstract:
본 발명은 희토류 금속을 함유하여 내열성이 향상된 팔라듐-로듐계 자동차용 촉매에 관한 것으로, 더욱 상세하게는 담체, 전술한 담체의 외표면에 형성되며, 팔라듐이 함유되는 제1코팅층 및 전술한 제1코팅층의 외표면에 형성되며, 로듐이 함유되는 제2코팅층을 포함하여 이루어진다. 본 발명에 따른 희토류 금속을 함유하여 내열성이 향상된 팔라듐-로듐계 자동차용 촉매는 조촉매로 종래에 사용되던 세륨, 지르코늄 이외에 란타늄, 네오듐 및 이트륨이 더 첨가되어 반응성 및 열적 내구성이 향상된다.
Abstract:
The present invention relates to a pre-treatment method for the synthesis of an electrode catalyst. More specifically, the method comprises a mixing step of mixing a carrier and a solvent; a homogenizing step of homogenizing the particle size of the mixture mixed through the mixing step; a dispersing step of dispersing the mixture homogenized through the homogenizing step; and an analyzing step of analyzing the particle size of the mixture dispersed through the dispersing step.
Abstract:
PURPOSE: A manufacturing method of a catalyst for fuel cells is provided to replace a platinum catalyst with palladium with low costs, thereby reducing manufacturing costs of catalysts while maintaining performance of the platinum catalyst. CONSTITUTION: A manufacturing method of a catalyst for fuel cells comprises a step of manufacturing a platinum-palladium synthesis precursor; a step of manufacturing the catalyst for fuel cells. The first step comprises a step of reacting palladium and acetic acid to prepare palladium-acetate; a step of reacting gold and amine-based organic materials, to manufacture platinum-amide; and a step of mixing the palladium-acetate and platinum-amide. [Reference numerals] (AA) Start; (BB) Carbon pre-treatment step; (CC) Precursor dispersion step; (DD) Stabilization step; (EE) Filtration and washing step; (FF) Drying step; (GG) End
Abstract:
본 발명은 비대칭 구조를 갖는 팔라듐계 가솔린 자동차용 촉매 및 그 제조방법에 관한 것으로, 더욱 상세하게는 담체, 전술한 담체의 외표면에 형성되는 제1코팅층 및 전술한 제1코팅층의 외표면에 형성되는 제2코팅층으로 이루어지며, 담체의 외표면에 제1코팅액을 도포하는 제1코팅단계, 전술한 제1코팅액 도포된 담체의 외표면에 제2코팅액을 도포하는 제2코팅단계 및 전술한 제2코팅액이 도포된 담체를 80 내지 120℃의 온도로 가열하여 수분을 제거하는 건조단계 및 전술한 건조단계를 거친 담체를 500 내지 600℃의 온도로 가열하여 소성하는 소성단계를 통해 제조된다.
Abstract:
PURPOSE: A palladium catalyst with the optimized particle sizes of noble metals is provided to improve the initial purifying efficiency of the catalyst after deterioration by optimizing interaction between aluminum oxide and noble metals. CONSTITUTION: A palladium catalyst includes a carrier(10), a first coating layer(20), and a second coating layer(30). The first coating layer is formed at the outer surface of the carrier. The first coating layer includes barium oxide and palladium. The second coating layer is formed at the outer surface of the first coating layer. The second coating layer includes barium oxide and palladium. The thickness of the first coating layer is between 100 and 110 g/L. The thickness of the second coating layer is between 130 and 140 g/L.
Abstract:
PURPOSE: The palladium-based catalyst of an asymmetric structure for gasoline vehicles and a method for manufacturing the same are provided to improve the efficiency of purification by asymmetrically forming two coating layers with different coating component contents on the surface of a carrier. CONSTITUTION: The palladium-based catalyst of an asymmetric structure for gasoline vehicles includes a carrier, a first coating layer formed on the outer surface of the carrier, and a second coating layer formed on the outer surface of the first coating layer(S101, S103). The first coating layer includes 70-71 parts by weight of aluminum, 4-4.5 parts by weight of strontium oxide, 24-25 parts by weight of cerium oxide, and 0.5-1 parts by weight of palladium. The second coating layer includes 54-55 parts by weight of aluminum, 10-11 parts by weight of strontium oxide, 32-33 parts by weight of cerium oxide, and 2-2.5 parts by weight of palladium. A drying process and a plasticizing process are implemented(S105, S107).
Abstract:
PURPOSE: A manufacturing method of electrode catalyst is provided to have excellent diffusion efficiency by applying the duster and ultrasonic device at the same time, and an excellent production efficiency by using the centrifuge step and washing process, thereby enabling the mass production. CONSTITUTION: A manufacturing method of electrode catalyst comprises the steps of: pre-processing a mixture of ethylene glycol and a support element(S101), injecting platinum precursor to the pre-processed mixture and performing mixing(S103), putting acid solution into the mixture for stabilization(S105), centrifugally separating the stabilized mixture to extract electrode catalyst(S107), washing the electrode catalyst(S109), and heating the washed electrode catalyst(S111). [Reference numerals] (AA) Start; (BB) End; (S101) Pretreatment step; (S103) Platinum precursor injection step; (S105) Stabilization step; (S107) Centrifugal step; (S109) Cleaning step; (S111) Heat treatment step
Abstract:
PURPOSE: A manufacturing method of a highly dispersed platinum-supported catalyst is provided to provide a highly dispersed platinum-supported catalyst with excellent durability and activity by using materials such as carbon nanotubes, carbon fiber, carbon black which are not easily degradable even under oxidation atmosphere of a reduction electrode. CONSTITUTION: A manufacturing method of a highly dispersed platinum-supported catalyst comprises: a mixture preparation step(S101) mixing a platinum mixture, sodium hydroxide and an mine mixture; a pre-treatment step(S103) treating a carrier with ethylene glycol; a platinum dispersion step(S105) dispersing the mixture in the mixture preparation step into the carrier of the pre-treatment step; a stabilization step(S107) putting acid solution into the carrier passed through the platinum dispersion step; a filtering and washing step(S109) filtering and cleaning the stabilized carrier; a heat treatment step(S111) heating the cleaned carrier; and a pulverization step(S113) pulverizing the heat-treated carrier. [Reference numerals] (AA) Start; (BB) End; (S101) Mixture preparation step; (S103) Pre-treatment step; (S105) Platinum dispersion step; (S107) Stabilization step; (S109) Filtering and cleaning step; (S111) Heat treatment step; (S113) Pulverization step
Abstract:
본 발명은 백금 및 팔라듐을 이용한 디젤자동차용 촉매의 제조방법에 관한 것으로, 더욱 상세하게는 팔라듐이 고착된 지지체 분말을 제조하는 팔라듐고착분말제조단계, 전술한 팔라듐 분말이 고착된 지지체 분말, 증류수 및 백금용액을 혼합하여 백금팔라듐 예비혼합물을 제조하는 예비혼합물제조단계, 전술한 예비혼합물 및 백금용액으로 이루어진 혼합물에 질산을 첨가하는 질산첨가단계, 전술한 질산첨가단계를 거친 혼합물에 촉매지지체를 함침하고 교반하는 함침교반단계 및 함침교반단계를 거친 촉매혼합물을 소성하는 소성단계를 포함하여 이루어진다.