Abstract:
본 발명은 배연 가스 중에 포함된 유해 가스 중 질소 산화물을 제거하는데 유용한, 백금(Pt) 또는 백금과 다른 금속(예, 구리, 니켈, 코발트)이 공침된 실리코알 루미노프스페이트-34(SAPO-34)계 분자체 촉매 및 그의 제조 방법 및 그를 이용한 질소 산화물의 탈질 방법에 관한 것이다. 본 발명의 백금이 담지된 SAPO-34계 촉매는 SAPO-34 분자체에 백금 화합물 또는 백금과 다른 금속 화합물(Me=구리, 니켈, 코발트)을 물리적으로 균질하게 혼합한 후 압력을 가하여 두께 약 1㎜의 원판으로 만든 후, 이를 작은 조각으로 분쇄하고 산소를 유입하면서 승온시킨 다음 소성시켜 얻는다. 본 발명의 방법으로 제조된 촉매는 종래의 제올라이트계의 촉매에 비해서 열안정성이 높고, 수증기와 산소에 의해서도 활성이 잃지 않는 우수한 특성을 나타내므로 질소 산화물 제거에서 유용하다.
Abstract:
본 발명은 촉매 제조시 크롬 이온을 첨가함으로서 촉매 성능이 향상되고 수명이 연장된 실리카 고체 촉매, 이의 제조 방법 및 이를 사용하여 기상의 베크만(Beckmann) 전환 반응에 의하여 시클로헥사논 옥심(cyclohexanone oxime)으로부터 ε-카프로락탐(ε-caprolactam)을 제조하는 방법에 관한 것이다.
Abstract:
PURPOSE: Disclosed are a porous catalyst composed of pillard silica and metal oxide and a preparation method of ε-caprolactam from cyclohexanone oxime. CONSTITUTION: The porous catalyst is mainly composed of a pillard silica and a metal oxide. The sodium ion (Na+) on pillard silica is substituted with hydrogen ion (H+) of inorganic acid solution and a spacing width of pillard silica expands to 20 - 30 Å by using a long chained amine compound. And then metal oxide compounds are added in the spacing interval of the pillared silica. The added content of metal oxide is optimally 2 - 10 wt% and the surface area is 100 - 300 m2/g. The pillared silica is precipitated from kanemite, kenyaite, magadite, illite, octosilicate and Ta2O5, Nb2O5, TiO2 or SiO2 are used as metal oxides.
Abstract translation:目的:公开了由二氧化硅和金属氧化物组成的多孔催化剂和由环己酮肟制备的ε-己内酰胺的制备方法。 构成:多孔催化剂主要由二氧化硅和金属氧化物组成。 使用长链胺化合物,将二氧化硅上的钠离子(Na +)用无机酸溶液的氢离子(H +)代替,并将二氧化硅的间隔宽度扩大至20〜30。 然后在柱状二氧化硅的间隔间隔中加入金属氧化物。 金属氧化物的添加量最好为2〜10重量%,表面积为100〜300m2 / g。 柱状二氧化硅从可卡因,肯尼亚,magadite,伊利石,八硅酸盐和Ta 2 O 5,Nb 2 O 5,TiO 2或SiO 2中析出用作金属氧化物。
Abstract:
PURPOSE: Provided are a process for preparing a zeolite catalyst and a process for preparing ε-caprolactam from cyclohexanone oxime in the presence of the zeolite catalyst by Beckmann conversion reaction. CONSTITUTION: The MFI and MEL type zeolite catalysts having a molar ratio of Si/Al being more than 500 is treated at 20-150 °C with 0.01-0.5 N by concentration of an acid selected from the group consisting of hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, and acetic acid. The ε-caprolactam is prepared from cyclohexanone oxime by Beckman conversion reaction at 250-400 °C in the presence of the acid treated zeolite catalyst.
Abstract:
The present invention relates to a method for preparing silicate luminous materials and silicate luminous materials and, specifically, to the method for preparing silicate luminous materials comprising: a hydrothermal treatment step of obtaining silica layered materials substituted with rare earth metals by treating a reacting solution, which is an aqueous solution comprising rare earth metal ions, NaOH and silica, with hydrothermal treatment; and a plasticizing step of forming crystalline silica materials by plasticizing the silica layered materials substituted with rare earth metals. The method for preparing silicate luminous materials simply and economically manufactures silicate luminous materials having excellent luminescence intensity by strong covalent bond property and can be used as luminous materials for an LED since the silicate luminous materials are stable at the high temperature and simply and economically manufactures silicate luminous materials capable of selectively using luminescence such as red, green, blue etc since the various kinds of rare earth metals can be substituted for silicon.