Abstract:
본 발명은 실리카에 제1금속산화물 및 제2금속산화물이 담지된 촉매에 있어서, 상기 제1금속산화물은 탄탈륨산화물이고, 상기 제2금속산화물은 세륨산화물, 니켈산화물, 지르코늄산화물 및 망간산화물로 이루어지는 군으로부터 선택되는 1종 이상인 것을 특징으로 하는 1,3-부타디엔 제조용 촉매 및 이를 이용한 1,3-부타디엔의 제조방법에 관한 것으로, 구체적으로 본 발명의 촉매는 절한 크기와 강도를 갖는 성형실리카 담체를 선택함으로써 실제 고정층 반응기에 적용할 수 있고, 제1금속산화물로 탄탈륨산화물을, 제2금속산화물로 세륨산화물, 니켈산화물, 지르코늄산화물, 망간산화물을 함께 함침시킴으로써, 반응시간이 경과함에 따라 1,3-부타디엔의 선택도의 저하를 최소화함으로써 활성저하 현상이 억제되어 촉매의 수명이 기존 실리카계 촉매에 � ��하여 월등히 향상되는 효과가 있으므로, 1,3-부타디엔의 제조에 유용하게 사용될 수 있다.
Abstract:
The present invention relates to a zeolite catalyst which is a nano-sized crystal in which zinc and lanthanum are dipped and a method for producing same. More specifically, the zeolite catalyst includes a first particle having a size of 10 to 100 nm and a second particle having a size of 1 to 10 μm. Each of the second particles includes the first particles. The zeolite catalyst comprises: zeolite having a silica and alumina mole ratio (SiO2/Al2O3) of 50 to 80; and zinc and lanthanum that are dipped therein. The zeolite catalyst includes zinc and lantan that are co-precipitated therein as active ingredients of the catalyst in order to increase the selectivity of an aromatic compound, especially BTX. The selectivity of an aromatic compound and BTX can be remarkably increased when the aromatic compound is produced from ethanol using a fixed layer catalyst reactor by means of the co-precipitation and appropriate acid site of nano-sized crystal particles, zinc, and lanthanum.
Abstract translation:本发明涉及一种沸石催化剂,其是浸渍有锌和镧的纳米尺寸的晶体及其制造方法。 更具体地说,沸石催化剂包括尺寸为10-100nm的第一颗粒和尺寸为1至10μm的第二颗粒。 每个第二颗粒包括第一颗粒。 沸石催化剂包括:二氧化硅和氧化铝摩尔比(SiO 2 / Al 2 O 3)为50〜80的沸石; 以及浸入其中的锌和镧。 沸石催化剂包括作为催化剂的活性成分共沉淀的锌和蓝丹,以提高芳族化合物,特别是BTX的选择性。 当使用固定层催化剂反应器通过共沉淀和纳米尺寸的结晶颗粒,锌和镧的适当酸性位点从乙醇制备芳族化合物时,芳族化合物和BTX的选择性可以显着增加。
Abstract:
The present invention relates to a regularly ordered mesoporous carbon-based catalyst for producing oxygenated carbon compounds from synthetic gas and a method for producing oxygenated carbon compounds using the same. Specifically, the catalyst of the present invention uses ordered mesoporous carbon (OMC) having a high surface area and even and regular mesoporous as a carrier while the structure of the carrier is specified as a 2-D tubular type, a 3-D rod type or a 3-D tubular type, in order to optimize the side and spread extent of the particles of active metals for increasing the selectivity and production speed of oxygenated carbon compounds. The regularly ordered mesoporous carbon carrier can be further produced from a carbohydrate aqueous solution such as sucrose or xylose to be eco-friendly and economical, so that the carrier can be useful in the production of oxygenated carbon compounds.
Abstract:
The present invention relates to an oxidative desulfurization process for hydrocarbon. According to one embodiment of the present invention, the oxidative desulfurization process for hydrocarbon produces desulfurized final products by converting sulfur compounds within hydrocarbon into sulfur oxide by reacting an oxidant with hydrocarbon under an oxidation catalyst and removing the sulfur oxide through extraction or adsorption. The oxidative desulfurization method for hydrocarbon removes sulfur oxide using an extractant or an adsorbent. [Reference numerals] (AA) Hydrocarbon; (BB) Oxidizer; (CC) Oxidation step 1; (DD) Oxidation step 2; (EE) Extraction; (FF) Desulfurized product
Abstract:
본 발명은 유기용매에 전이 금속 전구체와 킬레이트 제제를 투입하여 반응시키는 1 단계; 담지체를 수용액에 투입하고 혼합하는 2 단계; 상기 1 단계 및 2 단계에서 제조된 용액을 혼합하여 교반하는 3 단계; 및 상기 3단계에서 제조된 용액을 건조 및 소성하는 4단계; 를 포함하는 선택산화탈황용 촉매의 제조 방법에 관한 것이다. 상기 제조 방법에 의해 제조된 촉매는 활성금속성분의 담지 시 낮은 반응 활성을 보이는 크기가 큰 활성금속의 형성과 입단화 (aggregation)를 방지하여 높은 촉매 활성을 유지하는 동시에 촉매의 수명을 증가 시키게 된다.
Abstract:
PURPOSE: A disulfonate type promoter for formation of natural gas hydrate is provided to easily control the generation rate by controlling concentration to water, and to have large storage ability of gas hydrate. CONSTITUTION: A disulfonate type promoter for formation of natural gas hydrate is an anionic multi-chain type disulfonate type surfactant in chemical formula 1. In chemical formula 1, R^1 and R^2 is same or different each other, selected from saturated of unsaturated C1-30 linear or branched alkyl group. The alkyl is able to be substituted to fluorine atom or aromatic ring. M is selected from alkali metal, and n is the integer of 0-6. The manufacturing method of the natural gas hydrate comprises a step of hydrating natural gas in solution which contains 5-150 ppm of the promoter.
Abstract:
본 발명은 신가스(syngas)를 이용하여 액체탄화수소를 제조하기 위해 철계 촉매(조성비율 Fe/Cu/Al/K = 100/6/16/4 중량부) 및 C 5 -C 7 의 노말탄화수소 초임계 유체를 사용한 피셔-트롭쉬(Fischer-Tropsch, FT) 합성 방법에 관한 것이다. 본 발명에 따른 피셔-트롭쉬 합성 방법은 초임계 유체를 사용하여 기존의 탄화수소 제조방법에서 사용하는 기상반응에 비해 유사한 일산화탄소의 전환율을 나타내나, 이산화탄소 및 메탄의 발생량을 대폭 감소시켜 C 5 이상의 탄화수소의 선택도 및 올레핀의 선택도를 증대시킬 수 있다. 피셔-트롭쉬 합성반응, 액체탄화수소, C5-C7의 노말탄화수소 초임계 유체, 철계 촉매
Abstract:
PURPOSE: A water dispersible acrylic polymer emulsion composition is provided to improve a crosslinking property compared with an existing method and to prepare coating fertilizer with excellent dissolution rate control that release the fertilizer slowly in an aqueous phase. CONSTITUTION: A water dispersible acrylic polymer emulsion composition for coating granular urea fertilizer is obtained by adding an acrylic functional crosslinkable monomer, a silane cross-linking agent or their mixture to a water dispersible acrylic polymer emulsion composition containing an initiator and emulsifier during emulsion polymerization in an acrylic monomer aqueous solution.
Abstract:
A crystalline molecular sieve with a mesoporous structure which has a large pore size, a thick thickness of a pore wall and improved hydrothermal stability, a preparation method of the crystalline molecular sieve, a catalyst for dearomatization of residue oil after naphtha cracking using the crystalline molecular sieve, and a method for preparing the catalyst using the crystalline molecular sieve are provided. A method for preparing a crystalline molecular sieve with a mesoporous structure comprises the steps of: (a) dissolving 1 to 30 weight parts of silica or aluminum salt, or a mixture of the silica or aluminum salt and a metal alkoxide selected from titanium alkoxide, aluminum alkoxide and silicon alkoxide into 100 weight parts of a hydrogen fluoride solution with a concentration of 10 to 60%, wherein the mixture has an Si/metal molar ratio of 5 to 100; (b) dissolving 2 to 30 weight parts of a mixture of a nonionic surfactant and trialkylbenzene into 100 weight parts of distilled water; (c) uniformly mixing the solution prepared in the step(a) with the solution prepared in the step(b) at a weight ratio of 1:0.5 to 2.0, adding 20 to 30 weight parts of ammonia water with a concentration of 20 to 30 wt.% relative to 100 weight parts of the hydrogen fluoride solution to the mixed solution, aging the resulting solution at 25 to 90 deg.C for 16 to 24 hours, and filtering and drying the aged solution to prepare powder; and (d) mixing the powder with 200 to 400 weight parts of an acidic ethanol solution in which an acid selected from hydrochloric acid, sulfuric acid and nitric acid is dissolved relative to 100 weight parts of the hydrogen fluoride solution to clean the powder prepared in the step(c), drying the cleaned powder, and calcining the dried powder at 300 to 600 deg.C.
Abstract:
본 발명은 층상실리케이트를 주형으로 이용하여 제조된 다공성 흑연과 이의 제조방법에 관한 것으로서, 더욱 상세하게는 층상실리케이트의 층간에 전이금속 화합물과 유기 탄소화물을 삽입한 후, 열 분해하여 층상 실리케이트의 층 사이에 다공성 결정형 흑연층이 교대로 적층된 구조를 이루고 있는 나노복합체를 얻은 다음, 실리케이트 골격과 흑연층 내부에 분산된 전이금속 이온을 용출 제거하는 방법으로, 균일한 크기의 옆상(plate)입자로 구성되고, 개개의 입자는 결정형 흑연층이 겹겹이 규칙적으로 배열된 적층 구조를 이루고, 각 층간 간격은 충분히 확보되어 있으며, 흑연층 사이의 공간이 다공성을 나타내는 구조적 특징을 가진 다공성 흑연과 이의 제조방법에 관한 것이다. 층상실리케이트, 전이금속 화합물, 유기 탄소화물, 다공성 흑연