Abstract:
PURPOSE: A basic ternary system metallic oxide catalyst for etherification of glycerine, a manufacturing method thereof, and a manufacturing method of polyglycerine using the same are provided to prevent a color change of the product and bad smell, to suppress production of ring type polyglycerine even under a warm reacting condition, and to obtain linear type polyglycerine in a high content. CONSTITUTION: A basic ternary system metallic oxide catalyst for etherification of glycerine is indicated as (CaO)a·(CaLaAl3O7)b·(La2O3)c. In the chemical formula above, a, b, and c indicates weight ratio of CaO, CaLaAl3O7, and La2O3 to 100 wt% of the total catalyst. A manufacturing method of the metallic oxide catalyst comprises the steps of: producing precipitate of mixed metal hydroxide type by adding aqueous solution containing calcium salt, aluminum salt, and landthanum salt, and alkaline precipitation agent aqueous solution to sodium chloride aqueous solution; stirring at 40-80 deg C; obtaining hydrotalcite type metal hydroxide powder by separating, washing, and drying the precipitate; and plasticizing the metal hydroxide powder at 400-800 deg C among the air. [Reference numerals] (AA) Content (weight%); (BB) POLYGLYCERINE polymerizing degree
Abstract translation:目的:提供用于甘油醚化的碱性三元体系金属氧化物催化剂及其制造方法和使用其的聚甘油的制造方法,以防止产品的颜色变化和不良气味,以抑制环型聚甘油的生产甚至 在温热反应条件下,得到高含量的线型聚甘油。 构成:用于甘油醚化的碱性三元体系金属氧化物催化剂表示为(CaO)a·(CaLaAl 3 O 7)b·(La 2 O 3)c。 在上述化学式中,a,b和c表示CaO,CaAl 3 O 7和La 2 O 3与总催化剂的100重量%的重量比。 金属氧化物催化剂的制造方法包括以下步骤:通过向氯化钠水溶液中加入含有钙盐,铝盐和陆地盐的水溶液和碱性沉淀剂水溶液来生产混合金属氢氧化物型沉淀物; 在40-80℃下搅拌; 通过分离,洗涤和干燥沉淀得到水滑石型金属氢氧化物粉末; 并在400-800℃的空气中使金属氢氧化物粉末增塑。 (附图标记)(AA)含量(重量%); (BB)聚合度聚合度
Abstract:
PURPOSE: A producing method of bio-diesel from high acid-value bio-oil using an acid-base composite catalyst is provided to improve the selectivity and the reaction stability of the bio-diesel. CONSTITUTION: A producing method of bio-diesel from high acid-value bio-oil using an acid-base composite catalyst comprises a step of reacting the high acid-value bio-oil and methanol using a composite catalyst to obtain the bio-diesel. The composite catalyst contains 5-50wt% of solid acid catalyst, 5-50wt% of solid base catalyst, and 10-50wt% of alumina sol, silica sol, or their compound. The solid acid catalyst is selected from acidic zeolite, acidic clay, heteropoly acid, or acidic composite metal oxide. The solid base catalyst is selected from alkaline earth metal oxide, rare earth metal oxide, basic zeolite, or hydrotalcite.
Abstract:
본 발명은 젖산 에스테르의 탈수 반응용 인산칼슘-실리카 촉매 및 그의 제조방법과, 상기 촉매를 이용하여 젖산 에스테르를 탈수하여 아크릴계 화합물인 아크릴산과 아크릴산 에스테르를 제조하는 방법에 관한 것으로, 인산칼슘-실리카 촉매의 존재 하에 탄소수가 1~4인 알킬기를 가진 젖산 에스테르를 탈수 반응시켜 아크릴산과 아크릴산 에스테르를 고수율로 제조할 수 있다. 본 발명의 인산칼슘-실리카 촉매는 인산칼슘 50 내지 98 중량% 및 실리카 2 내지 50 중량%로 이루어지고, 상기 인산칼슘은 Ca 3 (PO 4 ) 2, Ca 2 P 2 O 7 , Ca 5 (P 3 O 10 ) 2 및 Ca 3 (PO 3 ) 6 로 이루어진 군으로부터 선택되는 하나 이상이다. 인산칼슘 촉매, 탈수반응, 젖산 에스테르, 아크릴산, 아크릴산 에스테르
Abstract:
PURPOSE: Calcium phosphate catalysts for the dehydration reaction of lactates, a method for preparing the same, and a method for preparing acrylic compounds based on the lactates are provided to improve the selectivity and the reaction stability of dehydration reaction using phosphoric acid precursors and calcium precursors. CONSTITUTION: Calcium phosphate catalysts for the dehydration reaction of lactates contains one or more calcium phosphate selected from a group including Ca_3(PO_4)_2, Ca_2P_2O_7, Ca_5(P_3O_10)_2, and Ca_3(PO_3)_6. A method for preparing the calcium phosphate catalysts contains the following: Calcium phosphate slurry is prepared by mixing a phosphate aqueous solution and a calcium salt aqueous solution. The calcium phosphate slurry is filtered and cleaned to form powder. The power is sintered in air with 300 to 700 degrees Celsius of temperature.
Abstract:
PURPOSE: Calcium phosphate-silica catalysts for the dehydration reaction of lactates, a method for preparing the same, and a method for preparing acrylic compounds based on the lactates are provided to improve the yield of acrylic acids and acrylic esters by continuously dehydrating the lactates. CONSTITUTION: Calcium phosphate-silica catalysts contains 50 to 98 weight% of Calcium phosphate and 2 to 50 weigh% of silica. The calcium phosphate is selected from a group containing Ca_3(PO_4)_2, Ca_2P_2O_7, Ca_5(P_3O_10)_2, and Ca_3(PO_3)_6. The method for preparing the calcium phosphate-silica catalysts contains the following: Calcium phosphate is prepared by mixing a phosphate aqueous solution and a calcium salt aqueous solution. Silica slurry is prepared by mixing silicon salt aqueous solution and an acid aqueous solution. The silicon slurry is mixed with the calcium phosphate. The mixed slurry is filtered and cleaned to form powder. The power is sintered.
Abstract:
본 발명은 불포화 지방산 알킬 에스테르를 연속적으로 수소화하는 방법에 관한 것으로, 하기 화학식 1로 표시되는 4성분계 금속산화물 촉매의 존재 하에 탄소수가 8~24인 불포화 지방산 알킬 에스테르를 수소화 반응시켜 고정상 반응기에서 연속적으로 제조하는 본 발명에 따른 방법은 요오드값이 0.1이하인 포화 지방산 알킬 에스테르를 고수율로 제조할 수 있다 : [화학식 1] (NiO) a ·(MgO) b ·(ZnO) c ·(Al 2 O 3 ) d 상기 화학식 1에서, a, b, c 및 d는 촉매 총 중량에 대한 함량을 의미하며, a는 40 내지 80중량%이고, b는 1 내지 20중량%이고, c는 0.5 내지 10중량%이고, d는 10 내지 40중량%이다. 니켈 촉매, 펠렛형 니켈 촉매, 수소화, 불포화 지방산 알킬 에스테르
Abstract:
PURPOSE: A metal oxide catalyst for etherification reaction is provided to obtain high content of linear polyglycerol using basic binary based metal oxide catalyst for the etherification reaction and to be used for manufacturing polyglyerol suitable for cosmetics and food additives. CONSTITUTION: A binary based metal oxide catalyst for etherification reaction of glycerol is marked as a chemical formula 1. [Chemical formula 1] (CaO)_a · (Ca_12Al_14O_33)_(100-a). In the chemical formula 1, a is weight ratio of CaO to catalyst 100.0, a is in a range of 30-70. A method for manufacturing the metal oxide catalyst comprises the following steps: creating a precipitate of a mixed metal hydroxide by simultaneously adding solution including calcium salt and aluminum salt and alkaline precipitation agent to solution of sodium chloride; mixing the precipitate at 40-80°C; obtaining hydrocalumite metal hydroxide powder through separation and washing of the precipitate; and plasticizing the metal hydroxide powder at 400-800°C.
Abstract:
PURPOSE: A continuous hydrogenation method of unsaturated fatty alkyl ester is provided to ensure mild reaction conditions, excellent reaction stability, and long-period reaction using a nickel-based catalyst. CONSTITUTION: A continuous hydrogenation method of unsaturated fatty alkyl ester comprises a step of preparing saturated fatty acid alkylester by hydrogenating C8-24 unsaturated fatty acid alkylester in the presence of a quaternary metallic oxide catalyst represented by chemical formula 1: (NiO)a·(MgO)b·(ZnO)c·(Al2O3)d. In chemical formula 1, a, b, c and d represent the content based on the total weight of a catalyst, wherein a is 40-80 weight%, b is 1-15 weight%, c is 0.5-5 weight%, and d is 20-50 weight%.
Abstract:
Provided are a method for preparing a fatty acid alkyl ester from animal and vegetable oils easily without post-processing such as washing or distillation, and a transesterification composite catalyst used in the preparation. The method comprises the step of reacting an animal and/or vegetable oil with a low molecular weight alcohol of C1-C4 in the presence of a catalyst represented by xMgOÀyZnOÀZnAl2O4 in a fixed bed reactor to prepare a fatty acid alkyl ester continuously, wherein x and y represent a molar ratio to ZnAl2O4; x is 1-3; y is 0-2; and ZnAl2O4 is a zinc aluminate having a spinel structure. Preferably the animal and/or vegetable oil comprises at least one selected from the group consisting of a soybean oil, a rapeseed oil, a sunflower seed oil, a corn oil, a palm oil, tallow, and their mixture.
Abstract translation:本发明提供一种从动植物油中容易地制备脂肪酸烷基酯而无需洗涤或蒸馏等后处理以及制备中使用的酯交换复合催化剂的方法。 所述方法包括在固定床反应器中在由xMgOÀ yZnOÀ ZnAl 2 O 4表示的催化剂存在下使动物油和/或植物油与C1-C4的低分子量醇反应以连续制备脂肪酸烷基酯的步骤 其中x和y代表与ZnAl 2 O 4的摩尔比; x是1-3; y是0-2; ZnAl2O4是具有尖晶石结构的铝酸锌。 优选地,动物油和/或植物油包含选自大豆油,菜籽油,葵花籽油,玉米油,棕榈油,牛油及其混合物中的至少一种。
Abstract:
본 발명은 실리카겔-흑연 복합체 및 그의 제조방법에 관한 것으로서, 더욱 상세하게는 실리카겔과 흑연이 커플링제에 의하여 화학적으로 결합된 실리카겔-흑연 복합체를 제조하여, 물 흡착량이 큰 실리카겔의 열악한 열전도도 때문에 열효율이 낮은 문제점을 해결함으로써, 상기 실리카겔-흑연 복합체를 흡착식 냉각시스템용의 흡착제로 사용할 경우 실리카겔과 흑연이 화학적으로 결합된 구조적인 특징으로 인하여 강도가 향상되어 흡착제의 내구성이 향상되고, 기존의 기계식 냉각시스템과는 달리 컴프레서와 같은 움직이는 기계부품을 사용하지 않으므로 진동과 소음이 나지 않으며, 물처럼 독성이 없는 물질을 냉매로 사용할 수 있어 환경 친화적이고, 구동 에너지원으로서 전기뿐만 아니라 태양열과 폐열 등 저급 에너지를 활용할 수 있는 장점을 극대화시킨 효과를 얻을 수 있는 실리카겔-흑연 복합체와 그의 제조방법 및 상기한 실리카겔-흑연 복합체를 흡착식 냉각시스템용 흡착제로 사용하는 용도에 관한 것이다. 흡착식 냉각시스템, 실리카겔, 흑연, 복합체, 열전도도, 커플링제