Abstract:
PURPOSE: A homogenous catalyst used in a reaction of manufacturing a biodiesel from a bio oil with a high oxidation number is provided to reduce costs of the biodiesel by extending a range of a raw material of the biodiesel from a high quality bio oil to a low quality bio oil as the homogenous catalyst is capable of converting a low quality bio oil with a high oxidation number to a high quality biodiesel. CONSTITUTION: A homogeneous catalyst used in a reaction of manufacturing a biodiesel from a bio oil with a high oxidation number includes a divalent metal ion(M^2+). The divalent metal ion is one or a mixture of at least two selected from the group consisting of Mg^2+, Ca^2+, Cu^2+, Fe^2+, Ni^2+, Co^2+, Mn^2+, and Zn^2+. A method for manufacturing the biodiesel comprises reacting the bio oil having an oxidation number of 5 or greater with methanol in the presence of the homogenous catalyst including the divalent metal ion. [Reference numerals] (AA) Conversion rate %; (BB) Selectivity %; (CC) Non-catalyst; (DD) Catalyst
Abstract:
PURPOSE: A waste catalyst recycling method for phenol alkylation is provided to dissolve waste catalyst using nitric acid without an alkaline solution. CONSTITUTION: A waste catalyst recycling method for phenol alkylation includes a process in which a waste catalyst is dissolved. The waste catalyst is a multiple metallic components-based catalyst containing indium such as an indium-iron-vanadium-based catalyst represented by one of chemical formulas 1 to 3. The dissolving process with respect to the waste catalyst is implemented using nitric acid instead of an alkaline solution.
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, 페놀과 메탄올을 고정상 촉매상에서 기상으로 반응시켜 2,6-디메틸페놀을 제조하는데 유용한, 페놀의 메틸화 촉매 및 상기 촉매 하에서 2,6-디메틸페놀을 제조하는 방법에 관한 것이다. 더욱 자세하게는, 페놀로부터 2,6-디메틸페놀을 제조하는데 있어서 메타-크레졸과 파라-크레졸 및 2,4-디메틸페놀 등 페놀의 메타 또는 파라 위치에 알킬기가 치환된 알킬페놀 화합물의 부생을 최대한 억제하면서도 활성 및 장기 반응 안정성이 뛰어난 고선택적 오르토(ortho)-위치선택성 알킬화 촉매 및 상기 촉매하에서 2,6-디메틸페놀을 제조하는 방법에 관한 것이다.
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:
본 발명은, 페놀과 메탄올을 고정상 촉매상에서 기상으로 반응시켜 o-크레졸과 2,6-자이레놀을 제조하는데 유용한, 페놀의 알킬화 촉매 및 상기 촉매 하에서 o-크레졸과 2,6-자이레놀을 제조하는 방법에 관한 것이다. 더욱 자세하게는, 페놀로부터 o-크레졸과 2,6-자이레놀을 고선택적으로 장기간 제조할 수 있는 장수명의 오르토(ortho)-위치 선택성 알킬화 촉매 및 상기 촉매 하에서 상기 o-크레졸과 2,6-자이레놀을 제조하는 방법에 관한 것이다. 페놀, 알킬화 촉매, 크레졸, 자이레놀
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.