Abstract:
본 발명의 방향족 카보네이트 화합물 합성용 촉매 조성물은 하기 화학식 1 또는 하기 화학식 2로 표시되는 최소한 1종의 사마륨계 주촉매; 및 하기 화학식 3, 화학식 4, 또는 하기 화학식 5로 표시되는 최소한 1종의 조촉매;를 포함하며, 상기 촉매 조성물을 이용하여 방향족 카보네이트 화합물을 제조하는 방법은 지방족 카보네이트 화합물과 방향족 하이드록시 화합물을 하기 화학식 1 또는 하기 화학식 2로 표시되는 최소한 1종의 사마륨계 주촉매 및 하기 화학식 3, 화학식 4, 또는 화학식 5로 표시되는 최소한 1종의 조촉매의 존재하에서 반응시키는 단계를 포함하는 것으로, 주촉매 및 조촉매의 존재하에 탄산 에스테르 반응을 시켜 안정적으로 높은 선택도를 갖는 방향족 카보네이트 화합물 및 폴리카보네이트 수지를 제조할 수 있다. [화학식 1]
(상기에서 X는 탄소수 1-10의 알콕시, 알킬 페녹시 또는 페녹시임) [화학식 2]
(상기에서 R1 및 R2는 각각 독립적으로 서로 같거나 다른 수소, 탄소수 1~6의 알킬기임 ) [화학식 3]
Abstract:
PURPOSE: A manufacturing method of aromatic carbonate from dialkyl carbonate is provided to increase esterification speed of the dialkyl carbonate and to reduce generation of by-products of ether. CONSTITUTION: A manufacturing method of aromatic carbonate from dialkyl carbonate comprises the step of reacting aromatic hydroxy compound with dialkyl carbonate under the presence of a catalyst marked as chemical formula 1. In the chemical formula 1, R indicates C1-10 alkyl group or C6-12 aryl group. l indicates an integer of 0-4, m indicates 0 or 1, n indicates an integer of 0-4. Except all l, m and n are 0, when m is 0, l+n=4, and when m is 1, l+n=2.
Abstract translation:目的:提供碳酸二烷基酯的芳族碳酸酯的制造方法,以提高碳酸二烷基酯的酯化速度,并减少乙醚副产物的产生。 构成:碳酸二烷基酯的芳香族碳酸酯的制造方法,是在化学式1所示的催化剂存在下,使芳香族羟基化合物与碳酸二烷酯反应的步骤。在化学式1中,R表示C1-10烷基或C6- 12芳基。 l表示0-4的整数,m表示0或1,n表示0〜4的整数。 除了所有l,m和n为0,当m为0时,l + n = 4,当m为1时,l + n = 2。
Abstract:
PURPOSE: A method for preparing an aromatic carbonate compound is provided to obtain the aromatic carbonate compound with high selectivity by esterification under the presence of a main catalyst and a co-catalyst. CONSTITUTION: A catalyst composition for synthesizing an aromatic carbonate compound contains one or more kinds of samarium-based main catalysts of chemical formula 1 or 2, and one or more co-catalysts of chemical formula 3, 4, or 5. The molar ratio of the main catalyst and the co-catalyst is 1:1-3:1. A method for preparing the aromatic carbonate compound comprises a step of reacting an aliphatic carbonate compound and an aromatic hydroxyl compound with one or more samarium-based main catalysts of chemical formula 1 or 2 with one or more co-catalysts of chemical formula 3, 4, or 5.
Abstract:
A supported catalyst of the present invention comprises: a metallic oxide carrier including at least one among cerium oxide (CeO_2) and zinc oxide (ZnO); and a catalyst supported by the metallic oxide carrier. The catalyst comprises at least one among metallic oxides of nickel oxide (NiO) and zirconium oxide (ZrO_2). The catalyst is improved in terms of acid-base properties, thereby enabling highly-efficient preparation of dimethyl carbonate from methanol and carbon dioxide.
Abstract:
PURPOSE: A catalyst, a manufacturing method of the same, and a manufacturing method of aromatic carbonate based on dialkyl carbonate using the same are provided to improve the yield of aromatic carbonate at low temperatures by using dialkyl carbonate as a starting material instead of carbon monoxide. CONSTITUTION: A catalyst for synthesizing aromatic carbonate includes a unit represented by chemical formula 1. In chemical formula 1, R1 is C1-C5 alkyl group; R2 is a substituted or non-substituted phenyl group; and n is an integer from 1 to 10. The catalyst is manufactured by generating a reaction between a compound represented by chemical formula 2 and R2OH. In chemical formula 2, x is from 0 to 5.