METHOD FOR PRODUCING 1,3-CYCLOHEXANEDICARBOXYLIC ACID

• Main Authors: KIM, Sung Min, SEO, Young Jong, PARK, Sung Joon, CHOI, Young Heon, CHOI, Seong Hwan, YUN, Chan Yeong, CHA, Mi Sun
• Format: Patent
• Language: English; French; Korean
• Published: 05.04.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The present invention relates to a method for producing 1,3-cyclohexanedicarboxylic acid, wherein the efficiency and economic feasibility of a reaction can be improved by using a catalyst which exhibits excellent activity and has improved durability in high-temperature and strongly acidic reaction conditions, most of reactants participate in the reaction, thereby allowing an excellent conversion rate to be achieved, and a highly pure product can be obtained in a shorter amount of time while minimizing byproducts. The method for producing 1,3-cyclohexanedicarboxylic acid comprises a step of reducing isophthalic acid in the presence of a metal catalyst, which is fixed to a silica carrier and includes a palladium (Pd) compound and a copper (Cu) compound at a weight ratio of 1:01 to 0.5. La présente invention concerne un procédé de production d'acide 1,3-cyclohexanedicarboxylique, dans lequel l'efficacité et la faisabilité économique d'une réaction peuvent être améliorées en utilisant un catalyseur qui présente une excellente activité et a une durabilité améliorée dans des conditions de réaction à haute température et fortement acide, la plupart des réactifs participent à la réaction, ce qui permet d'obtenir un excellent taux de conversion, et un produit très pur peut être obtenu en un laps de temps plus court tout en réduisant au minimum les sous-produits. Le procédé de production d'acide 1,3-cyclohexanedicarboxylique comprend une étape de réduction de l'acide isophtalique en présence d'un catalyseur métallique, qui est fixé à un support de silice et comprend un composé palladium (Pd) et un composé de cuivre (Cu) à un rapport pondéral de 1:01 à 0,5. 본 발명은, 우수한 활성을 나타내며, 고온 및 강산의 반응 조건에서 내구성이 향상된 촉매를 사용하여 반응의 효율 및 경제성을 높일 수 있고, 반응물이 대부분 반응에 참여하여 우수한 전환율을 구현할 수 있으며, 보다 짧은 시간 안에 부산물을 최소화하면서도 고순도의 생성물을 얻을 수 있는 1, 3-사이클로헥산디카르복시산 제조 방법에 관한 것으로, 상기 1, 3-사이클로헥산디카르복시산의 제조 방법은 실리카 담체에 고정되고, 팔라듐 (Pd) 화합물 및 구리 (Cu) 화합물이 1 :0.1 내지 0.5의 중량비로 포함된 금속 촉매의 존재 하에, 이소프탈산을 환원시키는 단계를 포함할 수 있다.