A method of reducing the formation of an impurity in a terephthalic acid (TPA) production process includes: combining in a reactor, a catalyst, a mixture comprising the impurity and the TPA, and a compound comprising an active carbon atom; reacting the impurity with the compound in the presence of the catalyst by a condensation-dehydration reaction process comprising a nucleophilic addition of the active carbon atom of the compound to a carbonyl group of the impurity to form an intermediate followed by a dehydration reaction of the intermediate to form a product mixture comprising a water, the TPA, and an alkene; and recovering the product mixture from the reactor.
一种减少
对苯二甲酸(
TPA)生产过程中杂质形成的方法包括在反应器中加入催化剂、由杂质和
TPA 组成的混合物以及由活性碳原子组成的化合物;在催化剂存在下,通过缩合-脱
水反应过程使杂质与化合物反应,该反应过程包括化合物的活性碳原子与杂质的羰基发生亲核加成反应,形成中间产物,然后对中间产物进行脱
水反应,形成由
水、
TPA 和烯烃组成的产品混合物;以及从反应器中回收产品混合物。