In the organic chemical industry, fluorene is a very important raw material for organic synthesis. But for a long time, due to the limitation of many factors, my country's fluorene products have always been mainly industrial fluorene containing 95% fluorene, while refined fluorene products (containing fluorene>99.0%) basically do not. Compared with Japan, Germany, the former Soviet Union and other countries with more advanced tar processing, refined fluorene has become a blank product in the tar processing industry. Therefore, when synthesizing products such as fluorenone, fluorene methanol, fluorene aldehyde resin and transparent nylon, the raw materials used are Only fluorene can replace refined fluorene. Due to its low purity, this will inevitably lead to a series of follow-up problems, such as: low product quality, high consumption, many side reactions and difficulty in product separation.
