摘要:
Disclosed is an HFO-1234ze and HFC-245fa co-production preparation method. The HFO-1234ze and HFC-245fa are prepared through a two-stage gas phase fluorination reaction by using 1,1,1,3,3-pentachloropropane (HCC-240fa) as a raw material. With the processing method of the present invention, HFO-1234ze and HFC-245fa can be prepared at the same time, and the alkene is unlikely to polymerize or carbonize during the reaction, thus being suitable for industrialized promotion.
摘要:
Disclosed is an HFO-1234ze preparation process. The present invention is realized by loading two fluorination catalysts into the same reactor, and controlling the temperature in each section. The preparation process of the present invention is of moderate reaction condition, stable catalyst activity, and simple process.
摘要:
Provided are a fluorination catalyst for preparing 2,3,3,3-tetrafluoropropene and a method using the catalyst for preparing 2,3,3,3-tetrafluoropropene. The catalyst has the following structural formula: Crx(Y,Z) 0.005-o.5 O 0.1-1.0 F 1.0-3.0 , where Y is one or a combination of two or more among Al, Zn, and Mg, and where Z is a rare earth element having an oxygen-storing/releasing function. The catalyst has in preparing 2,3,3,3-tetrafluoropropene the advantages of increased raw material conversion rate, great product selectivity, and extended catalyst service life.
摘要翻译:提供用于制备2,3,3,3-四氟丙烯的氟化催化剂和使用该催化剂制备2,3,3,3-四氟丙烯的方法。 该催化剂具有以下结构式:其中Y是Al,Zn和Mg中的一种或两种以上的组合,Cr x(Y,Z)为0.005-0.5O 0.1 -1.0 F 1.0-3.0,并且其中 Z是具有储氧/释放功能的稀土元素。 该催化剂具有制备2,3,3,3-四氟丙烯原料转化率高,产物选择性好,催化剂使用寿命长的优点。