Boron-pore-forming chromium-based catalyst with high specific surface area and preparation method of high-proportion Z-fluorine-containing olefin/E-fluorine-containing olefin

The invention discloses a boron-containing chromium-based catalyst for preparing fluorine-containing olefin, and the catalyst comprises a chromium salt and a boron-containing compound, or the catalyst comprises a chromium salt, a second metal salt except chromium and a boron-containing compound. The invention further discloses a preparation method of the high-proportion Z-fluorine-containing olefin/E-fluorine-containing olefin, under the action of the boron-containing chromium-based catalyst, a chlorine-containing compound and anhydrous hydrogen fluoride are subjected to a fluorine-chlorine exchange reaction, and the high-proportion Z-fluorine-containing olefin/E-fluorine-containing olefin is prepared. 本申请公开了一种用于制备含氟烯烃的含硼铬基催化剂，其中，所述催化剂包括铬盐和含硼化合物，或者所述催化剂包括铬盐、除铬外的第二金属盐和含硼化合物。本申请还公开了一种高比例Z-含氟烯烃/E-含氟烯烃的制备方法，在含硼铬基催化剂作用下，含氯化合物与无水氟化氢发生氟-氯交换反应，制备得到高比例Z-含氟烯烃/E-含氟烯烃。