乙苯催化脱氢制苯乙烯的工业催化剂,四十年代中期为ZnO和MgO体系,因其活性、选择性欠佳而为后来开发的Fe-Cr-K体系所取代。七十年代特别是八十年代以来,一些高强度、长寿命、高选择性的新型催化剂相继问世,其中尤以不含Cr的高效催化剂国外已于七十年代工业化,并获得了巨大的经济效益。 催化剂开发研究 对乙苯催化脱氢制苯乙烯催化剂的开发研究,就当前来看,美国开发的Fe_2O_3系仍占有重要地位。其反应温度均在600℃ The industrial catalysts for the catalytic dehydrogenation of ethylbenzene to styrene were the ZnO and MgO systems of the mid-1940s, which were replaced by the Fe-Cr-K systems developed later due to their poor activity and selectivity. Since the seventies, especially since the eighties, some new catalysts with high strength, long life and high selectivity have come out one after another. Among them, especially high-efficiency catalysts without Cr have been industrialized in the seventies and gained huge economic benefits . Development and Research of Catalysts Development and research on styrene catalyst for catalytic dehydrogenation of ethylbenzene. For the moment, the Fe_2O_3 system developed in the United States still plays an important role. The reaction temperature is 600 ℃