A new ethylene to propylene catalytic process based on cascade reactions, with two catalysts and two reactors, has been explored in this study. In the first reactor loaded with Ni-AlKIT-6 catalyst, at 60–120 °C and 3 MPa, part of ethylene has been selectively transformed into 2-butene. In the second reactor, loaded with WO_x/KIT-6 catalyst, 2-butene reacted with the unconverted ethylene at 450 °C and 0.1 MPa. Unprecedented results in terms of catalytic activity, selectivity towards the formation of propylene and stability against deactivation were achieved under these conditions. More precisely, an ethylene conversion of ~85% and a selectivity to propylene of 55% and butenes of 30% remained unchanged during 24 h on reaction stream.

在这项研究中，探索了一种基于级联反应的新型乙烯到丙烯催化方法，该方法具有两个催化剂和两个反应器。在第一个装有Ni-AlKIT-6催化剂的反应器中，在60-120°C和3 MPa下，部分乙烯已选择性地转化为2-丁烯。在装有WO _x / KIT-6催化剂的第二个反应器中，2-丁烯与未转化的乙烯在450°C和0.1 MPa下反应。在这些条件下，在催化活性，对丙烯形成的选择性和对失活的稳定性方面取得了空前的结果。更准确地说，在反应流中24小时内，乙烯转化率为〜85％，对丙烯的选择性为55％，对丁烯的选择性为30％。