A new route for C(2)H(4) production by reacting C(2)H(6) with CO(2) over a catalyst of chromium oxide supported on silicalite-2 type zeolite

A Cr/Si-2 catalyst was developed to possess good reactivity for the formation of ethylene from ethane oxidative dehydrogenation with CO(2) The addition of Mn and La oxide could improve the reactivity of the catalyst. It was also found that increasing the CO(2)/C(2)H(6) ratio of the feed gas could increase the ethane conversion and ethylene selectivity of the Cr/Si-2 catalyst. Besides, addition of steam to the feed gas could diminish coke formation during the reaction process. The main reactions for the dehydrogenation of ethane with CO(2) to ethylene have been deduced to consist of the cracking of ethane to ethylene and CO(2) hydrogenation to CO