CO_2加氢制低碳烯烃Fe/Silicalite-2催化剂研究 Ⅲ.K-Fe-MnO/Silicalite-2催化剂性能考察

Study of Fe/Silicalite 2 catalyst for CO 2 hydrogenation to light olefins Ⅲ.Catalytic performance of K Fe MnO/Si 2

研究开发了一种具有高催化活性和高低碳烯烃选择性的Ｋ－Ｆｅ－ＭｎＯ／Ｓｉ－２担载型催化剂；考察了Ｖ（ＣＯ２）／Ｖ（Ｈ２）比、反应温度、反应气空速和反应压力对Ｋ－Ｆｅ－ＭｎＯ／Ｓｉ－２催化剂ＣＯ２加氢反应制低碳烯烃选择性及催化活性的影响；考察催化剂稳定性及再生性能，对催化剂进行差热－热重分析结果表明，Ｋ－Ｆｅ－ＭｎＯ／Ｓｉ－２催化剂具有很好的催化稳定性能。

A new K Fe MnO/Silicalite 2 catalyst with excellent acitivity and selectivity has been developed for CO 2 hydrogenation to light olefins. The effects of V (CO 2)/ V (H 2) ratio, reaction temperature and pressure,and GHSV on catalytic activity and light olefin selectivity of the K Fe MnO/Si 2 in CO 2 hydrogenation are investigated. The catalyst is characterized for its stability and regeneration behavior by thermogravimetric analysis, and the result shows that the K Fe MnO/Si 2 catalyst has satisfactory stability and catalytic performance.