Effect of MgO promoter on Ru/γ-Al2O3 catalysts for tricyclopentadiene hydrogenation
作者:Youri Park、Huiji Ku、Jae-Yong An、Jeongsik Han、Chae-Ho Shin、Jong-Ki Jeon
DOI:10.1016/j.cattod.2020.01.003
日期:2020.8
addition of MgO has the effect of alleviating the decrease of the specific surface area during the repetitive regeneration procedure. The addition of MgO had no significant effect on the reducibility of the Ru/γ-Al2O3 catalyst. The results of XRD, CO chemisorption and TEM imagery show that the addition of MgO to the Ru/γ-Al2O3 catalyst has the effect of decreasing the mobility of Ru atoms during repetitive
本研究的目的是阐明的MgO促进剂在Ru /γ-Al的催化物理-化学性质的影响2 Ó 3种的三环戊二烯(TCPD)加氢反应期间催化剂和活性。对Ru /γ-Al系2 ö 3和Ru-MgO的/γ-Al系2个ö 3催化剂通过共沉淀法制造,并形成在珠类型。的比表面积再生的Ru-的MgO /γ-Al系2 ö 3催化剂比再生的大得多的Ru /γ-Al系2 ö 3催化剂。已经证实,添加MgO具有减轻重复再生过程中比表面积减小的作用。在添加MgO的具有在Ru /γ-Al的还原性无显著效果2 ö 3催化剂。XRD,CO化学吸附和TEM图像显示的结果可知,添加MgO到的Ru /γ-Al系2 ö 3催化剂在650°C的反复再生过程中具有降低Ru原子迁移率的作用。可以肯定的是,在四个重复的再生试验中,催化剂的失活程度远低于未促进催化剂的失活程度,这可能是因为添加MgO阻止了650°C的再生温度下Ru的烧结。在Ru-MgO的/γ-Al系2