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Heavy oil cracking in the presence of steam and nanodispersed catalysts based on different metals
Fuel Processing Technology ( IF 7.5 ) Pub Date : 2020-03-01 , DOI: 10.1016/j.fuproc.2019.106239
Petr M. Yeletsky , Olesya O. Zaikina , Gleb A. Sosnin , Roman G. Kukushkin , Vadim A. Yakovlev

Abstract Catalytic steam cracking (CSC) of Tatar heavy oil has been studied using nanodispersed catalysts forming in situ based on K, Fe, Ni, Mo as well as several Mo-based catalysts promoted by Ni-, Co-, and Al-based additives. The upgrading was carried out at 425 °C, catalyst content of 2 wt%, water to heavy oil wt. ratio of 0.3:1, and 1 h of residence time using a batch reactor. The highest upgrading efficacy was found in the case of non-promoted Mo-based catalyst: at a low coke yield the upgraded oil had the lowest S content as well as the highest H:С ratio. The participation of water in the case of Mo- and Ni-dispersed catalysts was confirmed by comparison with the water-free cracking experiments at the same conditions. XRD and TEM characterization have shown that the active components were in a form of oxides and/or sulfides.

中文翻译:

在蒸汽和基于不同金属的纳米分散催化剂存在下重油裂化

摘要 使用原位形成的基于 K、Fe、Ni、Mo 的纳米分散催化剂以及由 Ni、Co 和 Al 基添加剂促进的几种钼基催化剂,研究了鞑靼重油的催化蒸汽裂化 (CSC)。 . 改质在 425 °C、催化剂含量为 2 wt%、水至重油 wt% 的条件下进行。0.3:1 的比例,使用间歇式反应器的停留时间为 1 小时。在未促进的 Mo 基催化剂的情况下发现了最高的升级效率:在低焦炭产率下,升级后的油具有最低的 S 含量和最高的 H:С 比。通过与相同条件下的无水裂化实验进行比较,证实了在 Mo 和 Ni 分散催化剂的情况下水的参与。XRD 和 TEM 表征表明活性成分呈氧化物和/或硫化物的形式。
更新日期:2020-03-01
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