Potential pathways for syngas transformation towards kerosene range hydrocarbons in a dual Fischer-Tropsch-zeolite bed,International Journal of Energy Research

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Potential pathways for syngas transformation towards kerosene range hydrocarbons in a dual Fischer-Tropsch-zeolite bed
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2021-11-10 , DOI: 10.1002/er.7460
Daniel Martínez del Monte ₁ , Arturo J. Vizcaíno ₁ , Javier Dufour _{1,

2} , Carmen Martos ₁

Affiliation

The Fischer-Tropsch synthesis is considered to be an alternative process to produce liquid hydrocarbons in an environmentally sustainable way by using synthesis gas obtained from renewable resources. The combination of acid catalysts, such as zeolites, with Fischer-Tropsch catalysts could lead to an increase in the selectivity to an specific range of hydrocarbons, such as synthetic paraffinic kerosene. Therefore, the conversion of synthesis gas in hydrocarbons within kerosene range using catalytic dual beds formed by a potassium-cobalt-promoted iron and zeolites H-ZSM-5 and H-ZSM-12 has been studied. The reactions have been carried out at 250°C, 20 bar in a stacked fixed dual bed using synthesis gas with a H₂:CO molar ratio of 2 during 60 hours. The selectivity towards C9-C16 hydrocarbons was increased from 25% using the FT catalyst without zeolite, and up to 30% by using zeolites H-ZSM-5 or H-ZSM-12 with a Si/Al of 30 and 60, respectively. The results allowed the development of a reaction scheme suitable to design a tunable process for the synthesis gas conversion.

中文翻译：

在双费托沸石床中合成气转化为煤油范围烃的潜在途径

Fischer-Tropsch 合成被认为是一种通过使用从可再生资源获得的合成气以环境可持续的方式生产液态烃的替代工艺。酸催化剂（例如沸石）与费托催化剂的组合可以提高对特定范围的烃（例如合成链烷烃煤油）的选择性。因此，研究了使用由钾钴促进的铁和沸石 H-ZSM-5 和 H-ZSM-12 形成的催化双床将合成气转化为煤油范围内的烃类。反应在 250°C、20 bar 的堆叠固定双床中使用 H _{2合成气进行}在 60 小时内：CO 摩尔比为 2。对 C9-C16 烃的选择性从使用不含沸石的 FT 催化剂的 25% 提高到使用 Si/Al 分别为 30 和 60 的沸石 H-ZSM-5 或 H-ZSM-12 提高到 30%。结果允许开发适合设计用于合成气转化的可调过程的反应方案。

更新日期：2021-11-10

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