{"title":"Design of novel hierarchical cage active particles and zeolite for the direct conversion of syngas to gasoline fuel†","authors":"Yulan Zhang and Xizhu Lin","doi":"10.1039/D4NJ00900B","DOIUrl":null,"url":null,"abstract":"<p >Although the direct conversion of syngas to gasoline fuel offers a promising route to produce liquid fuel from non-petroleum carbon resources, it remains a great challenge owing to low target product selectivity and poor catalyst stability. Hence, we designed a bifunctional catalyst consisting of SiO<small><sub>2</sub></small>-coated novel hierarchical porous cage active particles and hierarchical porous zeolite, which provided a C<small><sub>5</sub></small>–C<small><sub>11</sub></small> hydrocarbon selectivity of 63.5 wt%, and the yield reached 99.3% in C<small><sub>5+</sub></small> hydrocarbons, with an aromatic content of 25.7% at 280 °C. Particularly, this value is within the range of the restricted aromatic content. As the reaction temperature was elevated to 310 °C, zeolite-24 presented an excellent aromatic selectivity of 64.4% in liquid hydrocarbons. This is mainly because the zeolite provides higher acidity at a rather high reaction temperature, facilitating the formation of hydrocarbons in the liquid phase, which were predominantly aromatics rather than i-C<small><sub>5+</sub></small>. Besides aromatics, a high i-C<small><sub>5+</sub></small> content of 77.4% in liquid hydrocarbons was obtained at 280 °C over FeZ-16. At the given condition, the synthesized hybrid catalysts were beneficial for the production of gasoline fuels consisting of aromatics and i-C<small><sub>5+</sub></small>. Particularly, 280 °C offered optimum selectivity to i-C<small><sub>5+</sub></small>, and 310 °C was suitable for the formation of aromatics. This work provides a strategy for the design and preparation of novel and efficient catalysts for gasoline production.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"New Journal of Chemistry","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/nj/d4nj00900b","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Although the direct conversion of syngas to gasoline fuel offers a promising route to produce liquid fuel from non-petroleum carbon resources, it remains a great challenge owing to low target product selectivity and poor catalyst stability. Hence, we designed a bifunctional catalyst consisting of SiO2-coated novel hierarchical porous cage active particles and hierarchical porous zeolite, which provided a C5–C11 hydrocarbon selectivity of 63.5 wt%, and the yield reached 99.3% in C5+ hydrocarbons, with an aromatic content of 25.7% at 280 °C. Particularly, this value is within the range of the restricted aromatic content. As the reaction temperature was elevated to 310 °C, zeolite-24 presented an excellent aromatic selectivity of 64.4% in liquid hydrocarbons. This is mainly because the zeolite provides higher acidity at a rather high reaction temperature, facilitating the formation of hydrocarbons in the liquid phase, which were predominantly aromatics rather than i-C5+. Besides aromatics, a high i-C5+ content of 77.4% in liquid hydrocarbons was obtained at 280 °C over FeZ-16. At the given condition, the synthesized hybrid catalysts were beneficial for the production of gasoline fuels consisting of aromatics and i-C5+. Particularly, 280 °C offered optimum selectivity to i-C5+, and 310 °C was suitable for the formation of aromatics. This work provides a strategy for the design and preparation of novel and efficient catalysts for gasoline production.