文献类型：期刊文献

英文题名：Design of novel hierarchical cage active particles and zeolite for the direct conversion of syngas to gasoline fuel

作者：Zhang, Yulan Lin, Xizhu

第一作者：张玉兰

通信作者：Zhang, YL[1]

机构：[1]Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Doctor Rd Dang Wu Town Guian New Area, Guiyang, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Key Lab Light Met Mat Proc Guizhou Prov, Doctor Rd Dang Wu Town Guian New Area, Guiyang, Peoples R China.|贵州理工学院;

年份：2024

卷号：48

期号：29

起止页码：13000-13009

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20242816689811);Scopus(收录号：2-s2.0-85198062526);WOS:【SCI-EXPANDED(收录号:WOS:001264499100001)】；

基金：This work was financially supported by National Nature Science Foundation of China [22368015] and Guizhou Province science and technology plan project (QianKeHeJiChu-ZK[2023]YiBan128).

语种：英文

外文关键词：Aromatic hydrocarbons - Aromatization - Catalyst selectivity - Gasoline - Silica - Synthesis gas

摘要：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 degrees C. Particularly, this value is within the range of the restricted aromatic content. As the reaction temperature was elevated to 310 degrees 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 degrees 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 degrees C offered optimum selectivity to i-C5+, and 310 degrees 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. Physical mixing of SiO2-stabilized novel hierarchical cage particles with zeolites result in hybrid catalysts that provide a C5+ hydrocarbon content of 99.3% in gasoline fuels.