{"title":"PtFe@S-1 与 ZSM-5 偶联用于丙烷脱氢芳香化反应：酸度和 b 轴扩散距离的影响","authors":"Kai Bian, Sirui Liu, Jiaxing Zhang, Guanghui Zhang, Xinwei Zhang, Gideon Abaidoo Ocran, Mingrui Wang, Quanjie Liu, Shuandi Hou, Xinwen Guo","doi":"10.1021/acs.iecr.4c03194","DOIUrl":null,"url":null,"abstract":"A series of ZSM-5 zeolites with different acidities and <i>b</i>-axis diffusion distances were synthesized under hydrothermal conditions using the seed-induced method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ammonia temperature-programmed desorption (NH<sub>3</sub>-TPD), and infrared spectroscopic analysis of the adsorption of pyridine (Py-IR). The structure–activity relationships of PtFe@S-1&ZSM-5 tandem catalysts in the propane dehydro-aromatization reaction (PDA) were investigated, especially focusing on the impact of ZSM-5 acidity and <i>b</i>-axis diffusion distance. The results indicate that the ZSM-5 zeolite with a low Si/Al ratio (∼25) and suitable <i>b</i>-axis diffusion distance (∼100 nm) coupled with PtFe@S-1 is more conducive on improving the PDA catalytic performance. When the mass ratio of PtFe@S-1/ZSM-5 was 1:1, the propane conversion and aromatics selectivity of PtFe@S-1&ZSM-5–25 remained above 78.9% and 40.5% within 500 min on stream, respectively.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"64 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"PtFe@S-1 Coupling with ZSM-5 for the Propane Dehydro-Aromatization Reaction: The Effect of Acidity and b-Axis Diffusion Distance\",\"authors\":\"Kai Bian, Sirui Liu, Jiaxing Zhang, Guanghui Zhang, Xinwei Zhang, Gideon Abaidoo Ocran, Mingrui Wang, Quanjie Liu, Shuandi Hou, Xinwen Guo\",\"doi\":\"10.1021/acs.iecr.4c03194\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A series of ZSM-5 zeolites with different acidities and <i>b</i>-axis diffusion distances were synthesized under hydrothermal conditions using the seed-induced method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ammonia temperature-programmed desorption (NH<sub>3</sub>-TPD), and infrared spectroscopic analysis of the adsorption of pyridine (Py-IR). The structure–activity relationships of PtFe@S-1&ZSM-5 tandem catalysts in the propane dehydro-aromatization reaction (PDA) were investigated, especially focusing on the impact of ZSM-5 acidity and <i>b</i>-axis diffusion distance. The results indicate that the ZSM-5 zeolite with a low Si/Al ratio (∼25) and suitable <i>b</i>-axis diffusion distance (∼100 nm) coupled with PtFe@S-1 is more conducive on improving the PDA catalytic performance. When the mass ratio of PtFe@S-1/ZSM-5 was 1:1, the propane conversion and aromatics selectivity of PtFe@S-1&ZSM-5–25 remained above 78.9% and 40.5% within 500 min on stream, respectively.\",\"PeriodicalId\":39,\"journal\":{\"name\":\"Industrial & Engineering Chemistry Research\",\"volume\":\"64 1\",\"pages\":\"\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-11-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Industrial & Engineering Chemistry Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1021/acs.iecr.4c03194\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial & Engineering Chemistry Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1021/acs.iecr.4c03194","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
摘要
采用种子诱导法在水热条件下合成了一系列具有不同酸度和b轴扩散距离的ZSM-5沸石，并通过X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、氨水温度编程解吸（NH3-TPD）和吡啶吸附红外光谱分析（Py-IR）对其进行了表征。研究了 PtFe@S-1&ZSM-5 串联催化剂在丙烷脱氢芳构化反应（PDA）中的结构-活性关系，尤其关注了 ZSM-5 酸度和 b 轴扩散距离的影响。结果表明，低硅/铝比（∼25）和合适的b轴扩散距离（∼100 nm）的ZSM-5沸石与PtFe@S-1联用更有利于提高PDA催化性能。当 PtFe@S-1/ZSM-5 的质量比为 1:1 时，PtFe@S-1&ZSM-5-25 在 500 min 内的丙烷转化率和芳烃选择性分别保持在 78.9% 和 40.5% 以上。
PtFe@S-1 Coupling with ZSM-5 for the Propane Dehydro-Aromatization Reaction: The Effect of Acidity and b-Axis Diffusion Distance
A series of ZSM-5 zeolites with different acidities and b-axis diffusion distances were synthesized under hydrothermal conditions using the seed-induced method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ammonia temperature-programmed desorption (NH3-TPD), and infrared spectroscopic analysis of the adsorption of pyridine (Py-IR). The structure–activity relationships of PtFe@S-1&ZSM-5 tandem catalysts in the propane dehydro-aromatization reaction (PDA) were investigated, especially focusing on the impact of ZSM-5 acidity and b-axis diffusion distance. The results indicate that the ZSM-5 zeolite with a low Si/Al ratio (∼25) and suitable b-axis diffusion distance (∼100 nm) coupled with PtFe@S-1 is more conducive on improving the PDA catalytic performance. When the mass ratio of PtFe@S-1/ZSM-5 was 1:1, the propane conversion and aromatics selectivity of PtFe@S-1&ZSM-5–25 remained above 78.9% and 40.5% within 500 min on stream, respectively.
期刊介绍：
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
