G. A. Kireev, N. R. Demikhova, L. D. Zatsepina, E. M. Smirnova, Yu. F. Gushchina, Ya. A. Chudakov, E. V. Ivanov, A. P. Glotov
{"title":"粘合剂类型对基于 MFI 沸石的含铂催化剂在芳香族 С8 馏分异构化中的活性的影响","authors":"G. A. Kireev, N. R. Demikhova, L. D. Zatsepina, E. M. Smirnova, Yu. F. Gushchina, Ya. A. Chudakov, E. V. Ivanov, A. P. Glotov","doi":"10.1134/S0965544124030058","DOIUrl":null,"url":null,"abstract":"<p>One of the steps in scaling the technology for the synthesis of zeolite-containing catalysts from the laboratory to commercial level is support forming. In this study, halloysite nanotubes and aluminum oxide were used as binders for preparing a support based on MFI (ZSM-5) zeolite. The Pt catalysts (Pt/ZSM-5/Al<sub>2</sub>O<sub>3</sub> and Pt/ZSM-5/Hall) were tested in isomerization of the aromatic C<sub>8</sub> fraction. The forming of supports influenced not only mechanical but also physicochemical properties of the catalysts. On introducing binders into the catalytic system, the fraction of mesopores in the total pore volume of the supports increased, the acidity of the samples decreased, and the ratio of the amounts of the weak and strong acid sites changed. The use of aluminum oxide and halloysite as binders leads to different pathways of the transformation of the aromatic feedstock. The main side reactions observed in the presence of Pt/ZSM-5/Al<sub>2</sub>O<sub>3</sub> and Pt/ZSM-5/Hall catalysts are hydrocracking of alkylaromatic hydrocarbons and their transalkylation/disproportionation, respectively. The best results were obtained at 380°C and feed space velocity of 6 h<sup>–1</sup> with Pt/ZSM-5/Hall: <i>p</i>-/<i>о</i>-xylene ratio 1.05, loss of xylenes 4.31%, and ethylbenzene conversion 34%.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 2","pages":"278 - 289"},"PeriodicalIF":1.3000,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of the Binder Type on the Activity of Pt-Containing Catalysts Based on MFI Zeolite in Isomerization of the Aromatic С8 Fraction\",\"authors\":\"G. A. Kireev, N. R. Demikhova, L. D. Zatsepina, E. M. Smirnova, Yu. F. Gushchina, Ya. A. Chudakov, E. V. Ivanov, A. P. Glotov\",\"doi\":\"10.1134/S0965544124030058\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>One of the steps in scaling the technology for the synthesis of zeolite-containing catalysts from the laboratory to commercial level is support forming. In this study, halloysite nanotubes and aluminum oxide were used as binders for preparing a support based on MFI (ZSM-5) zeolite. The Pt catalysts (Pt/ZSM-5/Al<sub>2</sub>O<sub>3</sub> and Pt/ZSM-5/Hall) were tested in isomerization of the aromatic C<sub>8</sub> fraction. The forming of supports influenced not only mechanical but also physicochemical properties of the catalysts. On introducing binders into the catalytic system, the fraction of mesopores in the total pore volume of the supports increased, the acidity of the samples decreased, and the ratio of the amounts of the weak and strong acid sites changed. The use of aluminum oxide and halloysite as binders leads to different pathways of the transformation of the aromatic feedstock. The main side reactions observed in the presence of Pt/ZSM-5/Al<sub>2</sub>O<sub>3</sub> and Pt/ZSM-5/Hall catalysts are hydrocracking of alkylaromatic hydrocarbons and their transalkylation/disproportionation, respectively. The best results were obtained at 380°C and feed space velocity of 6 h<sup>–1</sup> with Pt/ZSM-5/Hall: <i>p</i>-/<i>о</i>-xylene ratio 1.05, loss of xylenes 4.31%, and ethylbenzene conversion 34%.</p>\",\"PeriodicalId\":725,\"journal\":{\"name\":\"Petroleum Chemistry\",\"volume\":\"64 2\",\"pages\":\"278 - 289\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Petroleum Chemistry\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0965544124030058\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ORGANIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Petroleum Chemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0965544124030058","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
Influence of the Binder Type on the Activity of Pt-Containing Catalysts Based on MFI Zeolite in Isomerization of the Aromatic С8 Fraction
One of the steps in scaling the technology for the synthesis of zeolite-containing catalysts from the laboratory to commercial level is support forming. In this study, halloysite nanotubes and aluminum oxide were used as binders for preparing a support based on MFI (ZSM-5) zeolite. The Pt catalysts (Pt/ZSM-5/Al2O3 and Pt/ZSM-5/Hall) were tested in isomerization of the aromatic C8 fraction. The forming of supports influenced not only mechanical but also physicochemical properties of the catalysts. On introducing binders into the catalytic system, the fraction of mesopores in the total pore volume of the supports increased, the acidity of the samples decreased, and the ratio of the amounts of the weak and strong acid sites changed. The use of aluminum oxide and halloysite as binders leads to different pathways of the transformation of the aromatic feedstock. The main side reactions observed in the presence of Pt/ZSM-5/Al2O3 and Pt/ZSM-5/Hall catalysts are hydrocracking of alkylaromatic hydrocarbons and their transalkylation/disproportionation, respectively. The best results were obtained at 380°C and feed space velocity of 6 h–1 with Pt/ZSM-5/Hall: p-/о-xylene ratio 1.05, loss of xylenes 4.31%, and ethylbenzene conversion 34%.
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Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas.
Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.
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