A. V. Kurochkin, K. A. Seromlyanova, M. M. Selivanova, D. N. Malyshev, A. D. Tereshkina, N. N. Lobanov, E. B. Markova, A. G. Cherednichenko
{"title":"复合氧化物催化剂在丙烷裂解中的应用","authors":"A. V. Kurochkin, K. A. Seromlyanova, M. M. Selivanova, D. N. Malyshev, A. D. Tereshkina, N. N. Lobanov, E. B. Markova, A. G. Cherednichenko","doi":"10.1134/S0965544124030083","DOIUrl":null,"url":null,"abstract":"<p>The study investigates propane conversion in the presence of rare-earth metal zirconates Ln<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> (Ln = La, Gd, and Lu) prepared by high-temperature solid-phase synthesis at 500, 1000, and 1500°C. In the La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> → Gd<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> → Lu<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> series, the phase transitions were found to follow the pyrochlore → defective fluorite → δ-phase route. This changed the parameters of the crystalline and local structures and, in particular, led to the appearance of oxygen vacancies in pyrochlore-based compounds. As a result of the structural changes, propane dehydrogenation prevailed over propane degradation. Therefore, the Lu<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> catalyst exhibited a higher propylene selectivity (up to 65%) than La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>, with 100% propane conversion being achieved.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 3","pages":"413 - 420"},"PeriodicalIF":1.3000,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Complex-Oxide Catalysts in Cracking of Propane\",\"authors\":\"A. V. Kurochkin, K. A. Seromlyanova, M. M. Selivanova, D. N. Malyshev, A. D. Tereshkina, N. N. Lobanov, E. B. Markova, A. G. Cherednichenko\",\"doi\":\"10.1134/S0965544124030083\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The study investigates propane conversion in the presence of rare-earth metal zirconates Ln<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> (Ln = La, Gd, and Lu) prepared by high-temperature solid-phase synthesis at 500, 1000, and 1500°C. In the La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> → Gd<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> → Lu<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> series, the phase transitions were found to follow the pyrochlore → defective fluorite → δ-phase route. This changed the parameters of the crystalline and local structures and, in particular, led to the appearance of oxygen vacancies in pyrochlore-based compounds. As a result of the structural changes, propane dehydrogenation prevailed over propane degradation. Therefore, the Lu<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> catalyst exhibited a higher propylene selectivity (up to 65%) than La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>, with 100% propane conversion being achieved.</p>\",\"PeriodicalId\":725,\"journal\":{\"name\":\"Petroleum Chemistry\",\"volume\":\"64 3\",\"pages\":\"413 - 420\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-06-21\",\"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/S0965544124030083\",\"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/S0965544124030083","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}
The study investigates propane conversion in the presence of rare-earth metal zirconates Ln2Zr2O7 (Ln = La, Gd, and Lu) prepared by high-temperature solid-phase synthesis at 500, 1000, and 1500°C. In the La2Zr2O7 → Gd2Zr2O7 → Lu2Zr2O7 series, the phase transitions were found to follow the pyrochlore → defective fluorite → δ-phase route. This changed the parameters of the crystalline and local structures and, in particular, led to the appearance of oxygen vacancies in pyrochlore-based compounds. As a result of the structural changes, propane dehydrogenation prevailed over propane degradation. Therefore, the Lu2Zr2O7 catalyst exhibited a higher propylene selectivity (up to 65%) than La2Zr2O7, with 100% propane conversion being achieved.
期刊介绍：
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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