M. A. Tedeeva, M. Yu. Mashkin, E. M. Kuprikova, P. V. Pribytkov, K. B. Kalmykov, A. V. Leonov, N. A. Davshan, S. F. Dunaev, A. L. Kustov
{"title":"支撑结构对含铬催化剂在涉及二氧化碳的丙烷脱氢过程中活性的影响","authors":"M. A. Tedeeva, M. Yu. Mashkin, E. M. Kuprikova, P. V. Pribytkov, K. B. Kalmykov, A. V. Leonov, N. A. Davshan, S. F. Dunaev, A. L. Kustov","doi":"10.1134/S0036024424701358","DOIUrl":null,"url":null,"abstract":"<p>A series of chromium oxide catalysts supported on SiO<sub>2</sub> with 5 wt % chromium were synthesized and studied. Silica gel was synthesized by a procedure using the cetyltrimethylammonium bromide template and hydrocarbons capable of solubilization in CTMABr micelles, namely, hexane, cyclohexane, and toluene as “extenders.” The resulting series of supports and catalysts were characterized by physicochemical methods: low-temperature adsorption of N<sub>2</sub>, XRD, SEM–EDX, and UV–Vis diffuse reflectance spectroscopy. The highest catalytic activity in propane dehydrogenation in the presence of CO<sub>2</sub> was exhibited by the 5Cr/SiO<sub>2</sub>–hexane sample, whose surface contains Cr(III) coexisting with Cr(VI). At 750°C propane conversion was 59.8%; propylene selectivity, 56.2%.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 10","pages":"2211 - 2218"},"PeriodicalIF":0.7000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Support Structure on the Activity of Cr-Containing Catalysts in Propane Dehydrogenation Involving CO2\",\"authors\":\"M. A. Tedeeva, M. Yu. Mashkin, E. M. Kuprikova, P. V. Pribytkov, K. B. Kalmykov, A. V. Leonov, N. A. Davshan, S. F. Dunaev, A. L. Kustov\",\"doi\":\"10.1134/S0036024424701358\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A series of chromium oxide catalysts supported on SiO<sub>2</sub> with 5 wt % chromium were synthesized and studied. Silica gel was synthesized by a procedure using the cetyltrimethylammonium bromide template and hydrocarbons capable of solubilization in CTMABr micelles, namely, hexane, cyclohexane, and toluene as “extenders.” The resulting series of supports and catalysts were characterized by physicochemical methods: low-temperature adsorption of N<sub>2</sub>, XRD, SEM–EDX, and UV–Vis diffuse reflectance spectroscopy. The highest catalytic activity in propane dehydrogenation in the presence of CO<sub>2</sub> was exhibited by the 5Cr/SiO<sub>2</sub>–hexane sample, whose surface contains Cr(III) coexisting with Cr(VI). At 750°C propane conversion was 59.8%; propylene selectivity, 56.2%.</p>\",\"PeriodicalId\":767,\"journal\":{\"name\":\"Russian Journal of Physical Chemistry A\",\"volume\":\"98 10\",\"pages\":\"2211 - 2218\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Physical Chemistry A\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0036024424701358\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036024424701358","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effect of Support Structure on the Activity of Cr-Containing Catalysts in Propane Dehydrogenation Involving CO2
A series of chromium oxide catalysts supported on SiO2 with 5 wt % chromium were synthesized and studied. Silica gel was synthesized by a procedure using the cetyltrimethylammonium bromide template and hydrocarbons capable of solubilization in CTMABr micelles, namely, hexane, cyclohexane, and toluene as “extenders.” The resulting series of supports and catalysts were characterized by physicochemical methods: low-temperature adsorption of N2, XRD, SEM–EDX, and UV–Vis diffuse reflectance spectroscopy. The highest catalytic activity in propane dehydrogenation in the presence of CO2 was exhibited by the 5Cr/SiO2–hexane sample, whose surface contains Cr(III) coexisting with Cr(VI). At 750°C propane conversion was 59.8%; propylene selectivity, 56.2%.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
