O. N. Kovalenko, I. I. Simentsova, V. N. Panchenko, M. N. Timofeeva
{"title":"沸石的结构和酸度对甘油和丙酮合成 Solketal 的影响","authors":"O. N. Kovalenko, I. I. Simentsova, V. N. Panchenko, M. N. Timofeeva","doi":"10.1134/S207005042304013X","DOIUrl":null,"url":null,"abstract":"<p>A study is performed to establish the main factors that allow regulation of the activity and selectivity of the synthesis of solketal from glycerol and acetone, and the acidic and catalytic properties of mordenite zeolites (MOR, SiO<sub>2</sub> : Al<sub>2</sub>O<sub>3</sub> = 29.2) and faujasite (FAU, SiO<sub>2</sub> : Al<sub>2</sub>O<sub>3</sub> = 14.9; 97 and 810). The reaction is studied in a methanol solution at an acetone : glycerol molar ratio of 2.5 and a temperature of 25–50°C. Using zeolites, the main product is solketal with a selectivity of 88.1–94.7%. It is shown that the main factors determining the conversion of glycerol and the yield of solketal are the accessibility of the reagents to active sites, the number and strength of acid sites, and their resistance to the toxic action of water molecules that form during the reaction.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"410 - 419"},"PeriodicalIF":0.7000,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of the Structure and Acidity of Zeolites on the Synthesis of Solketal from Glycerol and Acetone\",\"authors\":\"O. N. Kovalenko, I. I. Simentsova, V. N. Panchenko, M. N. Timofeeva\",\"doi\":\"10.1134/S207005042304013X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A study is performed to establish the main factors that allow regulation of the activity and selectivity of the synthesis of solketal from glycerol and acetone, and the acidic and catalytic properties of mordenite zeolites (MOR, SiO<sub>2</sub> : Al<sub>2</sub>O<sub>3</sub> = 29.2) and faujasite (FAU, SiO<sub>2</sub> : Al<sub>2</sub>O<sub>3</sub> = 14.9; 97 and 810). The reaction is studied in a methanol solution at an acetone : glycerol molar ratio of 2.5 and a temperature of 25–50°C. Using zeolites, the main product is solketal with a selectivity of 88.1–94.7%. It is shown that the main factors determining the conversion of glycerol and the yield of solketal are the accessibility of the reagents to active sites, the number and strength of acid sites, and their resistance to the toxic action of water molecules that form during the reaction.</p>\",\"PeriodicalId\":507,\"journal\":{\"name\":\"Catalysis in Industry\",\"volume\":\"15 4\",\"pages\":\"410 - 419\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2023-12-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis in Industry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S207005042304013X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis in Industry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S207005042304013X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Effect of the Structure and Acidity of Zeolites on the Synthesis of Solketal from Glycerol and Acetone
A study is performed to establish the main factors that allow regulation of the activity and selectivity of the synthesis of solketal from glycerol and acetone, and the acidic and catalytic properties of mordenite zeolites (MOR, SiO2 : Al2O3 = 29.2) and faujasite (FAU, SiO2 : Al2O3 = 14.9; 97 and 810). The reaction is studied in a methanol solution at an acetone : glycerol molar ratio of 2.5 and a temperature of 25–50°C. Using zeolites, the main product is solketal with a selectivity of 88.1–94.7%. It is shown that the main factors determining the conversion of glycerol and the yield of solketal are the accessibility of the reagents to active sites, the number and strength of acid sites, and their resistance to the toxic action of water molecules that form during the reaction.
期刊介绍：
The journal covers the following topical areas:
Analysis of specific industrial catalytic processes: Production and use of catalysts in branches of industry: chemical, petrochemical, oil-refining, pharmaceutical, organic synthesis, fuel-energetic industries, environment protection, biocatalysis; technology of industrial catalytic processes (generalization of practical experience, improvements, and modernization); technology of catalysts production, raw materials and equipment; control of catalysts quality; starting, reduction, passivation, discharge, storage of catalysts; catalytic reactors.Theoretical foundations of industrial catalysis and technologies: Research, studies, and concepts : search for and development of new catalysts and new types of supports, formation of active components, and mechanochemistry in catalysis; comprehensive studies of work-out catalysts and analysis of deactivation mechanisms; studies of the catalytic process at different scale levels (laboratory, pilot plant, industrial); kinetics of industrial and newly developed catalytic processes and development of kinetic models; nonlinear dynamics and nonlinear phenomena in catalysis: multiplicity of stationary states, stepwise changes in regimes, etc. Advances in catalysis: Catalysis and gas chemistry; catalysis and new energy technologies; biocatalysis; nanocatalysis; catalysis and new construction materials.History of the development of industrial catalysis.
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