A. A. Nepomnyashchii, V. L. Yurpalov, E. A. Buluchevskiy, V. A. Drozdov, T. I. Gulyaeva, R. M. Mironenko, A. V. Lavrenov
{"title":"葵花籽油在 Pt/WOx-Al2O3 催化剂上的加氢脱氧反应","authors":"A. A. Nepomnyashchii, V. L. Yurpalov, E. A. Buluchevskiy, V. A. Drozdov, T. I. Gulyaeva, R. M. Mironenko, A. V. Lavrenov","doi":"10.1134/s2070050424700090","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The authors study the effect of the tungsten oxide in the supports of 0.5% Pt/WO<sub><i>x</i></sub>-Al<sub>2</sub>O<sub>3</sub> catalysts on their acidity, deposited platinum dispersity, and catalytic properties in the hydrodeoxygenation of sunflower oil. It is shown that the of Brønsted acid sites on its surface grows, and the dispersity of deposited platinum in the ready catalyst is reduced when the content of the modifier is increased. The studied samples ensure complete sunflower oil conversion in a hydrogen atmosphere at a liquid weight hourly space velocity (WHSV) of 1 h<sup>−1</sup>, a temperature of 380°C, and a total pressure of 4 MPa the composition of the support. A nearly stoichiometric yield of C<sub>5+</sub> products at a level of 82–86 wt % is attained. The acidic properties of the 0.5% Pt/WO<sub><i>x</i></sub>-Al<sub>2</sub>O<sub>3</sub> system determine the possibility for synthesizing the components of diesels with high contents of <i>iso</i>-alkanes as a result of sunflower oil hydrodeoxygenation. Using a catalyst with a nominal tungsten content of 15 wt % WO<sub>3</sub> brings the content of <i>iso</i>-paraffins up to 74% with complete conversion of the initial feedstock for no less than 24 h.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hydrodeoxygenation of Sunflower Oil on Pt/WOx-Al2O3 Catalyst\",\"authors\":\"A. A. Nepomnyashchii, V. L. Yurpalov, E. A. Buluchevskiy, V. A. Drozdov, T. I. Gulyaeva, R. M. Mironenko, A. V. Lavrenov\",\"doi\":\"10.1134/s2070050424700090\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>The authors study the effect of the tungsten oxide in the supports of 0.5% Pt/WO<sub><i>x</i></sub>-Al<sub>2</sub>O<sub>3</sub> catalysts on their acidity, deposited platinum dispersity, and catalytic properties in the hydrodeoxygenation of sunflower oil. It is shown that the of Brønsted acid sites on its surface grows, and the dispersity of deposited platinum in the ready catalyst is reduced when the content of the modifier is increased. The studied samples ensure complete sunflower oil conversion in a hydrogen atmosphere at a liquid weight hourly space velocity (WHSV) of 1 h<sup>−1</sup>, a temperature of 380°C, and a total pressure of 4 MPa the composition of the support. A nearly stoichiometric yield of C<sub>5+</sub> products at a level of 82–86 wt % is attained. The acidic properties of the 0.5% Pt/WO<sub><i>x</i></sub>-Al<sub>2</sub>O<sub>3</sub> system determine the possibility for synthesizing the components of diesels with high contents of <i>iso</i>-alkanes as a result of sunflower oil hydrodeoxygenation. Using a catalyst with a nominal tungsten content of 15 wt % WO<sub>3</sub> brings the content of <i>iso</i>-paraffins up to 74% with complete conversion of the initial feedstock for no less than 24 h.</p>\",\"PeriodicalId\":507,\"journal\":{\"name\":\"Catalysis in Industry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-05-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis in Industry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1134/s2070050424700090\",\"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://doi.org/10.1134/s2070050424700090","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Hydrodeoxygenation of Sunflower Oil on Pt/WOx-Al2O3 Catalyst
Abstract
The authors study the effect of the tungsten oxide in the supports of 0.5% Pt/WOx-Al2O3 catalysts on their acidity, deposited platinum dispersity, and catalytic properties in the hydrodeoxygenation of sunflower oil. It is shown that the of Brønsted acid sites on its surface grows, and the dispersity of deposited platinum in the ready catalyst is reduced when the content of the modifier is increased. The studied samples ensure complete sunflower oil conversion in a hydrogen atmosphere at a liquid weight hourly space velocity (WHSV) of 1 h−1, a temperature of 380°C, and a total pressure of 4 MPa the composition of the support. A nearly stoichiometric yield of C5+ products at a level of 82–86 wt % is attained. The acidic properties of the 0.5% Pt/WOx-Al2O3 system determine the possibility for synthesizing the components of diesels with high contents of iso-alkanes as a result of sunflower oil hydrodeoxygenation. Using a catalyst with a nominal tungsten content of 15 wt % WO3 brings the content of iso-paraffins up to 74% with complete conversion of the initial feedstock for no less than 24 h.
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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