Influence of Tin Loading and Pore Size of Sn/MCM-41 Catalysts on the Synthesis of Nopol
| العنوان: | Influence of Tin Loading and Pore Size of Sn/MCM-41 Catalysts on the Synthesis of Nopol |
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| المؤلفون: | Edwin Alarcón, Aída-Luz Villa, Carlos A. Carrero, Juan M. Venegas, William P. McDermott, Daniel Casas-Orozco, Ellen Klosterman, Ive Hermans |
| المصدر: | Industrial & Engineering Chemistry Research. 56:6590-6598 |
| بيانات النشر: | American Chemical Society (ACS), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Materials science, 010405 organic chemistry, Silica gel, General Chemical Engineering, Inorganic chemistry, chemistry.chemical_element, General Chemistry, 010402 general chemistry, 01 natural sciences, Industrial and Manufacturing Engineering, 0104 chemical sciences, Catalysis, Metal, chemistry.chemical_compound, chemistry, Octahedron, MCM-41, visual_art, Monolayer, visual_art.visual_art_medium, Tin, Incipient wetness impregnation |
| الوصف: | In this work, we investigate the influence of the Sn-loading and the pore size of MCM-41 materials on catalytic nopol production. Sn(IV) was anchored onto MCM-41 by incipient wetness impregnation with metal coverages within 0.01 and 0.5 Sn nm–2 (i.e., below the monolayer content). We provide evidence that at coverages below 0.06 Sn nm–2, Sn(IV) is predominantly present as isolated centers, whereas at higher coverages octahedral and/or oligomeric species are formed, which exhibit lower catalytic activity. The rate of nopol production over Sn/MCM-41 was ten times higher than that of analogous Sn silica gel materials. The turnover frequency features a maximum as a function of Sn coverage between 0.03 and 0.05 Sn nm–2 for Sn/MCM-41 catalysts and 0.15 Sn nm–2 for Sn silica gel materials. These results show that both the metal content and pore size can be tuned to enhance catalytic performance of Sn/MCM-41 materials. |
| تدمد: | 1520-5045 0888-5885 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::08d0368d738fd2afc7885787daec3b6c https://doi.org/10.1021/acs.iecr.7b00789 |
| رقم الأكسشن: | edsair.doi...........08d0368d738fd2afc7885787daec3b6c |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15205045 08885885 |
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