Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel
Nanopowders of hydroxyapatite (HA) and Fe-substituted hydroxyapatite (HAFe) were synthesized by wet precipitation on either MCM-41 (a synthetic, mesoporous aluminosilicate material) or an aluminum-containing MCM-41 (AlMCM) support. According to X-ray diffraction data, all of the synthesized material...
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2025-05-01
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| author | Nadezhda O. Donskaya Margarita A. Goldberg Alexander S. Fomin Anna O. Koptelova Polina D. Domashkina Ekaterina A. Eseva Olga S. Antonova Anatoliy A. Konovalov Alexander V. Leonov Egor A. Kudryavtsev Fadis F. Murzakhanov Marat R. Gafurov Argam V. Akopyan Sergey M. Barinov Vladimir S. Komlev |
| author_facet | Nadezhda O. Donskaya Margarita A. Goldberg Alexander S. Fomin Anna O. Koptelova Polina D. Domashkina Ekaterina A. Eseva Olga S. Antonova Anatoliy A. Konovalov Alexander V. Leonov Egor A. Kudryavtsev Fadis F. Murzakhanov Marat R. Gafurov Argam V. Akopyan Sergey M. Barinov Vladimir S. Komlev |
| author_sort | Nadezhda O. Donskaya |
| collection | DOAJ |
| description | Nanopowders of hydroxyapatite (HA) and Fe-substituted hydroxyapatite (HAFe) were synthesized by wet precipitation on either MCM-41 (a synthetic, mesoporous aluminosilicate material) or an aluminum-containing MCM-41 (AlMCM) support. According to X-ray diffraction data, all of the synthesized materials are composite powders consisting of amorphous silicate and an HA phase with low crystallinity. The presence of aluminum and iron in the structure of the powders resulted in further amorphization. The obtained samples showed high specific surface areas (SSAs), ranging from 162.3 to 186.6 m<sup>2</sup>/g for MCM-41-HA and from 112.6 to 127.2 m<sup>2</sup>/g for AlMCM-HA. The hysteresis loops were found to be of type H3, indicating the formation of slit-like pores in the intercrystalline space, as confirmed by transmission electron microscopy, which revealed the presence of lamellar and flake-like particles. Catalytic activity tests showed that the conversion of dibenzothiophene depended on the iron concentration in the material and the acidity of the support. To further improve the catalytic activity of the materials, they were impregnated with molybdenum compounds. Active molybdenum peroxo complexes formed under these conditions enabled 100% conversion of dibenzothiophene. To our knowledge, this is the first study on the influence of MCM-41-HA- or AlMCM-HA-based materials on dibenzothiophene conversion via oxidative desulfurization using hydrogen peroxide as an oxidant. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Ceramics |
| spelling | doaj-art-73833d2d567d46e39b339014db68598a2025-08-20T03:27:15ZengMDPI AGCeramics2571-61312025-05-01826110.3390/ceramics8020061Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model FuelNadezhda O. Donskaya0Margarita A. Goldberg1Alexander S. Fomin2Anna O. Koptelova3Polina D. Domashkina4Ekaterina A. Eseva5Olga S. Antonova6Anatoliy A. Konovalov7Alexander V. Leonov8Egor A. Kudryavtsev9Fadis F. Murzakhanov10Marat R. Gafurov11Argam V. Akopyan12Sergey M. Barinov13Vladimir S. Komlev14Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaDepartment of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, Moscow 119991, RussiaDepartment of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, Moscow 119991, RussiaDepartment of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, Moscow 119991, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaDepartment of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, Moscow 119991, RussiaJoint Research Center of Belgorod State National Research University «Technology and Materials», Belgorod State National Research University, Pobedy Str. 85, Belgorod 308015, RussiaInstitute of Physics, Kazan Federal University, 18 Kremlevskaya Str., Kazan 420008, RussiaInstitute of Physics, Kazan Federal University, 18 Kremlevskaya Str., Kazan 420008, RussiaDepartment of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1, Building 3, Moscow 119991, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskiy Pr. 49, Moscow 119334, RussiaNanopowders of hydroxyapatite (HA) and Fe-substituted hydroxyapatite (HAFe) were synthesized by wet precipitation on either MCM-41 (a synthetic, mesoporous aluminosilicate material) or an aluminum-containing MCM-41 (AlMCM) support. According to X-ray diffraction data, all of the synthesized materials are composite powders consisting of amorphous silicate and an HA phase with low crystallinity. The presence of aluminum and iron in the structure of the powders resulted in further amorphization. The obtained samples showed high specific surface areas (SSAs), ranging from 162.3 to 186.6 m<sup>2</sup>/g for MCM-41-HA and from 112.6 to 127.2 m<sup>2</sup>/g for AlMCM-HA. The hysteresis loops were found to be of type H3, indicating the formation of slit-like pores in the intercrystalline space, as confirmed by transmission electron microscopy, which revealed the presence of lamellar and flake-like particles. Catalytic activity tests showed that the conversion of dibenzothiophene depended on the iron concentration in the material and the acidity of the support. To further improve the catalytic activity of the materials, they were impregnated with molybdenum compounds. Active molybdenum peroxo complexes formed under these conditions enabled 100% conversion of dibenzothiophene. To our knowledge, this is the first study on the influence of MCM-41-HA- or AlMCM-HA-based materials on dibenzothiophene conversion via oxidative desulfurization using hydrogen peroxide as an oxidant.https://www.mdpi.com/2571-6131/8/2/61MCM-41hydroxyapatitesulfur-containing substrategreen oxidationhydrogen peroxidedibenzothiophene |
| spellingShingle | Nadezhda O. Donskaya Margarita A. Goldberg Alexander S. Fomin Anna O. Koptelova Polina D. Domashkina Ekaterina A. Eseva Olga S. Antonova Anatoliy A. Konovalov Alexander V. Leonov Egor A. Kudryavtsev Fadis F. Murzakhanov Marat R. Gafurov Argam V. Akopyan Sergey M. Barinov Vladimir S. Komlev Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel Ceramics MCM-41 hydroxyapatite sulfur-containing substrate green oxidation hydrogen peroxide dibenzothiophene |
| title | Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel |
| title_full | Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel |
| title_fullStr | Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel |
| title_full_unstemmed | Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel |
| title_short | Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel |
| title_sort | novel catalysts based on synthetic mesoporous silicates of the mcm 41 type and hydroxyapatite for desulfurization of model fuel |
| topic | MCM-41 hydroxyapatite sulfur-containing substrate green oxidation hydrogen peroxide dibenzothiophene |
| url | https://www.mdpi.com/2571-6131/8/2/61 |
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