Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide
In this work, a series of polyoxometalates (POMs), as soluble salts of formula Sn1.5PMo12O40, SbPMo12O40 and $\mathrm{H}_{3-x}\mathrm{Sn}_{x1}\mathrm{Sb}_{x2}\mathrm{PMo}_{12} \mathrm{O}_{40}$ ($x=2x_{1}+3x_{2}$ and $x_{1}$, $x_{2}=$ 0–0.75) were synthesized using the cationic exchange method under...
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Académie des sciences
2022-09-01
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| Series: | Comptes Rendus. Chimie |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.195/ |
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| author | Maiouf, Fatma-Zohra Boumechhour, Abdenour Benadji, Siham Dermeche, Leila Mazari, Tassadit Lancelot, Christine Rabia, Chérifa |
| author_facet | Maiouf, Fatma-Zohra Boumechhour, Abdenour Benadji, Siham Dermeche, Leila Mazari, Tassadit Lancelot, Christine Rabia, Chérifa |
| author_sort | Maiouf, Fatma-Zohra |
| collection | DOAJ |
| description | In this work, a series of polyoxometalates (POMs), as soluble salts of formula Sn1.5PMo12O40, SbPMo12O40 and $\mathrm{H}_{3-x}\mathrm{Sn}_{x1}\mathrm{Sb}_{x2}\mathrm{PMo}_{12} \mathrm{O}_{40}$ ($x=2x_{1}+3x_{2}$ and $x_{1}$, $x_{2}=$ 0–0.75) were synthesized using the cationic exchange method under stoichiometric conditions. They were characterized and tested in the oxidation of cyclohexanone using hydrogen peroxide in the absence of organic solvent, co-catalyst phase transfer compounds or surfactants. UV–Visible and X-ray photoelectron spectroscopic analyses showed a partially reduced state of POM with coexistence of the couples Mo(VI)/Mo(V), Sb(V)/Sb(III) and Sn(IV)/Sn(II), without affecting their structure, results confirmed by FT-IR and Raman spectroscopies. The reversible cyclic voltammetry analysis evidenced the valence change of the Mo species, Mo(VI)/Mo(V). The POMs are found to be active in the cyclohexanone oxidation reaction and among them the most efficient is $\mathrm{H}_{0.75}\mathrm{Sb}_{0.75}\mathrm{PMo}_{12}\mathrm{O}_{40}$ with 49% of adipic acid yield. |
| format | Article |
| id | doaj-art-ef42ff0727a842c9bba0ae8092959f4b |
| institution | Kabale University |
| issn | 1878-1543 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Chimie |
| spelling | doaj-art-ef42ff0727a842c9bba0ae8092959f4b2025-02-07T13:31:13ZengAcadémie des sciencesComptes Rendus. Chimie1878-15432022-09-0125G125326610.5802/crchim.19510.5802/crchim.195Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxideMaiouf, Fatma-Zohra0https://orcid.org/0000-0003-2979-3756Boumechhour, Abdenour1https://orcid.org/0000-0002-8531-3027Benadji, Siham2Dermeche, Leila3Mazari, Tassadit4Lancelot, Christine5Rabia, Chérifa6Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32, El-Alia, 16111 Bab-Ezzouar, Alger, AlgeriaLaboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32, El-Alia, 16111 Bab-Ezzouar, Alger, Algeria; Centre de Recherche en Analyses Physico-chimiques (CRAPC), BP 384 RP 42004 Bou-Ismail, Tipaza, AlgeriaLaboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32, El-Alia, 16111 Bab-Ezzouar, Alger, AlgeriaLaboratoire de Chimie Appliquée et de Génie Chimique, Université Mouloud-Mammeri (UMMTO), BP 17 RP 15000 Tizi-Ouzou, AlgeriaLaboratoire de Chimie Appliquée et de Génie Chimique, Université Mouloud-Mammeri (UMMTO), BP 17 RP 15000 Tizi-Ouzou, AlgeriaUnité de catalyse et chimie du solide, UMR 8181 Université de Lille Cité Scientifique, Bâtiment C359650 Villeneuve d’Ascq Cedex, FranceLaboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32, El-Alia, 16111 Bab-Ezzouar, Alger, AlgeriaIn this work, a series of polyoxometalates (POMs), as soluble salts of formula Sn1.5PMo12O40, SbPMo12O40 and $\mathrm{H}_{3-x}\mathrm{Sn}_{x1}\mathrm{Sb}_{x2}\mathrm{PMo}_{12} \mathrm{O}_{40}$ ($x=2x_{1}+3x_{2}$ and $x_{1}$, $x_{2}=$ 0–0.75) were synthesized using the cationic exchange method under stoichiometric conditions. They were characterized and tested in the oxidation of cyclohexanone using hydrogen peroxide in the absence of organic solvent, co-catalyst phase transfer compounds or surfactants. UV–Visible and X-ray photoelectron spectroscopic analyses showed a partially reduced state of POM with coexistence of the couples Mo(VI)/Mo(V), Sb(V)/Sb(III) and Sn(IV)/Sn(II), without affecting their structure, results confirmed by FT-IR and Raman spectroscopies. The reversible cyclic voltammetry analysis evidenced the valence change of the Mo species, Mo(VI)/Mo(V). The POMs are found to be active in the cyclohexanone oxidation reaction and among them the most efficient is $\mathrm{H}_{0.75}\mathrm{Sb}_{0.75}\mathrm{PMo}_{12}\mathrm{O}_{40}$ with 49% of adipic acid yield.https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.195/PolyoxometalatesMixed-valence saltsCyclohexanoneOxidationAdipic acid |
| spellingShingle | Maiouf, Fatma-Zohra Boumechhour, Abdenour Benadji, Siham Dermeche, Leila Mazari, Tassadit Lancelot, Christine Rabia, Chérifa Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide Comptes Rendus. Chimie Polyoxometalates Mixed-valence salts Cyclohexanone Oxidation Adipic acid |
| title | Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide |
| title_full | Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide |
| title_fullStr | Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide |
| title_full_unstemmed | Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide |
| title_short | Preparation, characterization of mixed-valence antimony-tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide |
| title_sort | preparation characterization of mixed valence antimony tin phosphomolybdic polyoxometalates and application in the cyclohexanone oxidation in the presence of hydrogen peroxide |
| topic | Polyoxometalates Mixed-valence salts Cyclohexanone Oxidation Adipic acid |
| url | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.195/ |
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