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Manganese-modified hexagonal mesoporous aluminophosphate MnHMA : synthesis and characterizationZabukovec Logar, Nataša ...Manganese-modified hexagonal mesoporous aluminophosphate (MnHMA) was synthesized hydrothermally in a microwave oven in the presence of cetyltrimethylammonium chloride (CTACl) as a template. The ... mesoporous structure was elucidated by HRTEM. Local environment of aluminum and phosphorus forming the mesoporous aluminophosphate framework was studied by MAS NMR. The local environment of manganese incorporated in HMA was investigated by X-ray absorption spectroscopy. XANES studies show that manganese in the as-synthesized and template-free MnHMA is present in the form of Mn2+ and Mn3+ ions in the ratio 40-60%. EXAFS analyses revealed four oxygens in the first coordination sphere of manganese in the as-synthesized and template-free MnHMA at the distances 2.142(5) A and 2.15(1) A, respectively. EPR and ESEEM measurements revealed that Mn2+ in both as-synthesized and template-free products was located within the mesoporous aluminophosphate framework.Vir: Microporous and mesoporous materials : zeolites, clays, carbons and related materials. - ISSN 1387-1811 (Vol. 96, no. 1/3, 2006, str. 386-395)Vrsta gradiva - članek, sestavni delLeto - 2006Jezik - angleškiCOBISS.SI-ID - 3616538
Avtor
Zabukovec Logar, Nataša |
Novak Tušar, Nataša |
Mali, Gregor, 1971-2023 |
Mazaj, Matjaž |
Arčon, Iztok |
Arčon, Denis |
Rečnik, Aleksander |
Ristić, Alenka |
Kaučič, Venčeslav
Teme
materials chemistry |
mesoporous |
aluminophosphate |
Mn |
hydrothermal microwave synthesis |
EXAFS |
XANES |
NMR |
EPR |
kemija materialov |
mezoporozni materiali |
aluminofosfati |
mangan |
hidrotermična mikrovalovna sinteza
Vnos na polico
Trajna povezava
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Zabukovec Logar, Nataša | 14120 |
Novak Tušar, Nataša | 13399 |
Mali, Gregor, 1971-2023 | 18146 |
Mazaj, Matjaž | 25023 |
Arčon, Iztok | 08387 |
Arčon, Denis | 14080 |
Rečnik, Aleksander | 10083 |
Ristić, Alenka | 15790 |
Kaučič, Venčeslav | 03373 |
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