A Study of the Mn, Co and Ni Environment in the As-synthesized and Rehydrated-calcined Aluminophosphate with Chabazite-like Topology
Апстракт
Diffuse-reflectance spectroscopy (DRS), X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) methods are applied to an investigation of Mn, Co and Ni local environments in MnAlPO, CoAlPO, and NiAlPO materials with chabazite-like topology. For all three products, insertion of the transition metals into tetrahedral Al-sites has been found. Calcination and rehydration of the as-synthesised materials cause a change of the oxidation number and co-ordination geometry of Mn and Co, while the oxidation and co-ordination number of Ni remain unaffected.
Кључне речи:
aluminophosphates / molecular sieves / MAPO-34 / chabazite-like / EXAFS, XANES / diffuse reflectance spectroscopyИзвор:
Croatica Chemica Acta, 1999, 72, 2-3, 645-661Издавач:
- Croatian Chemical Society
Финансирање / пројекти:
- Ministry of Science and Technology of the Republic of Slovenia
- International Buro Julich (Germany)
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Rajić, Nevenka AU - Arčin, Iztok AU - Kaučič, Venčeslav AU - Kodre, Alojz PY - 1999 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6399 AB - Diffuse-reflectance spectroscopy (DRS), X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) methods are applied to an investigation of Mn, Co and Ni local environments in MnAlPO, CoAlPO, and NiAlPO materials with chabazite-like topology. For all three products, insertion of the transition metals into tetrahedral Al-sites has been found. Calcination and rehydration of the as-synthesised materials cause a change of the oxidation number and co-ordination geometry of Mn and Co, while the oxidation and co-ordination number of Ni remain unaffected. PB - Croatian Chemical Society T2 - Croatica Chemica Acta T1 - A Study of the Mn, Co and Ni Environment in the As-synthesized and Rehydrated-calcined Aluminophosphate with Chabazite-like Topology EP - 661 IS - 2-3 SP - 645 VL - 72 UR - https://hdl.handle.net/21.15107/rcub_technorep_6399 ER -
@article{ author = "Rajić, Nevenka and Arčin, Iztok and Kaučič, Venčeslav and Kodre, Alojz", year = "1999", abstract = "Diffuse-reflectance spectroscopy (DRS), X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) methods are applied to an investigation of Mn, Co and Ni local environments in MnAlPO, CoAlPO, and NiAlPO materials with chabazite-like topology. For all three products, insertion of the transition metals into tetrahedral Al-sites has been found. Calcination and rehydration of the as-synthesised materials cause a change of the oxidation number and co-ordination geometry of Mn and Co, while the oxidation and co-ordination number of Ni remain unaffected.", publisher = "Croatian Chemical Society", journal = "Croatica Chemica Acta", title = "A Study of the Mn, Co and Ni Environment in the As-synthesized and Rehydrated-calcined Aluminophosphate with Chabazite-like Topology", pages = "661-645", number = "2-3", volume = "72", url = "https://hdl.handle.net/21.15107/rcub_technorep_6399" }
Rajić, N., Arčin, I., Kaučič, V.,& Kodre, A.. (1999). A Study of the Mn, Co and Ni Environment in the As-synthesized and Rehydrated-calcined Aluminophosphate with Chabazite-like Topology. in Croatica Chemica Acta Croatian Chemical Society., 72(2-3), 645-661. https://hdl.handle.net/21.15107/rcub_technorep_6399
Rajić N, Arčin I, Kaučič V, Kodre A. A Study of the Mn, Co and Ni Environment in the As-synthesized and Rehydrated-calcined Aluminophosphate with Chabazite-like Topology. in Croatica Chemica Acta. 1999;72(2-3):645-661. https://hdl.handle.net/21.15107/rcub_technorep_6399 .
Rajić, Nevenka, Arčin, Iztok, Kaučič, Venčeslav, Kodre, Alojz, "A Study of the Mn, Co and Ni Environment in the As-synthesized and Rehydrated-calcined Aluminophosphate with Chabazite-like Topology" in Croatica Chemica Acta, 72, no. 2-3 (1999):645-661, https://hdl.handle.net/21.15107/rcub_technorep_6399 .