Szczegóły publikacji
Opis bibliograficzny
Incorporation of Mo into the vacant T-atom sites of the framework of BEA zeolite as mononuclear Mo evidenced by XRD and FTIR, NMR, EPR, and DR UV-Vis spectroscopies / Rafał BARAN, Frederic Averseng, Yannick Millot, Thomas Onfroy, Sandra Casale, Stanisław Dzwigaj // Journal of Physical Chemistry . C ; ISSN 1932-7447. — 2014 — vol. 118 iss. 8, s. 4143–4150. — Bibliogr. s. 4149–4150, Abstr. — R. Baran – dod. afiliacje: Sorbonne Universités ; CNRS
Autorzy (6)
- AGHBaran Rafał
- Averseng Frederic
- Millot Yannick
- Onfroy Thomas
- Casale Sandra
- Dźwigaj Stanisław
Dane bibliometryczne
| ID BaDAP | 80470 |
|---|---|
| Data dodania do BaDAP | 2014-03-10 |
| DOI | 10.1021/jp410016g |
| Rok publikacji | 2014 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Physical Chemistry, C |
Abstract
A MoSiBEA zeolite has been prepared by a two-step postsynthesis procedure that consists of first creating the vacant T-atom sites with associated silanol groups by treatment of TEABEA zeolite with nitric acid and then incorporating Mo ions into the vacant T-atom sites by solid-state ion exchange at 773 K using molybdenum(II) acetate. The incorporation of Mo ions into the vacant T-atom sites of the framework of SiBEA zeolite as isolated mononuclear Mo(VI) species was evidenced by the combined use of XRD and FTIR, NMR, and diffuse reflectance UV-visible spectroscopies. The consumption of OH groups was monitored by FTIR spectroscopy. The reducibility of Mo was investigated by TPR and EPR spectroscopy. The size of very small well-dispersed Mo(0) nanoparticles formed upon treatment of MoSiBEA between 298 and 1240 K in hydrogen stream (5% H-2/Ar) was measured by TEM.
