Molybdenum (VI)‐functionalized UiO‐66 provides an efficient heterogeneous nanocatalyst in oxidation reactions. (4th September 2019)

• Record Type: Journal Article
• Authors: Afzali, Niloufar; Kardanpour, Reihaneh; Zadehahmadi, Farnaz; Tangestaninejad, Shahram; Moghadam, Majid; Mirkhani, Valiollah; Mechler, Adam; Mohammadpoor‐Baltork, Iraj; Bahadori, Mehrnaz
• Is Part Of: Applied organometallic chemistry. Volume 33:Number 11(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-04
• Subjects: Dibenzothiophene -- heterogeneous catalyst -- metal–organic frameworks -- oxidation reaction -- UiO‐66; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.5225
• Languages: English
• ISSNs: 0268-2605

Abstract

Abstract : A novel heterogeneous nanocatalyst was established by supporting molybdenum (VI) on Zr6 nodes in the structure of the well‐known UiO‐66 metal–organic framework (MOF). The structure of the UiO‐66 before and after Mo (VI) immobilization was confirmed with XRD, DR‐FTIR and UV–vis spectroscopy, and the presence and amount of Mo (VI) was identified by X‐ray photoelectron spectroscopy and inductively coupled plasma atomic emission spectroscopy. TEM imaging confirmed the absence of Mo clusters on the MOF surface, while SEM confirmed that the appearance of the MOF has not changed upon immobilizing the Mo (VI) catalyst. BET adsorption measurements were used to confirm the porosity of the catalyst. The catalytic activity of this heterogeneous catalyst was investigated in oxidation of sulfides with H2 O2 in acetonitrile and oxidative desulfurization of dibenzothiophene. Easy work up, convenient and steady reuse and high activity and selectivity are prominent properties of this new hybrid material. Abstract : A novel heterogeneous catalyst was synthesized by supporting molybdenum (VI) on Zr6 nodes in the structure of the UiO‐66 metal‐organic framework (MOF). In this way, the corner hydroxyl groups of the UiO‐66 framework were used as a grafting site to form a robust MoUiO‐66 catalyst. The superior properties of this new catalytic system were demonstrated in the oxidation of sulfides with H2 O2 and oxidative desulfurization of dibenzothiophene. This heterogeneous catalyst is highly efficient, stable and reusable.