Publication Date:
2019
Description:
〈p〉Publication date: Available online 26 September 2019〈/p〉
〈p〉〈b〉Source:〈/b〉 Catalysis Today〈/p〉
〈p〉Author(s): Davide Ottaviani, Vanmira Van-Dúnem, Ana P. Carvalho, Angela Martins, Luísa M.D.R.S. Martins〈/p〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉The hydrotris(3,5-dimethylpyrazol-1-yl)borate dioxido-vanadium(V) complex [VO〈sub〉2〈/sub〉{HB(3,5-Me〈sub〉2〈/sub〉pz)〈sub〉3〈/sub〉}] (〈strong〉V〈/strong〉, pz = pyrazol-1-yl) immobilized at hierarchical MOR zeolite modified through surfactant mediated technology using NaOH as alkaline agent, 〈strong〉V〈/strong〉@MOR_NaOH, provides an efficient (TON up to 5.2 × 10〈sup〉2〈/sup〉) catalyst for the peroxidative oxidation of cyclohexane with 〈em〉tert〈/em〉-butyl hydroperoxide to KA oil (52% yield), at room temperature, and is easily recovered and reused up to four consecutive catalytic cycles with no significant leaching of vanadium. The textural modifications performed on the zeolitic matrix produced an effective support for the anchorage of the vanadium complex allowing an improved catalytic performance and reusability. This work constitutes an unprecedented use of supported vanadium B-scorpionate complexes as catalysts for the oxidation of alkanes.〈/p〉〈/div〉
〈h5〉Graphical Abstract〈/h5〉
〈div〉〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S0920586119305310-ga1.jpg" width="301" alt="Graphical abstract for this article" title=""〉〈/figure〉〈/p〉〈/div〉
Print ISSN:
0920-5861
Electronic ISSN:
1873-4308
Topics:
Chemistry and Pharmacology
,
Physics
