Simple Hybrids Based on Mo or W Oxides and Diamines: Structure Determination and Catalytic Properties

authors	Bozek, B; Neves, P; Oszajca, M; Valente, AA; Poltowicz, J; Pamin, K; Lasocha, W
nationality	International
journal	CATALYSIS LETTERS
author keywords	Hydrocarbons oxidation and epoxidation; Hybrid materials; Crystal structure determination; X-ray powder diffraction
keywords	OLEFIN EPOXIDATION; TUNGSTEN COMPLEXES; TETRACARBONYL COMPLEXES; HYDROTHERMAL SYNTHESIS; CRYSTAL-STRUCTURES; MOLYBDENUM; OXIDATION; PERFORMANCE; BEHAVIOR; ELUCIDATION
abstract	Crystalline hybrid catalysts based on molybdenum or tungsten oxide and aliphatic diamines were synthesized via simple, eco-friendly reproducible methodologies, starting from commercially available and relatively inexpensive organic and inorganic precursors, and using water as solvent under mild conditions. The crystal structures of the obtained fine powdered solids were solved ab initio from powder X-ray diffraction data. The type of organic component (1,2-diaminoethane, 1,2-diaminopropane, 1,3-diaminopropane) may play a structure-directing role. On the other hand, different metals (M = Mo, W) may lead to isostructural one-dimensional hybrids of the type MO3(L) with the same bidentate diamine ligand L. The prepared catalysts were investigated for the liquid phase oxidation of saturated and unsaturated hydrocarbons (cis-cyclooctene, cyclooctane), using different types of oxidants (O-2, H2O2, tert-butyl hydroperoxide). Differences in catalytic performances associated with distinct structural features were investigated. Graphic
publisher	SPRINGER
issn	1011-372X
isbn	1572-879X
year published	2020
volume	150
issue	3
beginning page	713
ending page	727
digital object identifier (doi)	10.1007/s10562-019-02935-z
web of science category	Chemistry, Physical
subject category	Chemistry
unique article identifier	WOS:000513263600011