Synthesis, characterization and crystal structure of a copper molybdate coordination polymer as an epoxidation catalyst

Preparation of MoO3/CuMoO4 nanoparticles as selective catalyst for olefin epoxidation

“…Based on Figure 3, it can be seen that the catalytic reaction can give better epoxidation conversions in the presence of TBHP in comparison with CHP due to more electrophilic nature of the peroxidic oxygen in TBHP. These observations that are well matched with the previous reports [27,35] indicate that the use of TBHP as oxidant and non-coordinating solvents, such as chloroform or dichloromethane, results in more reactivity of MoO 3 /CuMoO 4 NPs. Therefore, the epoxidation reaction for the other substrates was accomplished in CHCl 3 using TBHP.…”

“…The results for the catalytic epoxidation of the selected ole ns and allylic alcohols indicate high activity of the catalyst ( Table 1). The MoO 3 /CuMoO 4 nanocatalyst and its previously reported coordination polymer precursorsexhibit good catalytic activity [35]. As displayed in Figure 4, 3-methyl-2-butene-1-ol has rapidly undergone the epoxidation reaction utilizing MoO 3 /CuMoO 4 NPs within 30 min, and then is mostly oxidized after 4 h. To elucidate the catalytic e ciency of the prepared MoO 3 /CuMoO 4 nanomaterial, the reaction was accomplished without the catalyst using TBHP as oxidant and CHCl 3 as solvent, and low conversion (28%) was obtained after 2 h.…”

Sonochemical Synthesis of a Nanosized Coordination Polymer with Catalytic Activity for Selective Epoxidation of Olefins

“…Coordination polymers have been designed using organic ligands and catalytically active inorganic ions, such as molybdenum (VI), and applied as heterogeneous catalysts with no need of immobilization on solid supports or post‐synthetic modifications . In this regard, we reported coordination polymers based on oxomolybdenum as well as polyoxomolybdate as heterogeneous epoxidation catalysts …”

“…Moreover, cyclic olefins such as cyclooctene and cyclohexene with inner double bonds exhibit more epoxidation reactivity compared to 1‐hexene and 1‐octene with lower electron density in their terminal double bond. These results are in agreement with the previous reports …”

Facile preparation and characterization of copper molybdate nanostructures for photocatalysis via novel microwave combustion technique

“…At atmospheric pressure Cu 3 Mo 2 O 9 shows two polymorphs, 1) stable α structure with molybdenum situated in a tetrahedral domain and 2) metastable γ structure with molybdenum situated in an octahedral situation. The oxide shows up a genuine buzzer of various significant properties: thermochromic, trisochromic, tribochromic, piezochromic and photoelectrochemical properties, subsequently display phase transition related to the shading variation from green to dark coloured [6], [7]. The first order transition was progressed by solid difference in volume and anisotropic splitting of grains, happens as indicated by dominocascade kinetics.…”