Synthesis, crystal structure and catalytic activity of a Waugh type polyoxometalate H12[MnMo9O32(KO)6]

Abstract

A Waugh type polyoxometalate H₁₂[Mn-Mo₉O₃₂(KO)₆] has been synthesized and characterized by single crystal X-ray diffraction, IR, XRD and TG. The compound was crystallized in the trigonal system, space group R3 with a = 15.5380(6) nm, b = 15.5380(6) nm, c = 12.3777(5) nm, α = 90°, β = 90°, γ = 120°, V = 2587.98(18) nm³, Z = 3, R₁ = 0.0134, ωR₂ = 0.0308. The catalytic activity of the title compound for the dehydration of cyclohexanol was determined. The conversion of C₆H₁₁OH reached 69.56% and the selectivity of C₆H₁₀ was 96% when the amount of catalyst, temperature range and reaction time were 6.59%, 170°C?180°C, 30 min, respectively.