V-Mo-P oxide catalyst system was directly prepared from ll-molybdo-l-vanado phosphoric acid by thermal decomposition. Supported V-Mo-P oxide catalysts were prepared by wet impregnation method. Catalysts were character...V-Mo-P oxide catalyst system was directly prepared from ll-molybdo-l-vanado phosphoric acid by thermal decomposition. Supported V-Mo-P oxide catalysts were prepared by wet impregnation method. Catalysts were characterized by FTIR (Fourier transform infrared), XRD (X-ray diffraction) and TPD (temperature programmed desorption). The catalytic activity of V-Mo-P oxide catalysts were investigated for vapour phase ammoxidation of 3-picoline. The unsupported catalyst showed 92.1% yield where as V-Mo-P oxide/HZSM-5 showed the highest yield (80.4%) amongst the supported catalysts.展开更多
Both cubane-like clusters MoFe_3S_4 (Me_2dtc)_5·2CH_2Cl_2 (1) and MoFe_3S_4(C_4H_8dtc)_5·2EtCN (2) were used to study the temperature-dependent behavior of the molar magnetic susceptibility. A spin coupling ...Both cubane-like clusters MoFe_3S_4 (Me_2dtc)_5·2CH_2Cl_2 (1) and MoFe_3S_4(C_4H_8dtc)_5·2EtCN (2) were used to study the temperature-dependent behavior of the molar magnetic susceptibility. A spin coupling model was suggested and the fitting results agree with the model and structural and spectroscopic parameters.展开更多
文摘V-Mo-P oxide catalyst system was directly prepared from ll-molybdo-l-vanado phosphoric acid by thermal decomposition. Supported V-Mo-P oxide catalysts were prepared by wet impregnation method. Catalysts were characterized by FTIR (Fourier transform infrared), XRD (X-ray diffraction) and TPD (temperature programmed desorption). The catalytic activity of V-Mo-P oxide catalysts were investigated for vapour phase ammoxidation of 3-picoline. The unsupported catalyst showed 92.1% yield where as V-Mo-P oxide/HZSM-5 showed the highest yield (80.4%) amongst the supported catalysts.
文摘Both cubane-like clusters MoFe_3S_4 (Me_2dtc)_5·2CH_2Cl_2 (1) and MoFe_3S_4(C_4H_8dtc)_5·2EtCN (2) were used to study the temperature-dependent behavior of the molar magnetic susceptibility. A spin coupling model was suggested and the fitting results agree with the model and structural and spectroscopic parameters.