Synthesis and oxidative desulfurization of cobalt phthalocyanine functionalized vanadium substituted polyoxometalate catalysts
Vanadium-substituted Keggin-type polyoxometalate [PMo12-xVx][PMoV,x=1～10]reacted with Dibinudeatephthalocyanine cobalt sulfonic acid ammonium sulphate [C116H80O32N42S11Co4 (Co-Pc),cobalt phthalocyanine]to obtain a composite catalyst PMo12-xVx/Co-Pc.The effects of different number of vanadium substituted polyoxometalates and their combination with cobalt phthalocyanine at different molar ratios on desulfurization performance of model oil were systematically studied by direct air oxidation method.The composite catalyst PMo3V9/Co-Pc obtained from PMo3V9 and Co-Pc at the molar ratio of 7:1 was used as the representative to characterize the catalyst by FT-IR,XRD and N2 Adsorption/Desorption.Meanwhile various factors affecting the desulfurization efficiency of the catalyst,the stability of the catalyst and the reaction mechanism of oxidative desulfurization were also discussed.The results indicated that PMo3V9/Co-Pc has high catalytic activity,stability and reusability.It is a good catalyst for deep desulfurization by direct air oxidation method.
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维普
