WO3-Bi2MoO6@GO复合催化剂的制备及 催化氧化脱硫性能

Construction of WO3-Bi2MoO6@GO composite catalyst and its catalytic oxidation desulfurization performance

摘要:

通过水热-退火法制备了氧化石墨烯负载钨酸/钼酸铋的复合催化剂（WO3-Bi2MoO6@GO），采用电子X-射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描显微图像(SEM)、和N2等温吸附-脱附等分析方法对它们的结构组成、表面形貌和比表面积进行了表征。在不同反应温度、光源、催化剂用量、萃取剂用量、氧硫比等条件下测试了WO3-Bi2MoO6@GO对模拟油的脱硫性能。结果表明，在反应温度为40℃、15A氙灯照射、催化剂为0.02g、乙腈为5mL、H2O2为0.12mL、反应时间75min时，对硫含量为200和500mg/L的模拟油脱硫率达99.0%以上。

Abstract:

The composite catalysts of graphene oxide supported tungstate and bismuth molybdate (WO3-Bi2MoO6@GO) were prepared by hydrothermal-annealing method. The structure, surface morphology and specific surface area of the as-prepared catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), electron scanning microscopy (SEM) and N2 isothermal adsorption and desorption. The simulated oil desulfurization performance of the WO3-Bi2MoO6@GO was tested under different reaction temperature, light source, catalyst dosage, extractant dosage, oxygen to sulfur ratio, and other conditions. The results showed that the desulfurization rate of 200 and 500mg/L simulated oil reached 99.0% with reaction temperature of 40℃, the catalyst dose of 0.02g, the volume of acetonitrile of 5mL, the volume of H2O2 of 0.12mL and the reaction time of 75min.