FCC汽油模型化合物光催化氧化脱硫的研究

Oxidation Desulfurization from Fluid Catalytic Cracking Gasoline via Photocatalysis

以噻吩的二甲苯溶液作为FCC汽油的模型化合物,双氧水为氧化剂,研究了在光催化作用下,双氧水体积分数、高速均质时间和二氧化钛的加入量等工艺条件对脱硫率的影响,在适宜条件下,模型化合物的脱硫率可达到80%以上.以FCC汽油为实际体系,在适宜的光催化条件下,脱硫率可达到59%.分析结果表明,含硫化合物的氧化产物为更高极性的物质.

Oxidation desulfufization via photocatalysis was investigated by using thiophene in xylol as the model compound, and hydrogen peroxide is used as the oxidant. The effects of hydrogen peroxide mass fraction, high shear agitation time, titanium dioxide mass on the desulfurization efficiency of FCC gasoline were also investigated. Under suitable conditions, the desulfurization rate of the model compound and of FCC gasoline can reach 80% and 59%, respectively. The conductivity and GC-FPD analyses show that the sulfur-containing compounds are converted into the substance with a higher polarity.