Polystyrene white oil and preparation method thereof

The invention provides polystyrene white oil and a preparation method thereof, and the preparation method comprises the following steps: carrying out white oil hydrogenation reaction on a heavy fraction of hydroisomerized oil under the action of a white oil hydrogenation catalyst to obtain polystyrene white oil, wherein the white oil hydrogenation catalyst comprises an amorphous silicon-aluminum-based carrier and active metals, and the active metals comprise platinum and palladium. According to the present invention, the heavy fraction of the hydroisomerization generated oil compounded by the catalyst having high catalytic activity is subjected to hydrofining to obtain the high-viscosity polystyrene white oil, the high-viscosity polystyrene white oil has excellent oxidation stability and excellent photo-thermal stability, and each index meets the polystyrene white oil standard. 本发明提供了一种聚苯乙烯白油及其制备方法，该制备方法包括如下步骤：将加氢异构化生成油的重质馏分在白油加氢催化剂的作用下进行白油加氢反应，得到聚苯乙烯白油；其中，所述白油加氢催化剂包括无定形硅铝基载体和活性金属，所述活性金属包括铂和钯。本发明采用具有高催化活性的催化剂