三种环状石油烃光化学降解规律的研究

研究石油中3种常见组分四氢萘、 乙苯和十氢萘在人工光源以及太阳光照射下光化学降解的可行性. 结果表明, 在波长小于290 nm的紫外光照射下, 四氢萘、 乙苯和十氢萘均可以发生直接光解; 而在ZnO, TiO₂以及Fenton试 剂存在的条件下, 上述物质可在波长大于290 nm的光的作用下发生间接光解.

The Photodegradation of Three Cyclic Hydrocarbons in Petroleum

The photodegradation of the three cyclic hydrocarbons in petroleum, ethyl benzene, tetrohydronaphthalene and decahydronaphthalene was studied. A high pressure mercury lamp and the sunlight were respectively used as the light sources. The results of the experiments showed that the three components all could be photodegraded under the high pressure mercury lamp, but not under the sunlight. When there is Fenton reagent (Fe 2 H 2O 2) or particles of TiO 2 or ZnO in the reaction system, the three cyclic hydrocarbons could all be degraded under either the high pressure mercury lamp or the sunlight. The sequence of the rates of the photodegradation was tetrohydronaphthalene>decahydronaphthalene>ethyl benzene. The optium photodegradation conditions were selected.