中文摘要：

采用浸渍法制备了四氟硼酸（HBF4）改性活性炭，并研究了其对模拟油中二苯并噻吩（DBT）的吸附脱除性能。利用傅里叶红外光谱（FT-IR）、差示热分析仪（TG-DTA）、X射线光电子能谱（XPS）以及N2吸附技术对吸附剂的表面态和孔结构进行了表征，考察了四氟硼酸浓度、热处理温度以及模拟油中DBT浓度对吸附脱硫效果的影响。结果表明，经质量分数0．5％的HBF。溶液浸渍、140oC热处理后，在剂油比l：100条件下，活性炭的吸附容量为352mg／g，较未改性活性炭提高了72．5％。

英文摘要：

The activated carbon adsorbent was modified with tetrafluoroboric acid ( HBF4 ) by impregnation and characterized by Fourier transform infrared spectroscopy ( FT-IR) , X-ray photoelectron spectroscopy ( XPS) and N2 physisorption. The performance of modified activated carbon in adsorption desulfurization of dibenzothiophene ( DBT ) in model diesel fuel was investigated and the influences of HBF4 concentration, calcination temperature and the initial DBT concentration on the sulfur removal efficiency were considered. The results show that the adsorbent modified with 0. 5% HBF4 solution and calcined at 140℃ performs best in DBT desulfurization; when the adsorbent/oil ratio is 1:100, the HBF4-modified adsorbent exhibits an adsorption capacity of 352 mg/g, which is 72. 5% higher than that of the unmodified activated carbon.