CAJ | 학술논문

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HBF4溶液浸渍、140℃热处理后,在剂油比1：100条件下,活性炭的吸附容量为352 mg/g,较未改性活性炭提高了72.5%。
채용침지법제비료사불붕산( HBF4)개성활성탄,병연구료기대모의유중이분병새분( DBT)적흡부탈제성능。이용부리협홍외광보( FT-IR)、차시열분석의( TG-DTA)、X사선광전자능보( XPS)이급N2흡부기술대흡부제적표면태화공결구진행료표정,고찰료사불붕산농도、열처리온도이급모의유중DBT농도대흡부탈류효과적영향。결과표명,경질량분수0.5%적HBF4용액침지、140℃열처리후,재제유비1：100조건하,활성탄적흡부용량위352 mg/g,교미개성활성탄제고료72.5%。
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.