CAJ | 학술논문

采用溶胶-凝胶法制备了W改性SiO2催化剂,并通过X射线衍射（XRD）、红外光谱（FTIR）、N2吸附（BET）、扫描电镜（SEM）等方法对催化剂进行表征。以苯并噻吩（BT）/石油醚模拟油为原料、H2O2为氧化剂,研究了催化剂催化氧化脱硫性能,考察了溶剂及用量、反应温度、氧化剂用量、催化剂用量、反应时间对苯并噻吩脱硫率的影响。结果表明,催化剂中W以WO3晶相存在,引入W后催化剂的比表面积有所降低。在模拟油原料20 mL、催化剂用量0.04 g、H2O2/S摩尔比8、乙腈/模拟油体积比0.3∶1、65℃下反应60 min时,模拟油脱硫率可达99.6%。
채용용효-응효법제비료W개성SiO2최화제,병통과X사선연사（XRD）、홍외광보（FTIR）、N2흡부（BET）、소묘전경（SEM）등방법대최화제진행표정。이분병새분（BT）/석유미모의유위원료、H2O2위양화제,연구료최화제최화양화탈류성능,고찰료용제급용량、반응온도、양화제용량、최화제용량、반응시간대분병새분탈류솔적영향。결과표명,최화제중W이WO3정상존재,인입W후최화제적비표면적유소강저。재모의유원료20 mL、최화제용량0.04 g、H2O2/S마이비8、을정/모의유체적비0.3∶1、65℃하반응60 min시,모의유탈류솔가체99.6%。
The W-modified SiO2 catalyst was prepared by sol-gel method and characterized by X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FT-IR）,N2-adsorption specific surface area measurement（BET）and scanning electron microscopy（SEM）.The catalytic oxidative desulfurization performance was studied with the simulated oil of benzothiophene（BT）sulfur as feedstock,H2O2 as oxidant.The effects of solvent,solvent dosage,reaction temperature,H2O2 dosage,catalyst dosage and reaction time on desulfurization performance of BT were investigated.The results show that the predominant phase of W in catalyst was WO3,the introduction of W led to the reduction of the specific surface area of catalyst.Under the condition of simulated oil sample 20mL,catalyst 0.04 g,H2O2 /S molar ratio of 8,acetonitrile/simulated oil volume ratio of 0.3∶1,at 65 ℃,reaction time of 60 min,the desulfurization ratio of simulated oil reach to 99.6%.