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超声协同TiO_2光催化脱除燃料油中有机硫的研究
引用本文:陈宋璇,赵景联,苏慈.超声协同TiO_2光催化脱除燃料油中有机硫的研究[J].燃料化学学报,2010,38(4):428-433.
作者姓名:陈宋璇  赵景联  苏慈
作者单位:Department of Environmental Engineering, ,State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
基金项目:西安交通大学"985工程"二期能源环境污染机理及污染防治技术子平台建设项目 
摘    要:采用溶胶凝胶法制备纳米TiO2光催化剂,引入超声作用,以空气中的氧气为氧化剂,正辛烷为模拟油品对燃料油中硫化物的脱除进行了研究。考察了光照强度、催化剂用量、反应时间、二苯并噻吩(DBT)初始浓度、超声功率等因素对TiO2光催化二苯并噻吩溶液降解效率的影响。结果表明,引入超声后DBT的降解率提高了10%左右,并在TiO2用量为2 g/L,通气量为800 mL/min,光照距离20 cm,DBT初始浓度为600 mg/L,反应时间为150 min,超声功率为500 W的条件下,DBT降解率达到了72.6%。

关 键 词:光催化氧化  TiO2  二苯并噻吩  脱硫  超声  
收稿时间:2009-10-19

Photocatalytic desulfurization of gasoline by TiO2 coupling with ultrasonic
CHEN Song-xuan,ZHAO Jing-lian,SU Ci.Photocatalytic desulfurization of gasoline by TiO2 coupling with ultrasonic[J].Journal of Fuel Chemistry and Technology,2010,38(4):428-433.
Authors:CHEN Song-xuan  ZHAO Jing-lian  SU Ci
Abstract:The photocatalytic oxidation of dibenzothiophen (DBT) in octance (as solvent) was conducted using O2 in air as the oxidant, TiO2 prepared by sol-gelatin method as the photocatalyst and coupling with ultrasonic. The effect of light distance, photocatalyst amount, reaction time, DBT initial concentration and ultasonic power on the removal of DBT were investigated deeply. The results show that the degradation rate of DBT increases by 10% by using ultrasonic. Under the conditions of TiO2 dosage of 2g/L, air flow rate of 800mL/min, distance of UV light of 20cm, initial concentration of DBT of 600mg/L, reaction time of 150min, ultrasound power of 500W, the degradation rate of DBT can reach up to 72.6%.
Keywords:TiO2
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