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论文摘要

WO3/ZrO2固体超强酸催化氧化柴油深度脱硫研究

Study on the Catalytic Oxidative Deep Desulfurization of Diesel with WO3/ZrO2 Solid Superacid

作者:张存(扬州大学 化学化工学院);王洪娟(扬州大学 化学化工学院);刘涛(扬州大学 化学化工学院);刘晓勤(南京工业大学 化学化工学院)

Author:Zhang Cun(College of Chemistry and Chemical Eng.,Yangzhou Univ.);Wang Hongjuan(College of Chemistry and Chemical Eng.,Yangzhou Univ.);Liu Tao(College of Chemistry and Chemical Eng.,Yangzhou Univ.);Liu Xiaoqing(College of Chem. and Chemical Eng.,Nanjing Univ. of Technol.)

收稿日期:2010-05-05          年卷(期)页码:2011,43(3):176-181

期刊名称:工程科学与技术

Journal Name:Advanced Engineering Sciences

关键字:柴油;氧化脱硫;固体超强酸;萃取;超声

Key words:diesel;oxidative desulfurization;solid superacid;extraction;ultrasound

基金项目:国家自然科学基金资助项目(20806064)

中文摘要

采用WO3/ZrO2固体超强酸作为催化剂,研究了H2O2/WO3/ZrO2体系催化氧化柴油深度脱硫性能,考察了氧化剂用量、催化剂用量、反应温度、反应时间等工艺参数对脱硫率的影响;在此基础上,引入功率超声进一步强化反应,并考察了超声频率、超声功率、超声时间等因素对脱硫效果的影响。实验结果表明,在反应温度60 ℃,反应时间90 min,氧化剂加入量V(H2O2)∶V(柴油)= 1∶10,催化剂用量15 g/L柴油的最佳氧化脱硫条件下,氧化柴油经萃取后脱硫率可达91.0%。超声强化后,氧化反应时间缩短为40 min,柴油脱硫率提高至95.6%。

英文摘要

Using WO3/ZrO2 solid superacid as catalyst, the performance of H2O2/WO3/ZrO2 system on the catalytic oxidative deep desulfurization of diesel were studied. The technical parameters,such as the amount of oxidant,the dosage of catalyst,the reaction temperature and the reaction time were investigated.Furthermore,the power ultrasound was introduced to enhance the process.The effects of ultrasonic frequency,intensity and time on the desulfurization were investigated.The experiment results revealed that under the optimum oxidative desulfurization conditions of oxidation temperature 60 ℃,reaction time 90 min,the oxidant dosage V(H2O2)∶V(diesel)= 1∶10 and the catalyst dosage 15 g/L diesel,after extraction of oxidized diesel the removal efficiency of sulfur compounds was up to 91.0%.The oxidation time with ultrasound were shortened to 40 min and the removal efficiency of sulfur compounds was increased to 95.6%.

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