介孔硅胶在柴油氧化-吸附组合脱硫中的应用研究

徐康文; 冯丽娟; 王景刚; 李宇慧; 李春虎

介孔硅胶在柴油氧化-吸附组合脱硫中的应用研究

中国海洋大学化学化工学院, 山东青岛 266100

基金项目: 青岛市科技局科技计划(07-2-3-13-jch)。

详细信息

通讯作者:
冯丽娟(1964-), 女, 博士, 教授, Tel: 0532-66782707; E-mail: fenglj@ouc.edu.cn.

中图分类号: TQ426.81
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- 文章访问数: 2030
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- 被引次数: 0
出版历程
- 收稿日期: 2011-12-03
- 修回日期: 2012-03-19
- 刊出日期: 2012-08-31

Application of mesoporous silica gel in desulfurization of diesel oil via oxidation-adsorption process

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

摘要

摘要: 以硅胶(SG)为吸附剂,采用自制的双亲催化剂与H₂O₂组成的催化氧化体系将柴油进行氧化,利用固定床动态吸附法考察了硅胶性质、氧化过程及吸附条件等对硅胶吸附脱硫性能的影响,并对硅胶进行了表征。小角XRD和氮气吸脱附结果表明,实验所用硅胶具有介孔结构。吸附脱硫实验结果表明,在油剂比(柴油与吸附剂的体积比)相同时,氧化-吸附脱硫过程脱硫率明显高于吸附脱硫过程脱硫率;选用硅胶作吸附剂,吸附温度为40℃,吸附空速为6.0 h^-1时脱硫效果较好,当油剂比为1时,脱硫率高达94.57%,且该介孔硅胶具有较大的吸附硫容,随油剂比增大下降缓慢,当油剂比增大到15时,脱硫率仍达85.89%。
- 介孔硅胶 /
- 氧化-吸附 /
- 脱硫 /
- 柴油
Abstract: The desulfurization of diesel oil was conducted via oxidation-adsorption process, using H₂O₂ as oxidant in the presence of amphiphilic catalyst and mesoporous silica-gel as the adsorbent. The fixed-bed dynamic adsorption method was employed to evaluate the oxidation-adsorption desulfurization capability of the catalysts and the effects of the property of silica-gel, oxidation and adsorption conditions on desulfurization efficiency were investigated. It was proved that the silica-gel possessed the mesoporous structure characterized by small-angle XRD and N₂ adsorption-desorption isotherm. Compared with adsorption process, oxidation-adsorption process could availably increase the adsorptive capacity and selectivity of silica-gel adsorbent to sulfur compounds in diesel oil.The sulfur removal efficiency remained as high as 85.89% when the volume ratio of diesel oil to silica-gel was 15. Sulfur removal efficiency reached up to 94.57% when adsorption temperature, space velocity and volume ratio of diesel oil to silica-gel were 40℃, 6.0 h^-1 and 1 respectively.
- mesoporous silica gel /
- oxidation-adsorption /
- desulfurization /
- diesel oil

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参考文献(13)

SONG C. An overview of new approaches to deep desulfurization for ultra-clean gasoline, diesel fuel and jet fuel[J]. Catalysis Today, 2003, 86(1/4): 211-263.

王少军, 凌凤香, 王安杰. 柴油非加氢脱硫技术研究中样品的选择[J], 燃料化学学报, 2005, 33(2): 171-174. (WANG Shao-jun, LING Feng-xiang, WANG An-jie. Testing sample choice for non-hydrodesulfurization of diesels[J]. Journal of Fuel Chemistry and Technology, 2005, 33(2): 171-174.)

YAZU K, FURUYA T, MIKI K, UKRGAWAK. Tungstophosphoric acid catalyzed oxidative desulfurization of light oil with hydrogen peroxide in a ligh t oil/ acetic acid biphasic system[J]. Chem Lett, 2003, 32(10): 920-921.

查庆芳, 高南星, 李兆丰, 卓海波, 张玉贞. 石油焦系活性炭的吸附脱硫[J]. 燃料化学学报, 2007, 35(2): 192-197. (ZHA Qing-fang, GAO Nan-xing, LI Zhao-feng, ZHUO Hai-bo, ZHANG Yu-zhen. Adsorption desulfurization by activated carbon from petroleum coke[J]. Journal of Fuel Chemistry and Technology, 2007, 35(2): 192-197.)

王建龙, 赵地顺, 周二鹏, 董芝. 吡啶类离子液体在汽油萃取脱硫中的应用研究[J]. 燃料化学学报, 2007, 35(3): 293-296. (WANG Jian-long, ZHAO Di-shun, ZHOU Er-peng, DONG Zhi. Desulfurization of gasoline by extraction with N-alkyl-pyridinium-based ionic liquids[J]. Journal of Fuel Chemistry and Technology, 2007, 35(3): 293-296.)

ISHIHARA A, WANG D, DUMEIGNIL F, AMANO H, QIAN EW, KABE T. Oxidative desulfurization and denitrogenation of a light gas oil using an oxidation/adsorption continuous flow process[J]. Appl Catal A, 2005, 279(1/2): 279-287.

MA X, VELU S, KIM J, SONG C. Deep desulfurization of gasoline by selective adsorption over solid adsorbents and impact of analytical methods on ppm-level sulfur quantification for fuel cell applications [J]. Appl Catal B, 2005, 56(1/2): 137-147.

冯辉, 曾勇平, 居沈贵. 载铜5A分子筛在汽油模拟体系中脱硫性能的研究[J]. 燃料化学学报, 2006, 34(1): 117-119. ( FENG Hui, ZENG Yong-ping, JU Shen-gui. Desulfurization of model gasoline by 5A molecular sieves loaded with Cu^{2 +} [J]. Journal of Fuel Chemistry and Technology, 2006, 34(1): 117-119.)

孟启, 孙小强, 姜艳, 席海涛, 杨绪杰, 陆路德, 汪信. 磺酸型树脂酰胺化修饰及修饰产物的吸附脱硫研究[J]. 燃料化学学报, 2007, 35(2): 249-252. (MENG Qi, SUN Xiao-qiang, JIANG Yan, XI Hai-tao, YANG Xu-jie, LU Lu-de, WANG Xin. Adsorptive desulfurization properties of sulfuric resin with amidat modification[J]. Journal of Fuel Chemistry and Technology, 2007, 35(2): 249-252.)

何余生, 李忠, 奚红霞, 郭建光, 夏启斌. 气固吸附等温线的研究进展[J]. 离子交换与吸附, 2004, 20(4):376-384. (He Yu-sheng, Li Zhong, Xi Hong-xia, Guo Jian-guang, Xi Qi-bin. Research progress of gas-solid adsorption isotherms[J]. Ion Exchange and Adsorption, 2004, 20(4): 376-384.)

汪政德, 张茂林, 梅海燕. 毛细凝聚和吸附-脱附回路的物理化学解释[J]. 新疆石油地质, 2002, 23(3): 233-236. (WANG ZHENG-de, ZHANG Mao-lin, MEI Hai-yan. The physical chemistry explanation of the capillary condensation and the circuit of adsorption-desorption[J]. Xinjiang Petroleum Geology, 2002, 23(3): 233-236.)

GROEN J C, PREZ-RAMIREZ. Critical Appraisal of mesopore characterization by adsorption analysis[J]. Appl Catal A, 2004, 268(1/2): 121-125.

宁永成. 有机化合物结构鉴定与有机波谱学[M]. 2版. 北京: 科学出版社, 2008: 322-363. (NING Yong-cheng. Structural identification of organic compounds and organic spectroscopy[M]. 2nd ed. Beijing: Science Press, 2008: 322-363.)

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