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环境化学  2015 

碳纳米管负载Pd基催化剂对水中2,4-二氯酚的催化加氢脱氯

Keywords: 掺氮,Pd/MWNTs,Pd/N-MWNTs,2,4-DCP,液相加氢脱氯

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Abstract:

对多壁碳纳米管(MWNTs)进行掺氮得到含氮的多壁碳纳米管N-MWNTs,分别以MWNTs和N-MWNTs为载体,采用浸渍法合成了催化剂Pd/MWNTs和Pd/N-MWNTs.使用透射电镜(TEM)、电感耦合等离子体发射光谱仪(ICP)、X射线衍射仪(XRD)、元素分析仪等对催化剂进行了表征,并对2,4-二氯酚(2,4-DCP)的液相催化加氢脱氯反应进行了研究.结果表明,Pd/N-MWNTs对2,4-DCP具有更高的催化活性;该反应体系的催化反应过程不受传质阻力的影响;2,4-DCP在催化剂上的加氢脱氯行为符合Langmuir-Hinshelwood模型,即2,4-DCP的还原脱氯受表面吸附所控制.

References

[1]  庄惠生,王琼娥,阮国洪.水环境中氯酚污染物的高效液相色谱分析[J].环境化学,2003, 22(3): 263-266
[2]  Xia C H, Liu Y, Zhou S W, et al. The Pd-catalyzed hydrodechlorination of chlorophenols in aqueous solutions under mild conditions: A promising approach to practical use in wastewater [J]. Journal of Hazardous materials, 2009, 169: 1029-1033
[3]  Lu C, Chen W, Zhu D.Adsorption of zinc(Ⅱ) from water with purified carbon nanotubes [J]. Chemical Engineering Science, 2006, 61: 1138-1145
[4]  Hulicova-Jurcakova D,Seredych M, Lu G Q,et al.Combined effect of nitrogen-and oxygen-containing functional groups of microporous active carbon on its electrochemical performance in supercapacitors [J]. Advanced Functional Materials,2009,19:438-447
[5]  Yuan G, Keane M A. Liquid phase catalytic hydrodechlorination of 2,4-dichlorophenol over carbon supported palladium: An evaluation of transport limitations [J]. Chemical Engineering Science, 2003, 58: 257-267
[6]  张寅,邵芸,陈欢,等,Pd/TiO2对水体中2,4-二氯酚的催化加氢脱氯研究[J]. 环境科学,2012,33(1):88-93
[7]  U.S.EPA. Office of water. National recommended water quality criteria-correction, EPA 822-Z-99-001[S]. 1999
[8]  Vladimir I Kovalchuk, Julie L D'Itri. Catalytic chemistry of chloro- and chlorofluorocarbon dehalogenation: From macroscopic observation to molecular level understanding [J]. Applied Catalysis A: General, 2004, 271: 13-25
[9]  Amorim C, Yuan G, Patterson P M, et al.Catalytic hydrodechlorination over Pd supported on amorphous and structured carbon [J]. Journal of Catalysis, 2005, 234: 268-281
[10]  Yuan G, Keane M A. Liquid phase hydrodechlorination of chlorophenols over Pd/C and Pd/Al2O3: A consideration of HCl/catalyst interactions and solution pH effects [J]. Applied Catalysis B: Environmental, 2004, 52: 301-314
[11]  Chen H, Xu Z Y, Wan H Q, et al. Aqueous bromate reduction by catalytic hydrogenation over Pd/Al2O3 catalysts[J]. Applied Catalysis B:Environmental, 2010,96: 307-313
[12]  Yuan G, Keane M A. Aqueous-phase hydrodechlorination of 2,4-dichlorophenol over Pd/Al2O3: reaction under controlled pH [J]. Industrial and Engineering Chemistry Research, 2007, 46: 705-715
[13]  Diaz E, Casas J A, Mohedano A F, et al. Kinetics of the hydrodechlorination of 4-chlorophenol in water Ysing Pd,Pt,and Rh/A2O3 catalysts [J]. Industrial and Engineering Chemistry Research, 2008, 47:3840-3846

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