高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (12): 2849.

• 研究论文 • 上一篇    下一篇

SBA-15介孔分子筛负载型过渡金属催化燃烧脱除乙腈废气

曹宇,陈标华,张润铎   

  1. 北京化工大学化工资源有效利用国家重点实验室, 北京 100029
  • 收稿日期:2011-03-01 修回日期:2011-05-19 出版日期:2011-12-10 发布日期:2011-11-25
  • 通讯作者: 张润铎 E-mail:zhangrd@mail.buct.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20821004, 20977004, 21177008)、教育部博士学科点基金(批准号: 20090010120003)和中央高校基本科研业务费(批准号: ZZ1003)资助.

Selectively Catalytic Combustion of Acetonitrile by Transition\|metal Supported Mesoporous Molecular Sieve SBA-15

CAO Yu, CHEN Biao-Hua, ZHANG Run-Duo*   

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2011-03-01 Revised:2011-05-19 Online:2011-12-10 Published:2011-11-25
  • Contact: ZHANG Run-Duo E-mail:zhangrd@mail.buct.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20821004, 20977004, 21177008)、教育部博士学科点基金(批准号: 20090010120003)和中央高校基本科研业务费(批准号: ZZ1003)资助.

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被引次数

19

摘要： 制备了具有规则孔道结构和较高比表面积的SBA-15介孔分子筛, 采用真空旋转蒸发法将过渡金属(Cu, Co, Cr和Mn)负载到SBA-15表面, 得到负载型过渡金属催化剂, 并将其用于含氰废气催化燃烧的实验中, 考察了其催化活性. 催化剂的理化性能通过X射线衍射(XRD)、氮气吸附-脱附、透射电子显微镜(TEM)、H2-程序升温还原(TPR)和X射线光电子能谱(XPS)等手段进行了表征. 活性评价结果表明, 在乙腈催化燃烧过程中, 除目的产物N2和CO2外, 还产生NO, NO2, N2O, NH3和CO等副产物; Cu/SBA-15催化剂对乙腈废气的脱除具有最佳的乙腈催化燃烧活性和氮气选择性, 当温度高于350 ℃时, 乙腈的转化率接近100%, 而氮气产率高达80%左右.

关键词: SBA-15介孔分子筛, 乙腈, 催化燃烧, 铜, 催化剂

Abstract: A series of mono-functional M/SBA-15(M=Cu, Co, Cr and Mn) catalysts was prepared via an incipient wetness impregnation, and characterized by XRD, N2 adsorption, TEM, H2-TPR and XPS as well as activity test for CH3CN+O2 reaction. Apart from the target product of N2, harmful by-products of NO, NO2, N2O, NH3 and CO were also observed during the combustion process. Among the prepared M/SBA-15 samples, Cu/SBA-15 exhibited a nearly complete conversion of CH3CN associated with a N2 selectivity around 80%, which was regarded as a promising material for the catalytic removal of cyanide-containing gas.

Key words: Mesoporous molecular sieve SBA-15, Acetonitrile, Catalytic combustion, Copper, Catalyst

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