高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (3): 427.

• 论文 • 上一篇    下一篇

铜离子的引入对甲烷无氧芳构化催化剂Mo/CuH-ZSM-5中Mo物种化学状态的影响

李爽1, 王东阳1, 傅颖寰1, 吴鹏1, 吴通好1, 刘颖2, 张春雷3, 林励吾3, 包信和3   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 大庆油田化工总厂, 大庆 163712;
    3. 中国科学院大连化学物理研究所, 大连 116023
  • 收稿日期:1999-05-24 出版日期:2000-03-24 发布日期:2000-03-24
  • 通讯作者: 李　爽(1973年出生),女,博士研究生,主要从事分子筛催化化学研究.
  • 基金资助:

    中国博士后科学基金;国家“九五”攀登计划(批准号:95-预-36-2.1);国家重点基础研究发展规划(批准号:G1999022400)资助

The Effect of Cu Species on the Chemical State of Mo in the Mo/CuH-ZSM-5 Catalyst for Methane Non-oxidative Aromatization

LI Shuang1, WANG Dong-Yang1, FU Ying-Huan1, WU Peng1, WU Tong-Hao1, LIU Ying2, ZHANG Chun-Lei3, LIN Li-Wu3, BAO Xin-He3   

  1. 1. Department of Chemistry, Jilin University, Changchun 130023, China;
    2. The General Chemical Works of Daqing Oil Field, Daqing 163712;
    3. China Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:1999-05-24 Online:2000-03-24 Published:2000-03-24

PDF (PC)

被引次数

10

摘要： 对比考察了Mo/CuH-ZSM-5和Mo/H-ZSM-5催化剂的甲烷无氧芳构化性能,并用XRD,XPS,ESR等多种测试手段对反应前后催化剂上的Mo物种及铜助剂的价态变化进行了详细研究,发现Cu(Ⅱ)部分取代H-ZSM-5交换位上的H+后,抑制了活性组分MoO3的还原,而Cu物种自身被还原,进而将这种价态变化与催化剂的活性进行了关联.

关键词: 过渡金属离子, 离子交换沸石, Mo/CuH-ZSM-5, 甲烷无氧芳构化, 苯

Abstract: The catalytic performance of Mo/CuH-ZSM-5 was compared with that of Mo/H-ZSM-5 for methane aromatization in the absence of oxygen. The Cu ions acted as promoters, and the activity and stability of catalysts for methane aromatization were enhanced to some extent. The fresh and reacted catalysts was studied by XRD, ESRand XPSmethods, and it is found that by the addition of Cu species, the reduction of MoO3 was suppressed and the Cu species itself was reduced. It is supposed that the Mo species with a higher oxidative state is responsible for the activation and conversion of methane.

Key words: Transition metal ions, Ion exchanged zeolite, MoO3/MH-ZSM-5, Methane non oxidative aromatization, Benzene

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