应用化学 ›› 1994, Vol. 0 ›› Issue (6): 53-56.

• 研究论文 • 上一篇    下一篇

冲击波处理的结晶MgO催化乙烷氧化脱氢反应

张菊, 郑小明   

  1. 杭州大学催化研究所 杭州 310028
  • 收稿日期:1994-02-21 修回日期:1994-07-13 出版日期:1994-12-10 发布日期:1994-12-10
  • 基金资助:
    国家自然科学基金;浙江省自然科学基金资助项目

Catalytic Oxidative Dehydtogenation of Ethane by Shock Wave Treated MgO Crystal

Zhang Ju, Zheng Xiaoming   

  1. Institute of Catalysis, Hangzhou University, Hangzhou 310028
  • Received:1994-02-21 Revised:1994-07-13 Published:1994-12-10 Online:1994-12-10

摘要: XRD和ESR技术研究表明,结晶MgO经冲击波处理后晶格发生畸变,晶粒界面微扭曲值明显增大,从而提高了晶体缺陷浓度,并可能形成F;晶体的平均晶粒减小,且表现出晶体破碎程度的各向异性。在不同反应温度、空速及时间的条件下考察冲击处理前后的MgO催化剂对乙烷氧化脱氢反应的影响,发现用经冲击波处理的MgO作催化剂,乙烷的转化率、乙烯的选择性均有一定程度的提高,初步讨论了可能的结构模型和催化机理。

关键词: 结晶MgO, 冲击波处理, 乙烷, 氧化脱氢

Abstract: A large number of defects were formed on the surface of MgO crystal on shock wave treatment. The microdistortion value of crystal increased obviously and some F colour centers are considered to be formed.The shock wave treated MgO exhibited a higher ethane conversion and ethylene selectivity in the oxidative dehydrogenation of ethane, The effects of reaction temperature,time and space velocity in dehydrogenation have been examined. A possible model for structure modification and a catalytic mechanism of MGO crystal on the shock wave treatnient have been proposed.

Key words: magnesium oxide crystal, shock wave treatment, ethane, catalytic oxidative dehy-drogenation