应用化学 ›› 1995, Vol. 0 ›› Issue (6): 1-4.

• 研究论文 •    下一篇

碱土-稀土氧化物在甲烷偶联反应中的催化性能

杨向光, 毕颖丽, 甄开吉, 吴越   

  1. 吉林大学化学系, 长春 130023
  • 收稿日期:1994-12-12 修回日期:1995-06-07 出版日期:1995-12-10 发布日期:1995-12-10
  • 基金资助:
    国家自然科学基金资助课题

Catalytic Properties of Alkaline Earth-Rare Earth Oxides for Oxidative Coupling of Methane

Yang Xiangguang, Bi Yingli, Zhen Kaiji, Wu Yue   

  1. Department of Chemistry, Jilin University, Changchun 130023
  • Received:1994-12-12 Revised:1995-06-07 Published:1995-12-10 Online:1995-12-10

摘要: 研究了两个典型轻稀土La,Ce氧化物对甲烷氧化偶联反应的影响,具有较小比表面积的催化剂给出较高的C2选择性,但是催化剂的氧化还原性能对C2选择性的影响则更大,添加Li的作用除产生O-中心外,还可抑制催化剂的氧化还原能力,从而改善C2选择性.甲烷氧化偶联反应属催化剂引发的自由基反应.

关键词: 甲烷催化氧化偶联, 氧化-还原, 稀土氧化物

Abstract: Based upon the studies on two light rare earth oxides La2O3 and CeO2, it wasfound that catalysts with smaller specific surface area showed higher selectivity for C2 formation.Oxidation-redtiction properties of the catalysts can obviously affect the selectivity for C2 formation.Addition of Li- ion can inhibit the ability of oxdation and redtiction of cata-lysts, improving C2 selectivity.

Key words: catalytic oxidative coupling of methane, oxidation-reduction, rare earth oxide