Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (04): 324-329.doi: 10.3866/PKU.WHXB19940408

• ARTICLE • Previous Articles     Next Articles

Study of Methane Oxidative Coupling over Ti-La-Li Mixed Oxides

Zhao Zhen, Yuan Song-Yue, Yu Zuo-Long   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1992-09-21 Revised:1993-01-26 Published:1994-04-15
  • Contact: Yuan Song-Yue

Abstract:

The composition and structures of Li-Ti-La minxed oxides as well as their catalytic activity for methane oxidative coupling have been studied by means of XRD 、XPS、IR、SEM、 and so on. The results indicate that by changing x value in Li La_(1-x)Ti_xO_2 oxides phases of La_2O_3、 La-Ti_(1-y)Li_yO_(3-λ)、 Li_2TiO_3 and La_(0.66)TiO_(2.993) are formd. Among them the complex oalde LaTi1-y LiyO3-λ is the active phase for methane oxidative coupling due to the formation of active site Li~+-O~--Ti~(3+), while Li_(1.33)Ti_(1.66)O_4 is not active for both methane oxidative coupling and deep oxidation.

Key words: Methane, Oxidative coupling, Catalyst, Titanium-lanthanum-lithium