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Citation: Zhao Zhen, Yuan Song-Yue, Yu Zuo-Long. Study of Methane Oxidative Coupling over Ti-La-Li Mixed Oxides[J]. Acta Physico-Chimica Sinica, ;1994, 10(04): 324-329. doi: 10.3866/PKU.WHXB19940408 shu

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

1.
Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received Date: 21 September 1992
Available Online: 15 April 1994

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.
- Methane,
- Oxidative coupling,
- Catalyst,
- Titanium-lanthanum-lithium
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