## CaO catalysts promoted with various elements were examined systematplly for the oxidative coupling of methane. 10 mol% Li+-CaO and 10 mol% Ba -CaO gave high C2 yield (23 to 26% at 1023 to 1073 K for 10% Li+-CaO) under CH4 and 02 partral pressure of 2.8 an $+1.4 kPa respectively. A three compo
Transient studies on methane oxidative coupling over alkali-metal promoted titanate catalysts
β Scribed by E.E. Miro; Z. Kalenik; J. Santamaria; E.E. Wolf
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 483 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0920-5861
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β¦ Synopsis
A transient method to study the role of the different oxygen species involved in oxidative coupling of methane is discussed. The method is applied to two new active catalysts for this process, which are based on alkali metal loaded titanates of lanthanum and nickel and also to a lithium/titania catalyst used in previous works. The results show that the participation of lattice oxygen in the formation of C2 products depends on the Li loading and the type of titanate used.
π SIMILAR VOLUMES
Pulse reaction method and in situ IR spectroscopy were used to characterize the active oxygen species for oxidative coupling of methane (OCM) over SrF 2 /Nd 2 O 3 catalyst. It was found that OCM activity of the catalyst was very low in the absence of gas phase oxygen, which indicated that lattice ox