Low temperature oxidative coupling of methane over a La(2)O(3)catalyst
- 化学化工－已发表论文 
The oxidative coupling of Methane could take place at 723 K over the La2O3 catalyst prepared by the precipitation method, which was about 100 K lower than the startup temperature over the commercial La2O3 catalyst. Under the conditions of 723 K, CH4/O-2 molar ratio of 3, and GHSV = 7 500 ml/(g . h), the conversion of methane and selectivity for C-2 hydrocarbons reached 26.6% and 40.8%, respectively. The characterization results showed that there was only hexagonal La2O3 over the two catalyst samples, but the catalyst prepared by precipitation had a larger specific surface area and a distinct desorption peak of adsorbed O-2 at 598 K.