ISSN:
1572-879X
Keywords:
Methane oxidative coupling
;
barium-titanium oxides
;
oxyfluorides
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The addition of F− to Ba-Ti mixed oxide catalysts significantly improves the catalytic performances for the oxidative coupling of methane (MOC), which can achieve high C2 yields at wide feed composition range and high GHSV. The effect is particularly marked for the BaF2− TiO2 catalysts containing more than 50 mol% BaF2. The C2 yield of 17% and the C2 selectivity of 〉 60% were achieved over these catalysts at 700 ° C. After being on stream for 31 h, the ≥ 50 mol% BaF2-TiO2 catalysts showed only a 1–1.5% decrease in the C2 yields. Results obtained by XRD show that various Ba-Ti oxyfluoride phases were formed due to the substitution of F− to O2−.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00769290
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