کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
50624 | 46805 | 2010 | 4 صفحه PDF | دانلود رایگان |

The role of lattice and adsorbed oxygen species in propane dehydrogenation in a perovskite hollow fiber membrane reactor containing a Pt–Sn dehydrogenation catalyst was elucidated by transient analysis of products with a sub-millisecond time resolution. Propane is mainly dehydrogenated non-oxidatively to propene and hydrogen over the catalyst, while lattice oxygen of the perovskite oxidizes preferentially hydrogen to water. For achieving high propene selectivity at high propane conversions, the formation of gas phase O2 on the shell side of the membrane reactor should be avoided. Otherwise, oxygen species adsorbed over the Pt–Sn catalyst participate in non-selective C3H8/C3H6 transformations to C2H4 and COx.
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► Role of oxygen species in propane dehydrogenation in a perovskite membrane reactor was elucidated.
► Transient analysis of reaction products with a sub-millisecond time resolution.
► Propane is mainly dehydrogenated non-oxidatively to propene and hydrogen over Pt-Sn catalyst.
► Lattice oxygen of perovskite oxidizes preferentially hydrogen compared to propane.
Journal: Catalysis Communications - Volume 11, Issue 15, 25 September 2010, Pages 1211–1214