کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
50624 46805 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dehydrogenation of propane with selective hydrogen combustion: A mechanistic study by transient analysis of products
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Dehydrogenation of propane with selective hydrogen combustion: A mechanistic study by transient analysis of products
چکیده انگلیسی

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.

Figure optionsDownload as PowerPoint slideResearch highlights
► 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 11, Issue 15, 25 September 2010, Pages 1211–1214
نویسندگان
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