کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
66554 48437 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Deactivation studies of Fischer–Tropsch synthesis on nano-structured iron catalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Deactivation studies of Fischer–Tropsch synthesis on nano-structured iron catalyst
چکیده انگلیسی

Deactivation kinetics of bulk and nano-structured microemulsion prepared iron catalysts were studied in Fischer–Tropsch synthesis (FTS), from fitting of data to a generalized power-law expression (GPLE), rd = kd (a − a∞)m. Conventional bulk iron catalyst was prepared by general bulk co-precipitation method and nano-structured iron catalyst was prepared by microemulsion method. A deactivation model involving parallel paths is proposed, i.e. simultaneous conversion of (a) atomic to polymeric to graphitic carbon and (b) active carbon-rich carbides to inactive carbon-poor carbides. Compositions of bulk iron phase and phase transformations of carbonaceous species during catalyst deactivation in FTS reaction were characterized by temperature-programmed surface reaction with hydrogen (TPSR-H2), XRD and TEM techniques.

Deactivation kinetics of bulk and nano-structured microemulsion prepared iron catalysts were studied in Fischer–Tropsch synthesis (FTS), from fitting of data to a generalized power-law expression (GPLE), rd = kd (a − a∞)m.Figure optionsDownload high-quality image (33 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 330, Issues 1–2, 1 September 2010, Pages 112–120
نویسندگان
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