کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
151452 456471 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structured catalysts via multiple stage thermal oxidation synthesis of FeCrAl alloy sintered microfibers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Structured catalysts via multiple stage thermal oxidation synthesis of FeCrAl alloy sintered microfibers
چکیده انگلیسی

A structured catalyst support was developed based on FeCrAl alloy sintered microfibers (SMF) via multiple stage thermal oxidation in air for 1 h at 930 °C, 1 h at 960 °C and 2 h at 990 °C. The procedure resulted in the formation of a forest of predominantly α-alumina whiskers (200 nm in height and 100 nm apart). Palladium deposition and reduction yielded 0.5 wt.% Pd/SMF with 20 nm nanoparticle size. The catalyst was tested in three-phase hydrogenation of 2-methyl-3-buten-2-ol, and due to its pore structure allowed eliminating internal mass transfer limitations. The developed support can be beneficial to catalytic reactions suffering from mass transfer limitations and catalyst deactivation via pore mouth blocking. As compared to other methods of structured catalyst preparation, the thermal oxidation procedure is simple, fast and environmentally benign, and eliminates problems associated with poor adhesion of traditional washcoated layers of powdered catalysts or supports.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 168, Issue 1, 15 March 2011, Pages 470–476
نویسندگان
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