کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
152387 456494 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Aluminium anodisation for Au-CeO2/Al2O3-Al monoliths preparation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Aluminium anodisation for Au-CeO2/Al2O3-Al monoliths preparation
چکیده انگلیسی

The anodisation of aluminium monoliths was performed in order to generate an alumina layer that ensures a good adherence of the catalysts. In this study, it is demonstrated that the morphology of the produced alumina layer depends on time, temperature, current density and concentration of the selected electrolyte. When anodisation process with the extreme conditions was applied (30 °C, 50 min, 2 A dm−2 and 2.6 M of sulphuric acid) a significant cracks were obtained and used to fix the subsequent catalytic coatings. The washcoating method was used to cover the monoliths with colloidal solutions of CeO2 and/or Au-CeO2 catalysts. The resulting monolithic catalysts were tested in the CO oxidation reaction being 1%Au-CeO2 containing system the most active. The structured catalyst prepared this way changed neither the textural nor the catalytic properties of the deposited catalytic powders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 151, Issues 1–3, 15 August 2009, Pages 324–332
نویسندگان
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