کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8012011 1516935 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of biomorphic hierarchical CeO2 microtube with enhanced catalytic activity
ترجمه فارسی عنوان
سنتز میکروووبای سلول سلولی بیومورفیک با فعالیت کاتالیزوری افزایش یافته است
کلمات کلیدی
سنتز، بیومتریک، ساختار چندگانه سرایا، عملکرد کاتالیزوری،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
A biomorphic CeO2 microtube with multiple-pore structure was fabricated by using the cotton as biotemplate, through cerium nitrate solution infiltration and thermal decomposition. Field emission scanning electron microscope (FESEM), powder X-ray diffraction (XRD), transmission electron microscope (TEM), N2 adsorption-desorption isotherms, temperature-programmed reduction (TPR) and CO oxidation were used to characterize the samples. The results indicated that the synthesized products were composed of crystallites with grain size about 9 nm and exhibited a fibrous morphology similar to the original template and possessed a specific surface area (BET) of 62.3 m2/g. Compared with the conventional CeO2 particles, the synthesized materials showed a superior catalytic activity for CO oxidation. For the synthesized fibrous CeO2, the CO conversion at 320 °C was above 90% and a 100% CO conversion was obtained at 410 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 27, Issue 3, March 2017, Pages 578-583
نویسندگان
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