کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
51358 46840 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Catalytic activity of ultrafine CexGdySmzO2 synthesized by metal organic complex method toward steam reforming of methane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Catalytic activity of ultrafine CexGdySmzO2 synthesized by metal organic complex method toward steam reforming of methane
چکیده انگلیسی

CexGdySmzO2 synthesized by metal organic complex method has useful methane steam reforming activity under moderate temperatures. This preparation technique offers materials with fluorite structure and ultrafine particle (having particle sizes less than 106.54 nm after calcined at 900 °C). Among the materials with various Ce/Gd/Sm ratios, Ce0.8Gd0.05Sm0.15O2 showed the highest reforming rate (102.9 molCH4 kg− 1 h− 1) compared to 23.1 molCH4 kg−1 h−1 observed over undoped-CeO2. This good performance was proven to relate with the improvements of oxygen storage capacity (OSC) and lattice oxygen mobility by Sm- and Gd-doping, according to the temperature programmed reduction/temperature programmed oxidation (TPR/TPO) and 18O/16O isotope exchange studies.

Graphical AbstractFigure optionsDownload as PowerPoint slideResearch Highlights
► CexGdySmzO2 synthesized by metal organic complex method has useful methane steam reforming activity.
► Ce0.8Gd0.05Sm0.15O2 shows high reforming rate (102.9 molCH4 kg− 1 h− 1) compared to 23.1 molCH4 kg−1 h−1 observed over undoped-CeO2.
► The good reforming performance is related to the improvements of oxygen storage capacity and lattice oxygen mobility by Sm- and Gd-doping.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 12, Issue 1, 25 October 2010, Pages 25–29
نویسندگان
, , , , ,