کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1259792 971696 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced CO oxidation activity of CuO/CeO2 catalyst prepared by surfactant-assisted impregnation method
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Enhanced CO oxidation activity of CuO/CeO2 catalyst prepared by surfactant-assisted impregnation method
چکیده انگلیسی

A modified CuO/CeO2 catalyst was prepared by surfactant-assisted impregnation method and showed better catalytic activity for low temperature CO oxidation than that from conventional impregnation method. The physicochemical properties of different CuO/CeO2 catalysts were characterized by thermogravimetric and differential scanning calorimetric measurements (TG-DSC), X-ray diffraction (XRD), N2 adsorption-desorption, Raman spectroscopy, H2 temperature-programmed reduction (H2-TPR), temperature-programmed desorption of O2 (O2-TPD), and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The results suggested that the addition of hexadecyl trimethyl ammonium bromide (CTAB) into the impregnation solution could improve the dispersion of CuO species, which could facilitate Cu2+ incorporating into CeO2 lattice and strengthened the synergistic effects between CuO and CeO2, making the lattice oxygen more active, and eventually resulting in enhanced activity for CO oxidation.

Graphical AbstractCO oxidation activity over Cu/Ce(CI) and Cu/Ce(SI) catalysts Reaction conditions: 4 vol.% CO, 10 vol.% O2, balance in N2, SV=9,000 mL/(g·h)Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 33, Issue 12, 1 December 2015, Pages 1268–1274
نویسندگان
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