کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5148430 | 1497369 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High performance and stability of copper loading on mesoporous ceria catalyst for preferential oxidation of CO in presence of excess of hydrogen
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Copper (Cu) supported on mesoporous (MSP) ceria catalysts were prepared by deposition-precipitation (DP) method for the preferential CO oxidation of CO in a H2-rich stream (CO-PROX). A MSP ceria support with a high surface area of 293Â m2/g and ordered structure was synthesized by a nanocasting process using MCM-48 as template. All copper-MSP ceria catalysts show high dispersion of Cu and still maintain the fluorite structure of MSP ceria. Moreover, TEM imaging confirmed the three dimensional and long-range ordered pore structure of the Cu-catalysts. The reduction temperature of the Cu-catalysts decreases compared to pure MSP ceria and the reduction of Ce4+ to Ce3+ decreases with increasing copper content. An MSP ceria catalyst with 7Â wt% Cu loading (7Cu/MSP ceria) shows the highest activity with high stability for over 48Â h in various feed components, making it attractive for use as a catalyst in purification of hydrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 8, 23 February 2017, Pages 5537-5548
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 8, 23 February 2017, Pages 5537-5548
نویسندگان
Sureerat Jampa, Kanapos Wangkawee, Supakorn Tantisriyanurak, Jutamas Changpradit, Alexander M. Jamieson, Thanyalak Chaisuwan, Apanee Luengnaruemitchai, Sujitra Wongkasemjit,