کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8109392 | 1522252 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis gas generation by chemical-looping selective oxidation of methane using Pr1âxZrxO2âδ oxygen carriers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
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چکیده انگلیسی
The Pr1âxZrxO2âδ complex oxides (x = 0, 0.1, 0.3, 0.5, 0.7, and 0.9) prepared by precipitation method were characterized by X-ray diffraction (XRD), H2 temperature programmed reduction (H2-TPR), O2 temperature programmed desorption (O2-TPD) and X-ray photoelectron spectroscopy (XPS) technologies. Chemical-looping selective oxidation of methane (CLSOM) process using a gas-solid reaction between methane and Pr-Zr complex oxides was investigated at 850 °C for the synthesis gas generation. Pr-Zr-O solid solution could be formed by incorporation of Zr4+ to Pr6O11 at a large proportion range (0.1-0.9). Oxygen mobility and thermal stability of Pr-Zr samples was obviously enhanced by the formation of Pr-Zr-O solid solution. Pr-rich Pr-Zr oxygen carriers showed high selectivity towards CO and H2 and high methane conversion. Synthesis gas with a suitable H2/CO ratio of 2.0 could be obtained over those samples. Pr0.7Zr0.3O2âδ performed satisfactory performance for the successive generation of synthesis gas in CLSOM process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Energy Institute - Volume 89, Issue 4, November 2016, Pages 745-754
Journal: Journal of the Energy Institute - Volume 89, Issue 4, November 2016, Pages 745-754
نویسندگان
Yunpeng Du, Xing Zhu, Hua Wang, Yonggang Wei, Kongzhai Li,