کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
635927 | 1456119 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxygen permeation and partial oxidation of methane in dual-phase membrane reactors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Oxygen permeation and partial oxidation of methane in dual-phase membrane reactors Oxygen permeation and partial oxidation of methane in dual-phase membrane reactors](/preview/png/635927.png)
چکیده انگلیسی
Oxygen permeation and partial oxidation of methane (POM) were investigated in 75 wt.% Ce0.85Sm0.15O1.925-25 wt.% Sm0.6Sr0.4FeO3âδ (SDC-SSF) dual-phase composite membrane reactors. The dual-phase membrane prepared via a one-pot method comprises a fluorite-type oxide ionic conductor (SDC) for the transport of oxide ions and a perovskite-type mixed conductor (SSF) for the transport of both oxide ions and electrons. X-ray diffraction (XRD) results reveal good phase compatibility between the fluorite and perovskite oxides even after sintered at high temperature. The oxygen permeation flux increased with time in the initial stage, from 0.23 to 0.5 cm3 cmâ2 minâ1 in the first 18 h. Once a steady state was reached, the permeation flux remained constant in the investigated period (> 500 h). Long-term operation of POM reaction was successfully achieved in dual-phase membrane reactors, and methane conversion and CO selectivity >98% were obtained for pure methane as the feed. XRD, scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDX) characterizations reveal good structural stability for the dual-phase membrane, even after long-term operation under syngas production conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 360, Issues 1â2, 15 September 2010, Pages 454-460
Journal: Journal of Membrane Science - Volume 360, Issues 1â2, 15 September 2010, Pages 454-460
نویسندگان
Xuefeng Zhu, Qiming Li, Yufeng He, You Cong, Weishen Yang,