کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7715635 | 1497455 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface-modified proton conducting perovskite hollow fibre membranes by Pd-coating for enhanced hydrogen permeation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Surface-modified proton conducting perovskite hollow fibre membranes by Pd-coating for enhanced hydrogen permeation Surface-modified proton conducting perovskite hollow fibre membranes by Pd-coating for enhanced hydrogen permeation](/preview/png/7715635.png)
چکیده انگلیسی
BaCe0.95Tb0.05O3âα (BCTb) proton conducting perovskite hollow fibre membranes were fabricated by the combined phase-inversion and sintering technique. Surface modification was performed by H2SO4 etching and/or by Pd-coating on the hollow fibre surfaces to improve the hydrogen permeation. Hydrogen permeation fluxes through the resultant hollow fibre membranes were measured between 650 and 1000 °C, using 50-50% H2-He feed on the shell side and N2 as the sweep gas in the fibre lumen. The results indicate that coating porous Pd layers on the hollow fibre membrane surfaces could promote remarkably the hydrogen flux, i.e. from 0.046 mL cmâ2 minâ1 at 900 °C in the original hollow fibre, to 0.272 mL cmâ2 minâ1 in the Pd-coated membrane, whereas the H2SO4 etching modification would deteriorate the hydrogen permeation due to the contamination of sulphur-containing compounds. The surface exchange kinetics plays an important role in the hydrogen permeation through the BCTb perovskite membranes, which can be improved by coating porous Pd layers on either or both surfaces of the hollow fibre perovskite membranes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 18, 18 May 2015, Pages 6118-6127
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 18, 18 May 2015, Pages 6118-6127
نویسندگان
Jian Song, Bo Meng, Xiaoyao Tan, Shaomin Liu,