کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7717583 | 1497476 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of catalytically active rock salt structured MgxNb1âxO nanoparticles for MgH2 system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This communication deals with the ex-situ synthesis of rock salt type MgxNb1âxO whose structural characteristics are closely related with MgO. XRD examination of 30 h ball milled MgH2 + Nb2O5 confirms the formation of a rock salt product MgxNb1âxO, which is comparable to the recently reported active catalyst MgxNb1âxO formed in-situ in MgH2 milled with 8 mol.% Nb2O5. It is shown that MgH2 catalyzed with the pre-made 2 wt.% MgxNb1âxO desorbs hydrogen at least 50 °C lower than the in-situ 2 wt.% Nb2O5 catalyzed MgH2 with improved reversible absorption. This result highlights that the proposed pathway mechanism on the basis of Nb2O5 catalyst may need further verification and that the addition of the MgxNb1âxO catalyst in a pre-reduced state can offer distinct performance advantages over its in-situ preparation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 18984-18988
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 18984-18988
نویسندگان
D. Pukazhselvan, I. Antunes, Sergio Lo Russo, J. Perez, Duncan Paul Fagg,