کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7720018 | 1497501 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High catalytic kinetic performance of amorphous CoPt NPs induced on CeOx for H2 generation from hydrous hydrazine
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
CeOx-induced amorphization of CoPt nanoparticles (NPs) is achieved by a facile co-reduction method using sodium borohydride (NaBH4) as the reducing agent at room temperature (298Â K) under ambient atmosphere. The investigation results indicate that CeOx plays a critical role in transferring the crystalline CoPt nanoalloy into the amorphous one. To our surprise, the resultant Co0.65Pt0.30(CeOx)0.05 NPs exhibit high catalytic kinetic performance with 72.1% hydrogen (H2) selectivity for the H2 generation from hydrous hydrazine (N2H4) within only a few minute at 298Â K. Although complete conversion is not achieved, but the initial turnover frequency value of 194.8Â hâ1 for the present amorphous catalyst is much higher than that of crystalline one. Moreover, such a highly rapid catalyst may greatly encourage the practical application of hydrous N2H4 as a hydrogen storage material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 8, 6 March 2014, Pages 3755-3761
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 8, 6 March 2014, Pages 3755-3761
نویسندگان
O. Song-Il, Jun-Min Yan, Hong-Li Wang, Zhi-Li Wang, Qing Jiang,