کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1605883 | 1516216 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
PdNi nanoparticles supported on MIL-101 as high-performance catalysts for hydrogen generation from ammonia borane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Mono-metal Pd, Ni and highly dispersed bimetallic PdNi alloy nanoparticles with different molar ratio supported on MIL-101 have been successfully synthesized by a simple liquid impregnation-reduction method. And XRD, TEM, EDX, ICP-AES, XPS, BET and FTIR were employed to characterize the above catalysts. Their catalytic activities were tested in the hydrogen generation from aqueous solution of ammonia borane at room temperature. The results show that the as-synthesized Pd10Ni6@MIL-101 catalyst exhibits the highest catalytic activity, with a total turn over frequency (TOF) value of 83.1Â mol H2Â minâ1 (mol Pd)â1, and the activation energy (Ea) was determined to be 31.7Â kJÂ molâ1. The excellent catalytic activity has been successfully achieved thanks to the strong bimetallic synergistic effects from PdNi nanoparticals of the composites, uniform distribution of nanoparticles as well as bifunctional effects between PdNi alloy nanoparticles and the host of MIL-101. In particular, this catalyst shows satisfying durable stability after five cycles for the hydrolytic dehydrogenation of ammonia borane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 677, 25 August 2016, Pages 87-95
Journal: Journal of Alloys and Compounds - Volume 677, 25 August 2016, Pages 87-95
نویسندگان
Le Zhang, Liqun Zhou, Kunzhou Yang, Doudou Gao, Chen Huang, Yafang Chen, Feng Zhang, Xing Xiong, Ling Li, Qinghua Xia,