کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1732988 1521491 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Micro poly(3-sulfopropyl methacrylate) hydrogel synthesis for in situ metal nanoparticle preparation and hydrogen generation from hydrolysis of NaBH4
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Micro poly(3-sulfopropyl methacrylate) hydrogel synthesis for in situ metal nanoparticle preparation and hydrogen generation from hydrolysis of NaBH4
چکیده انگلیسی

Polymeric hydrogels derived from SPM (3-sulfopropyl methacrylate) of micrometer size were used in the preparation of a composite-catalyst system for hydrogen generation from hydrolysis of NaBH4. In situ Co and Ni nanoparticles were prepared by chemical reduction of absorbed Co (II) and Ni (II) ions inside the hydrogel networks, and the whole composite was used as a catalyst system. The catalytic activity of the metal nanoparticles within the p(SPM) hydrogel matrix was better and faster using Co than with Ni. Additionally, other parameters that affect the hydrogen generation rate, such as temperature, metal reloading, the catalyst amounts as well as reusability, were also investigated. It was found that p(SPM)–Co micro hydrogels were even effective for hydrogen generation at 0 °C with a hydrogen generation rate of 966 (mL H2) (min)−1 (g of Co)−1. The activation energy, activation enthalpy, and activation entropy for the hydrolysis reaction of NaBH4 with micro p(SPM)–Co catalyst system were calculated as 44.3 kJ/mol, 43.26 kJ/mol K, and −150.93 J/mol K, respectively.


► Microgel embedding metal catalyst for H2 production.
► Advanced materials for green energy.
► Soft microgel reactors for H2 production from NaBH4 hydrolysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 55, 15 June 2013, Pages 511–518
نویسندگان
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