کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1279041 1497633 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Activated carbon catalysts for the production of hydrogen via the sulfur–iodine thermochemical water splitting cycle
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Activated carbon catalysts for the production of hydrogen via the sulfur–iodine thermochemical water splitting cycle
چکیده انگلیسی

Seven activated carbon catalysts obtained from a variety of raw material sources and preparation methods were examined for their catalytic activity to decompose hydrogen iodide (HI) to produce hydrogen, a key reaction in the sulfur–iodine (S–I) thermochemical water splitting cycle. Activity was examined under a temperature ramp from 473 to 773 K. Within the group of lignocellulosic steam-activated carbon catalysts, activity increased with surface area. However, both a mineral-based steam-activated carbon and a lignocellulosic chemically activated carbon displayed activities lower than expected based on their higher surface areas. In general, ash content was detrimental to catalytic activity while total acid sites, as determined by Boehm's titrations, seemed to favor higher catalytic activity within the group of steam-activated carbons. These results suggest that activated carbon raw materials and preparation methods may have played a significant role in the development of surface characteristics that eventually dictated catalyst activity and stability as well.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 9, May 2009, Pages 4057–4064
نویسندگان
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