کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6657122 461677 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantification of produced hydrogen in a cyclic water gas shift process with Mo stabilized iron oxide
ترجمه فارسی عنوان
اندازه گیری هیدروژن تولید شده در یک فرایند تغییر چرخه آب چرخه با اکسید آهن است
کلمات کلیدی
تغییر چرخه آب، فرآیند آهن بخار، حلقه شیمیایی ثبات، هیدروژن،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Contaminant free hydrogen can be produced by repeated reduction-oxidation cycles of modified iron oxide material in a fixed bed reactor. Fe2O3-Ce0.5Zr0.5O2 mixed oxide was synthesized by urea hydrolysis, impregnated with Mo (1-5 wt.%), and thermally calcinated in air after the Mo impregnation. The influence of the synthesis method and the Mo addition was investigated by means of X-ray diffraction (XRD), temperature programmed reduction (TPR), scanning electron microscopy (SEM) and BET surface area. In the present study, the material stability was investigated over 200 repeated redox-cycles at 750 °C, and a highly stabilized operation and constant hydrogen generation was observed after about 30 to 40 cycles. The quantification of produced hydrogen attained during the steam oxidation showed a partial utilization of the theoretically maximal H2 capacity of the applied iron oxide material. Approximately 4.2 to 4.7 mmol hydrogen per gram of initially loaded material (Fe2O3-Ce0.5Zr0.5O2) was generated during a steam treatment of the reduced material. The experimentally obtained H2 is 30 to 34% of the maximally achievable amount of hydrogen.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 128, December 2014, Pages 36-42
نویسندگان
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