کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
63550 48223 2016 10 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Application of zirconium modified Cu-based oxygen carrier in chemical looping reforming
ترجمه فارسی عنوان
استفاده از حامل اکسیژن مبتنی بر مس اصلاح شده با زیرکونیوم در مواد شیمیایی اصلاح حلقه
کلمات کلیدی
اصلاح حلقه شیمیایی ؛ استفاده از CO2؛ حامل اکسیژن؛ تولید هیدروژن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Different copper based Zr modified oxygen carriers are investigated in CO2-CLR process.
• The presence of ZrO2 in the support structure inhibited the deposition of coke.
• The 15Cu/20Zr-Al oxygen carrier exhibited high stability and activity in CO2-CLR.
• Complete methane conversion is achieved at relatively low temperature.

The modification of alumina support of copper-based oxygen carrier using zirconium oxide is investigated in this study. The CO2 modified chemical looping reforming (CO2-CLR) process is applied to evaluate the synthesized oxygen carriers at different reduction temperatures (550–750 °C). The presence of ZrO2 in the support structure of oxygen carrier inhibited the deposition of coke on the samples. The results revealed that the addition of 20% zirconium oxide could effectively improve the efficiency of oxygen carrier at different reduction temperatures. In addition, the effect of CH4/CO2 ratio in feed (0.5–3) and copper loading percentage (10, 15, 20, 25, 30) are investigated on methane and carbon dioxide conversion, hydrogen production yield and CO/CO2 ratio. The synthesized oxygen carriers were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), BET and energy dispersive X-ray spectroscopy (EDX) techniques. The 15Cu/20Zr-Al as optimized oxygen carrier exposed a mesoporous structure with a high surface area of 315.9 m2 g−1. The redox results revealed that 15 Cu/20 Zr-Al oxygen carrier exhibited the highest activity and showed about 99.2% CH4 conversion at a low temperature of 650 °C. This oxygen carrier revealed high stability for CH4 and CO2 conversion, hydrogen production yield and CO/CO2 ratio during 16 redox cycles at 650 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of CO2 Utilization - Volume 14, June 2016, Pages 112–121
نویسندگان
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