کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7705341 1497293 2018 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effectiveness factor correlations from simulations of washcoat nickel catalyst layers for small-scale steam methane reforming applications
ترجمه فارسی عنوان
همبستگی فاکتورهای اثربخشی از شبیه سازی لایه های کاتالیزور نیکل شستشو برای برنامه های رفاهی داغ متان بخار
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
In this paper, the effectiveness factors of Ni/MgAl2O4 washcoat catalyst layers under steam methane reforming (SMR) conditions relevant to small-scale hydrogen production systems (1-3 bar pressure, 600-800 °C temperature, and 2-4 steam-to-carbon ratio) are numerically investigated. The effects of the washcoat properties, including the layer thickness (20-80 μm), the mean pore diameter (10-40 nm), and the volume-specific catalyst surface area (1.1-3.3 × 107 m2/m3), are also considered. The simulation is conducted by fully considering the intrinsic reaction kinetics (Xu and Froment model) and multicomponent mass diffusion (Maxwell-Stefan equation). The numerically obtained effectiveness factors are presented as a function of the methane conversion ratio and effective Thiele moduli, and simple correlation equations are proposed for easy evaluation of the effectiveness factors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 32, 9 August 2018, Pages 15398-15411
نویسندگان
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