کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719350 | 1497494 | 2014 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of highly stable bimetallic Ni-Cu catalyst for simultaneous production of hydrogen and fish-bone carbon nanofibers: Optimization, effect of catalyst preparation methods and deactivation
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation of highly stable bimetallic Ni-Cu catalyst for simultaneous production of hydrogen and fish-bone carbon nanofibers: Optimization, effect of catalyst preparation methods and deactivation Preparation of highly stable bimetallic Ni-Cu catalyst for simultaneous production of hydrogen and fish-bone carbon nanofibers: Optimization, effect of catalyst preparation methods and deactivation](/preview/png/7719350.png)
چکیده انگلیسی
This paper presents the preparation of highly stable nano-porous Ni-Cu catalysts for simultaneous production of COx-free hydrogen and carbon nano-fibers. The main features of this work focuses on the optimization, methods of catalyst preparation and application of an experimental model for deactivation. The fresh catalysts and the deposited carbon were characterized by SEM, TEM, XRD and Raman spectroscopy. Whatever to be the preparation methods, performance tests showed that the presence of Cu as promoter in Ni-Cu-MgO catalysts, enhanced the catalytic activity, substantially at higher temperatures with the best result obtained for Ni-Cu-MgO catalyst prepared by one step sol- gel method, reaching a hydrogen concentration of 70 vol% (160.51 mol H2/mol Ni-1 h) and a smaller value of ID/IG (less imperfection) for produced carbon nano-fibers at 670 °C. Detailed rate-based model for deactivation of catalyst was found to be dependent on the time, reaction temperature and partial pressure of methane and indicated that the reaction of deactivation could be modeled by a simple hyperbolic model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 15, 15 May 2014, Pages 7765-7779
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 15, 15 May 2014, Pages 7765-7779
نویسندگان
Nosrat Izadi, Ali Morad Rashidi, Ahmad Zeraatkar, Heshmatollah Varmazyar, Maryam Rashtchi,