COx-free hydrogen production by catalytic decomposition of CH4 over mesoporous magnesium aluminate supported Ni catalysts
محل انتشار: چهارمین کنفرانس هیدروژن و پیل سوختی
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 533
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شناسه ملی سند علمی:
H2FC04_076
تاریخ نمایه سازی: 13 شهریور 1396
چکیده مقاله:
Catalytic decomposition of methane is an essential process of hydrogen production and carbon nanofibers. In this work, the performance of catalysts with various Ni contents supported on mesoporous nanostructured magnesium aluminate powders was studied in catalytic decomposition of methane (CDM) for COx-free hydrogen production. The hydrogen produced can be used directly for the proton exchange membrane fuel cell (PEMFC). The supports were prepared by a surfactant free self-assembly and fast sol–gel process. This technique resulted in production of the catalysts with high surface area and mesoporous structure. The samples were characterized by XRD, BET, and SEM methods. The Ni/MgO.Al2O3 catalysts with the highest amount of Ni possessed a suitable catalytic performance with time on stream. Increasing in nickel loading led to an enhancement in conversion of methane and also the amount of accumulated carbon. The results also showed that the increase in reaction temperature decreased the diameter and the length of carbon nanofibers.
کلیدواژه ها:
نویسندگان
Ali Rastegarpanah
Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran
Fereshteh Meshkani
Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran
Mehran Rezaei
Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran