TITLE:
Methane Steam Reforming on Supported Nickel, Effect of Nickel Content for Product Hydrogen
AUTHORS:
Akila Belhadi, Souhila Boumaza, Amar Djadoun, Mohamed Trari, Ouiza Cherifi
KEYWORDS:
Nickel Catalysts, ZnO, Methane Steam Reforming, Hydrogen
JOURNAL NAME:
Open Journal of Physical Chemistry,
Vol.6 No.2,
May
5,
2016
ABSTRACT: The steam reforming of methane over NiO/ZnO mixed oxides with different
nickel contents was studied. Solids to x% Ni/ZnO (x = 4 and 10%) were deposited
on ZnO by impregnation from nickel nitrate solution; after vaporization the
solid is calcined at 500°C for 6 h. The catalysts were characterized by X-ray diffraction (XRD) and
BET method, scanning electron microscopy (SEM) and temperature programmed
reduction (TPR). The XRD patterns revealed the NiO phase for all calcined
catalysts. The chemical analysis confirmed the theoretical values of nickel.
The catalysts were pre-treated under hydrogen at 500°C in situ, overnight before
testing for the steam reforming of methane reaction (CH4/H2O/Ar
= 10/10/80) in the temperature range (475°C - 650°C) under atmospheric pressure. The activities of both catalysts were
investigated in a fixed-bed reactor for the Methane Steam Reforming (MSR)
reaction. Globally, it was shown that the catalyst 10% nickel content has an
important effect on the catalytic performances of solids i.e. the better results of hydrogen production were obtained with
10% wt. Ni/ZnO (28 ′ 10-3 mol/g catalyst).