The Effect of Calcination Temperature on Various Sources of ZrO2 Supported Ni Catalyst for Dry Reforming of Methane

مقال فى مجلة

2022

تم النشر فى: https://www.webofscience.com/wos/woscc/full-record/WOS:000785072300001

Dry reforming of methane (DRM) over an Ni-based catalyst is an innovative research
area due to the growing environmental awareness about mitigating global warming gases (CH4
and CO2
) and creating a greener route of synthesis. Herein, 5% Ni supported on ZrO2 obtained
from various sources was prepared by the impregnation method. The catalysts were calcined at
600, 700, and 800 ◦C. Furthermore, Ni-RC stabilized with MgO, SiO2
, TiO2
, and Y2O3 were tested.
Characterization techniques employed comprise the N2 physisorption, infrared spectroscopy, Raman,
thermogravimetric analysis, XRD, and TEM. The results of the present study indicated that the ZrO2
support source had a profound effect on the overall performance of the process. The best catalyst
Ni-RC gave an average conversion of CH4 and CO2 of 61.5% and 63.6% and the least deactivation
of 10.3%. The calcination pretreatment differently influenced the catalyst performance. When the
average methane conversion was higher than 40%, increasing the calcination temperature decreased
the activity. While for the low activity catalysts with an average methane conversion of less than 40%
the impact of the calcination temperature did not constantly decrease with the temperature rise. The
stabilization of Ni-RC denoted the preference Y2O3 stabilized catalyst with average values of CH4
and CO2 conversion of about 67% and 72%, respectively. The thorough study and fine correlation
will be advantageous for technologically suitable Ni-15Y-RC catalysts for DRM.

• اسم الناشر: catalysts