The Effect of Calcination Temperature on Various Sources of ZrO<sub>2</sub> Supported Ni Catalyst for Dry Reforming of Methane

oleh: Ahmed Aidid Ibrahim, Anis Hamza Fakeeha, Mahmud Sofiu Lanre, Abdulrhman S. Al-Awadi, Salwa Bader Alreshaidan, Yousef Abdulrahman Albaqmaa, Syed Farooq Adil, Ateyah A. Al-Zahrani, Ahmed Elhag Abasaeed, Ahmed S. Al-Fatesh

Format: Article
Diterbitkan: MDPI AG 2022-03-01

Deskripsi

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 (CH<sub>4</sub> and CO<sub>2</sub>) and creating a greener route of synthesis. Herein, 5% Ni supported on ZrO<sub>2</sub> 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, SiO<sub>2</sub>, TiO<sub>2</sub>, and Y<sub>2</sub>O<sub>3</sub> were tested. Characterization techniques employed comprise the N<sub>2</sub> physisorption, infrared spectroscopy, Raman, thermogravimetric analysis, XRD, and TEM. The results of the present study indicated that the ZrO<sub>2</sub> support source had a profound effect on the overall performance of the process. The best catalyst Ni-RC gave an average conversion of CH<sub>4</sub> and CO<sub>2</sub> 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 Y<sub>2</sub>O<sub>3</sub> stabilized catalyst with average values of CH<sub>4</sub> and CO<sub>2</sub> 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.