Semnan University Press Journal of Heat and Mass Transfer Research 2345-508X 9 2 2022 11 01 The Synthesis of Lanthanum Oxide/Ni Catalyst on the CMK-3 for the CO2 reforming of CH4 ساخت کاتالیست اکسید لانتانیوم/ نیکل بر روی مزوپور کربن برای ریفرمینگ گاز متان 279 288 7731 10.22075/jhmtr.2023.25371.1367 EN Abass Kakoo Facualty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran Mardali Yousefpor Facualty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran 0000-0002-7240-0877 Journal Article 2021 11 28 The catalysts with valve metals had been modified to use in the reforming process. Furthermore, there is a trend to the cheaper materials due to the deactivation and high price of the mentioned catalysts. In this case, at the present research work, the Nickel/CMK-3 catalysts with La₂O₃ as the promoter were synthesized by an impregnation method with 3 wt. % of La₂O₃. Also, the Nickel catalysts/CMK-3 and Nickel catalysts-La₂O₃/CMK-3 were characterized by N₂ adsorption-desorption, X-ray diffraction (XRD), Transmission electron microscopy (TEM), Field emission scanning electron microscopy<br />(FE-SEM), Temperature programmed reduction (TPR), and the performance of the catalysts for CO₂ reforming of CH₄. In addition, the temperature programmed reduction (TPR) technique was selected to evaluate the catalyst properties for the CO₂ reforming of CH₄. In final, the obtained results demonstrated that the formation of amorphous mesoporous Carbon with NiO nanoparticles inside the channels of the supported base and also the Lantana oxide addition induced better Nickel oxide dispersion and increased the interaction of the catalyst particles with support. As a result, the Nickel catalysts supported on the Carbon mesoporous has shown enough activity for the CO₂ reforming of CH₄ at 650 ^ºC. However, the mentioned samples were deactivated due to Carbon oxidation according to the TGA results. Therefore, the addition of La₂O₃ with 3 wt. % as a promoter improved the catalytic activity up to 57% and enhanced the catalytic stability at a duration time of 2 hr. https://jhmtr.semnan.ac.ir/article_7731_36039e6008d2bab35f89bbf123179c1d.pdf