Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide The influence of gadolinium (Gd) on nickel (Ni)-based catalysts for CO 2 methanation was studied. By varying the Gd content at a fixed Ni loading, we observed an enhancement in the CO 2 methanation TOF from 0.009 to 0.03 s –1 with increasing Gd content, attributed to improved CO 2 adsorption and increased metal reducibility, while the site density remained largely unchanged. From in situ FTIR studies, a possible reaction mechanism for CO 2 methanation on Gd-modified Ni catalysts was proposed. The monometallic nickel catalyst exhibited strong CO adsorption, leading to catalyst deactivation over time, while in the presence of Gd, a CO + formate pathway was observed. This change in the likely mechanism due to the presence of Gd suppressed strong CO adsorption and improved catalyst stability over time.
Source: ACS Catalysis
Authors: Majed Alam Abir, Rachel E. Phillips, Jakob Klug, Gia Monte, Joseph Harrah, Kaden Schreiber, Madelyn R. Ball
Institutions: West Virginia University, Michigan State University
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
SDG: Climate action
Open Access status: hybrid
Estimated APC paid: $4,500
Awards: G2727307100, G4787329949
OpenAlex ID: W4416721390