Work

Ni/CeO2 catalyst with La and Zr additives for improved low-temperature CO2 methanation efficiency

Year: 2024

Type: article

Abstract: Fossil fuel burning and other human activities have contributed to the rising carbon dioxide concentration in the atmosphere, causing serious environmental problems. In this research, a CO 2 utilization strategy involving the addition of La and Zr to Ni/CeO 2 catalysts to obtain a high methane yield via CO 2 methanation at low temperatures was investigated. The catalysts were prepared via solution combustion with citric acid, and catalytic activity was evaluated in a quartz reactor from 175–350 °C at 0.1 MPa with a space velocity of 60000 mL/h·g cat . At 275 °C, the Zr and La-modified catalysts achieved higher methane yields than undoped Ni/CeO 2 . The Ni/Ce 0.5 La 0.5 O 2 catalyst showed the highest methane yield of 49 % at 275 °C due to its larger surface area, greater oxygen vacancy content, and higher Ni dispersion on the support. These changes led to greater reaction efficiency, highlighting the potential of La-doped Ni/CeO 2 for low-temperature CO 2 methanation.

Source: Results in Engineering

DOI: 10.1016/j.rineng.2024.103795

Authors: Pattanapon Kaisook, Pakpoom Athikaphan, Supinya Nijpanich, Taketoshi Minato, Sutasinee Neramittagapong, Arthit Neramittagapong

Institutions: Khon Kaen University, Synchrotron Light Research Institute, National Institutes of Natural Sciences, Institute for Molecular Science

Language: English

Topic: Catalysts for Methane Reforming

Subfield: Catalysis

Field: Chemical Engineering

Domain: Physical Sciences

SDGs: Climate action, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,490