Open AccessCarbon dioxide hydrogenation using Ru/YSZ promoted with low-coverage alkaline earth metals
Author(s) -
Tan Sze Yen,
Naimah Ibrahim,
Umi Fazara Md Ali,
Mohamed Kheireddine Aroua
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/864/1/012130
Subject(s) - alkaline earth metal , methanation , catalysis , ruthenium , inorganic chemistry , carbon dioxide , methane , chemistry , magnesium , selectivity , carbon fibers , electrolyte , metal , materials science , organic chemistry , electrode , composite number , composite material
Utilization of CO 2 , which is the main contributor to the global climate change is one of the means to produce useful chemicals and fuels while at the same time reduce CO 2 concentration in the atmosphere. Ruthenium (Ru) was chosen as the probe catalyst in carbon dioxide hydrogenation based on its ability to selectively enhance methanation reaction. Ru supported on YSZ solid electrolyte (Ru/YSZ) was modified with alkaline earth metal promoters i.e. calcium (Ca) and magnesium (Mg) at low coverage (0.16%). It was found that Ca-modified system is more favorable to enhance the catalytic activity and selectivity of reaction towards methane production compared to Mg-modified system, perhaps due to the higher basicity of Ca.