Research Article
Study on the Adsorption and Activation Behaviours of Carbon Dioxide over Copper Cluster (Cu4) and Alumina-Supported Copper Catalyst (Cu4/Al2O3) by means of Density Functional Theory
Figure 2
The optimized structure of Cu4/Al2O3 systems (red, oxygen atom; grey, alumina atoms; brown, copper atoms). Key distances are given in Å.