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 1

Tetrahedral (a) and rhombus (b) structures of the Cu4 cluster. All distances are given in Å.
(a)
(b)