The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
XRD
The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
FT-IR
The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
SEM
The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
HRTEM
The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
N2-physisorption
The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
XPS
The physico-chemical properties of copper silicates were characterized by XRD, FT-IR, SEM, HRTEM, N2-physisorption, XPS and H2-TPR techniques. 
H2-TPR