y Vahidshad - M.Sc. Student, School of Metallurgy and Materials Engineering, University of Tehran
m Akbari Baseri - Engineering Research Institute, Tehran, Iran
h Abdizadeh - School of Metallurgy and Materials Engineering, University of Tehran
H. R. Baharvandi - Malek-Ashtar University of Technology, Tehran, Iran

A most promising solution as alternative energy source is hydrogen. Hydrogen ideally produces only water during combustion which makes it an interesting alternative for decreasing CO2 emission. Generating electricity by chemical process, combining hydrogen and oxygen to form water, produces no emissions at all [1]. Finer precursor powders give rise to larger specific areas in catalyst for high produce of hydrogen [1]. In addition, hydrogen is used in large quantities in the chemical industry [2]. Several methods have been developed to compare CuO/ZrO2 nanoparticles such as sol-gel method [3], precipitation method [4], microemulsion method [5], template method, and so on. Sol-gel route is a promising method to synthesis nanometer-sized particles. The advantages of using zirconia as a catalyst support is to be a unique metal oxide which explicitly possesses special chemical properties such as: (i) it interacts strongly with the active phase; (ii) it possesses high thermal stability and is more chemically inert than classical oxides; (iii) it is the only metal oxide which may possess all four chemical properties; namely acidity, basicity, reducing ability and oxidizing ability [6]. This research work has proposed and verified that the calcination temperature, pH value, catalyst nature and concentration, H2O/precursor molar ratio, chelating agent, aging temperature strongly influence on the morphology as well as interaction between the active species and the support