A series of CZZ catalysts were prepared via the urea–nitrate
combustion method with urea ranging from 150% to 40% of stoichiometric amount and tested for the hydrogenation of CO2to methanol. The fuel-deficient samples were found to have favorable
characteristics such as small grain size, large surface area and
low reduction temperature. The optimal CZZ catalyst (50-CZZ)
exhibits excellent activity and remarkable selectivity for the synthesis of methanol from CO2hydrogenation. The urea–nitrate combustion method, therefore, appears to be a simple, fast and
effective method for the preparation of CZZ catalysts.