a, Cu nanoparticles are used as the catalysts for methanol synthesis. Develop a synthetic route to make Cu nanoparticles using Cu acetate as the precursor. Write down all reaction equations and describe the synthetic details. [6] b, Will the Cu nanoparticle be stabilized in the 1) HCl solution and 2) FeCl3 solution? Write down your answer and discuss the reasons. [6] c, Methanol is synthesized from CO and H2. Discuss how Cu can catalyse this reaction and how Cu reacts with CO and H2. [6] d, ZnO and Al2O3 is added into the reaction to help the Cu catalyst in the methanol synthesis. Discuss the major side reactions of the catalysts. Will the catalyst undergo chemical changes? [6]