TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Forms: Form of graphite is in strips, or sheets, and nitrogen dioxide nanohorns-graphite nano composite is porous network. Preferred Components: Catalyst has transition metal nano cluster containing platinum (Pt), ruthenium (Ru), palladium (Pd), gold (Au), rhodium (Rh), iridium (Ir), copper (Cu), and/or oxygen (O), preferably platinum, ruthenium, palladium, rhodium, and/or iridium, and transition metal alloy nano cluster containing platinum (Pt), ruthenium (Ru), palladium (Pd), gold (Au), rhodium (Rh), iridium (Ir), copper (Cu), and/or oxygen (O), preferably platinum, ruthenium, palladium, rhodium, and/or iridium. Transition metal soluble salt, or acid is platinum (Pt), ruthenium (Ru), palladium (Pd), gold (Au), rhodium (Rh), iridium (Ir), copper (Cu), and/or oxygen (O), preferably platinum, ruthenium, palladium, rhodium, and/or iridium. Alcohol is 1-8 carbon-containing monohydric alcohol, 1-8 carbon-containing dihydric alcohol, 1-8 carbon-containing trihydric alcohol, 1-8 carbon-containing diol monomethoxy or ethoxy derivative, and/or 1-8 carbon-containing triol monomethoxy or ethoxy derivative. Inert atmosphere in separating step has hydrogen, nitrogen, and/or helium. Water-miscible organic solvent is methanol, ethanol, acetone, acetonitrile, dimethyl formamide, and/or tetrahydrofuran. Preferred Compositions: Amount of transition metal, or transition metal alloy in catalyst is 0.1-80%, and mass ratio transition metal:transition metal alloy nano cluster is 1:0.01-100. Amount of water in alcohol and water mixture is 0.1-50 vol.%. Concentration of transition metal solution is 0.01-100 g/L, preferably 0.1-30 g/L. Molar ratio of alkali metal, or alkaline-earth metal hydroxide to transition metal soluble salt, or acid is 3-30. Mass ratio of transition metal, or metal alloy nano cluster to nano composite is 1:(0.001-0.80). Amount of water in water-miscible organic solvent is 0-90%. Preferred Parameters: Diameter of transition metal, or transition metal alloy nano cluster is 0.5-20 nm. Preferred Conditions: Heating temperature is 353-673 K, preferably 373- 473 K. Heating time is 0.5-100 hours. Pressure, temperature, and time conditions of separation step are 103- 105 Pa, 298-1073 K, preferably 353-773 K, and 0.5-100 hours, respectively.