The synthesis of polypropylene from propylene monomer is a polymerization reaction. The balanced chemical equation for this reaction is:n C3H6 C3H6 nwhere n represents the number of propylene monomer units C3H6 that are combined to form the polypropylene polymer chain C3H6 n.The reaction conditions required to achieve a high yield of polypropylene include:1. Catalyst: The use of a catalyst is essential for this reaction to proceed at a reasonable rate. Ziegler-Natta catalysts, which are based on titanium compounds and organoaluminum compounds, are commonly used for this purpose. Metallocene catalysts are another option, providing more controlled polymerization and better control over the polymer's properties.2. Temperature: The reaction temperature should be maintained between 60-80C 140-176F for Ziegler-Natta catalysts and 30-120C 86-248F for metallocene catalysts. Higher temperatures can lead to side reactions and lower molecular weight polymers.3. Pressure: The reaction is typically carried out under high pressure, ranging from 10 to 40 atmospheres, to promote the formation of the polymer.4. Inert atmosphere: The reaction should be performed under an inert atmosphere, such as nitrogen or argon, to prevent the oxidation of the catalyst and the monomer.5. Reaction time: The reaction time depends on the desired molecular weight of the polypropylene and the efficiency of the catalyst. It can range from a few minutes to several hours.By controlling these reaction conditions, a high yield of polypropylene can be achieved.