The main objective of the research is to synthesize ?alumina with bimodal pore size distribution and reduced diffusion resistance in catalytic reaction. The solid template (polystyrene beads or vanadium oxide nanotubes) will be blended into boehmite sol to create desired pores in the -alumina after calcinations. Using the centrifugal force or filtration effect, the template will be self-assemble in the boehmite sol. Primary pore size distribution originally exists in the boehmite sol and the secondary pore size distribution is created by removing the solid templating units during calcinations. Creating secondary pores is tremendously important as the catalytic process occurs more efficiently in a material with bimodal pore size distribution. This is because the secondary pores reduce the diffusion limitations were to exist in a catalyst with unimodal porous structure. After synthesizing and characterizing the -alumina with orderly arranged secondary pores, the ?alumina will be applied in oxidation reaction of styrene. The influence of the transition metals incorporated and their structural features on catalytic activity and product selective in styrene oxidation will be studied in the final stage of the research.