Catalytic properties of Al-MCM-41 mesoporous molecular sieves for isomerization of polycyclic hydrocarbons

Al-MCM-41 mesoporous molecular sieves were synthesized at ambient temperature.The framework and surface structure of the synthesized samples were characterized by XRD,N2-adsorption/desorption isotherms and FT-IR.The experimental results showed that the synthesized Al-MCM-41 molecular sieves had higher catalytic activity for isomerization of endo-tetrahydrodicyclo-pentadiene(endo-TCD) to exo-tetrahydrodicyclo-pentadiene(exo-TCD) and adamantane.Loading of inorganic acid on surface of Al-MCM-41 improved activity of the synthesized molecular sieves and raised the yield of adamantane.Loading of Pt on surface of H+/Al-MCM-41 through chemical reduction had little effects.