Journal of Liaoning Petrochemical University
Catalytic Synthesis of Cyclohexanone 1 , 2 -Propanediol Ketal With Zr(SO 4) 2 /γ-Al 2O 3  Solid Acid
GAO Wen -y i,REN Li -g uo
Journal of Liaoning Petrochemical University . 2007, (2): 32 -34 .