Title of article :
THE ROLE OF METAL ION ON PHYSIOCHEMICAL PROPERfiES OF METALALUMINATF.S PREPARED BY IMPREGNATION METHOD
Author/Authors :
Komeili, S Chemical Engineering Department - Iran University of Science and Technology, Thhran , Takht Ravanchi, M National Petrochemical Company - Petrochemical Research and Thchnology Company, Thhran , Taeb, A Chemical Engineering Department - Iran University of Science and Technology, Thhran
Abstract :
A series of MA1204 (M=Ni, Zn, and Cu) aluminates were prepared by using impregnation method; the metal content of the products was ranged between 5wt% to 25wt% The samples were characterized by x-ray diffraction (XRD), Brunauer Emmett Teller (BET) surface area, NH3 temperature-programmed desorption (NH3TPD), and
inductively coupled argon plasma (ICP).
The specific suiface areas of zinc, nickel and copper aluminates were in the ranges of 47-77m2fg. 63-87m2/g and 1.6- 3m2fg, respectively. The surface acidity decreased in the order of CuAl104<< NiAl20,r ZnAl204<< Al103. By increasing the amount of metals in the samples, the number of acidic sites decreased, hut their strength did not signifzcantly change. Ni-aluminates havefewer acidic sites than Zn-aluminates, particularly in strong acid sites.
Keywords :
Aluminate , Impregnation , Acidity , Catalyst Support
Journal title :
Astroparticle Physics
