Transition metal promoted amorphous aluminium phosphate (M(0.05)Al(0.95)PO(4)) samples were prepared (by precipitation and calcination) and characterized by chemical analysis, TG, XRD, nitrogen adsorption-desorption isotherms, surface acidic-basic sites, and oxidizing-reducing sites, Chemical analysis shows that the P/(Al + M) ratio in all the cases is slightly less than 1. Nitrogen adsorption-desorption studies at liquid nitrogen temperature shows that all the samples have high specific surfaces and possess both micro as well as meso pores in the range 2.6 to 3.8 mm, The acidic-basic and oxidizing-reducing sites on the surface of amorphous aluminium phosphate increased with the addition of transition metals. Surface area, acid-base, and oxidizing-reducing properties increased slightly with an increase in calcination temperature up to 600 degrees C, then decreased to low values at 800 degrees C.