Amorphous high surface area Al 2 O 3 /BINOL was prepared using sol-gel method. The effects of temperature on the structure and texture of alumina doped with BINOL were investigated using XRD, SEM, EDX, BET, TG/DTG, DSC and FT-IR. Also BJH was plotted to determine meso and micropore distribution. 2-octanol dehydration was performed using three prepared catalysts. Also in order to explanation of observed reactivity and selectivity and its relationship with catalyst catalysts then appropriate mechanisms were presented. 2-octanol reaction on catalysts the selectivity changed. Overally we got 1-octene, 2-octene, 3-octene, 2-ctanone which first one was dominant, octanal, dioctylether. In the quantum mechanic chemistry, calculations were performed for the ?-alumina (100) and (110) surfaces doped with BINOL. The stability of surface structures depends upon the valence electrons and the position of doping atom. Finally the most sensitive and the most insensitive location based on the charge difference and characteristics of the ion were determined. In addition 15 different posses of BINOL adsorption on ?-alumina (100) and (110) surfaces were studied to specify the best absorption manner. In this regard changes in BINOL molecule after adsorption on the surface different places were considered and it was found that BINOL’s oxygen and then hydrogen connected to oxygen have dominant effect on BINOL adsorption. In addition we probed changes in bond lengthes and angles of BINOL molecule. Our results revealed C?O and then O?H bonds are the most variable bonds of BINOL and also rotation of BINOL rings during adsorption.