Abstract
【Double bond migration of butene-2 to butene-1 over ${\eta}$ -alumina was investigated. The effects of calcination temperature on catalytic properties were analyzed by applying BET surface area, XRD, $NH_3$ -TPD, and FT-IR of adsorbed pyridine techniques. The highest activity of the ${\eta}$ -alumina catalyst calcined at $600^{\circ}C$ could be attributed not only to the highest amount of weak and medium strength acid sites, but also to the highest ratio of medium to weak strength Lewis acid sites.】
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