In this work the cation effect of ion-exchanged y type Zeolite catalyst in the case of cracking and or isomerization reactions of n-pentane were investigated.
Pure n-pentane was converted into various lower hydrocarbons under the conditions of below 2 atm, and 400 ℃ to 600 ℃ through isomerization and cracking reactions.
According to a conventional method, the order of catalytic reactivity of the ion-exchanged catalysts for both reactions were confirmed as following ;
ⅰ） Iomerization reactions, Cr⁺⁺³-y>Mg⁺⁺-y, Ca⁺⁺-y>Fe⁺⁺-y, Mn⁺⁺-y>Cd⁺⁺-y, Cu⁺⁺-y, Zn⁺⁺-y>Al⁺³, H⁺-y, Mg⁺⁺-y, Co⁺⁺-y
ⅱ） Cracking, reactions Ni⁺⁺-y, Cd⁺⁺-y>Ca⁺⁺-y, Cr⁺³-y, Zn⁺⁺-y, Mn⁺⁺-y>Fe⁺⁺-y Cu⁺⁺-y, Co⁺⁺y, Mg⁺⁺-y, H⁺-y, Al⁺³-y, Hg⁺⁺-y