A process of modifying a zeolite catalyst to produce a modified zeolite
catalyst wherein the modified zeolite catalyst has blocked pore sites. An
oxygenated feed is flowed over the modified zeolite catalyst, wherein the
oxygenated feed comprises hydrocarbons, methanol and dimethyl ether or a
mixture thereof. The hydrocarbons, methanol and dimethyl ether in the
oxygenated feed react with the modified zeolite catalyst to produce
cyclic hydrocarbons, wherein the cyclic hydrocarbons produced has less
than 10% durene and a median carbon number is C8.