the ratio of amount of coke deposition of benzene, ethyl benzene and diethyl ben- zene on AF-5 zeolite was 1:1.6:2 under the same experimental conditions.

• 在相同的试验条件下测得苯、乙苯及二乙苯在该催化剂上结焦量的比值为1:1.；6:2。