The aromatization reaction over ZnNi/H ZSM -5, by the microwave heating and conventional heating methods, had been undertaken using n -hexane as the source under the conditions of different temperatures.Compared with the condition of conventional heating , the active centers of B acid and L acid in the ZnNi/ZSM -5 were excited selectively by microwave , the strength of B acid and L acid were enhanced , which accelerated the aromatization reaction, improved the yield of BTX.It is fitting that the aromatization reacted at 450 ℃ by microwave heating the yield and selectivity of BTX is increased about 5 % and 4 % respectively , dealkylation of aromatics can be promoted also , which effects the distribution of aromatics, and results in the increase of benzene and to luene , but decrease of xylene and ethylbenzene in the products .With the increasing of reaction temperature , cracking reaction is strengthened , however , the yields of C-6 and BTX still are more than that by the conventional heating .
2007, 27 (2):
24-26.