| 초록 |
The transformation of lower alkanes to aromatic hydrocarbons evoke a great interest in petrochemical industries in the view points of value addition to aromatics. Even though UOP/BP already commercialized so-called Cyclar Process from LPG fraction to aromatics, still it suffers from the large amount of coke formation and poor catalyst stability. Ga- and Zn-ZSM-5 have been proved to show good aromatization activity as Lewis and Bronsted catalyst having MFI pore structure. However, active sites and mechanism are not well illustrated yet. Aromatization of alkane should accompany with dehydrogenation step not only at the initial stage but also cyclization into aromatics. Here, we are challenging to use CO2 as a vector gas to expect to reduce the coke formation through the reverse Boudouard reaction (C+CO2→2CO) and enhance the dehydrogenation activity through reverse water gas shift reaction (CO2+H2→CO+H2O). |
