Abstract
Effective aromatization processes for converting light hydrocarbons to BTX aromatics could improve the availability of aromatics as chemicals and high octane gasoline-blending components. To this end, M2 forming offers a potential new route. The process can convert olefins and paraffins to aromatics. The aromatic yields are only limited by the stoichiometric constraint imposed by the hydrogen content of the feed and the products. The heart of this process is the HZSM-5-type catalyst. The process operates in the cyclic mode at about 538 /sup 0/C and 1-20 atm. The reactions involved in the M2 forming process are complex, consecutive, acid-catalyzed reactions, including (1) conversion of olefinic and paraffinic molecules to small olefins via acidic cracking and hydrogen-transfer reactions, (2) formation of C/sub 2/-C/sub 10/ olefins via transmutation, oligomerization, cracking, and isomerization reactions, and (3) aromatic formation via cyclization and hydrogen transfer.
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