Health & Environmental Research Online (HERO)


Print Feedback Export to File
6275615 
Book/Book Chapter 
Novel rhenium based catalysts for direct dehydroaromatization of methane with CO/CO2 towards ethylene and benzene, catalysis and XAFS/TG/DTA/MASS characterization 
Ichikawa, M; Issoh, K; Ohnishi, R; Wang, L 
2000 
1 
Studies in surface science and catalysis
ISSN: 0167-2991 
Elsevier 
Studies in Surface Science and Catalysis 
130 
3603-3608 
The novel rhenium catalysts Re/HZSM-5 were studied for the catalytic performances of dehydrocondensation of methane towards C2-hydrocarbons and benzene at 1–3 atm and 873–1023K. EXAFS and TG/DTA/Mass studies suggest that the metallic Re highly dispersed on HZSM-5 zeolite is an active phase for the reaction in contrast to Mo carbide for Mo/HZSM-5 catalyst. The addition of a few % of CO/CO2 to methane feed results in the stable catalytic performances owing to the effective suppression of coke formation on Re/HZSM-5 catalysts. It was suggested that the bifunctional catalysis consisting of methane dehydrogenation on Re and oligomerization of C2-intermediates on HZSM-5 having proper pore-sizes around 5is for the dehydrocondensation of methane towards benzene. 
Mendioroz, Sagrario