TY - JOUR ID - 20158 TI - Non-oxidative methane aromatization by bimetallic (La, Co, Pd and Pt) M-Zn/HZSM-5: Impact of propane addition JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Moghimpour Bijani, Parisa AU - Sohrabi, Morteza AU - Sahebdelfar, Saeed AU - Gholidoust, Abedeh AD - Catalyst Research Group, Petrochemical Research and Technology Company, National Petrochemical Company AD - Chemical Engineering Department, Amirkabir University of Technology AD - Department of Civil and Environmental Engineering, University of Alberta, Edmonton Y1 - 2018 PY - 2018 VL - 25 IS - 3 SP - 1423 EP - 1433 KW - Methane KW - Propane KW - Aromatization KW - Zn-modified HZSM-5 KW - Promoter DO - 10.24200/sci.2018.5050.1062 N2 - The non-oxidative aromatization of methane was studied over M-Zn/HZSM-5 (M=La, Co, Pd, and Pt) catalysts using propane as a co-reactant. The catalysts were characterized by BET, SEM, NH3-TPD and XRD techniques. Catalytic tests were performed in a fixed-bed reactor at 823 K, using a mixture of methane, propane, and nitrogen with ratio of 6/1/1.3, respectively. Propane conversion was above50% and remained stable in the first 12 hours on stream; however, the methane conversion rapidly dropped from a high of about 10% to zero within 4 hours, implying the absence of a stoichiometric reaction between the reactants. Both zinc and the second metal (M) had a beneficial effect on aromatic selectivity and Pt-Zn/HZSM-5 exhibited the highest aromatic yields and catalyst stability. The results of the present study showed that co-feeding of methane with propane cannot successfully induce methane to participate in aromatization reactions. UR - https://scientiairanica.sharif.edu/article_20158.html L1 - https://scientiairanica.sharif.edu/article_20158_2fe52b843885531d9a887ca7e5ec7bed.pdf ER -