Catalytic co-aromatization of ethanol and methane
- Univ. of Calgary, Calgary, AB (Canada)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Univ. of Alberta, Edmonton, AB (Canada)
- National Institute for Nanotechnology, Edmonton, AB (Canada)
This study demonstrates the technical feasibility of simultaneously converting ethanol and methane into liquid hydrocarbons at mild reaction conditions (400 °C and 1 atm) over silver and/or zinc modified zeolite catalysts. After GC-MS analysis, it is worth noting that aromatics are the major compounds contained in the liquid product collected from the run when 1%Ag/ZSM-5, particularly after H2 pretreatment, is charged. Compared to the performance exhibited from the run with pure HZSM-5 support engaged, Ag addition into the HZSM-5 framework favors aromatics formation, which might be closely associated with better Ag dispersion and more abundance of strong surface acidic sites where aromatization might take place while Zn loading exerts a detrimental effect on the production of aromatics but promotes the ether generation possibly through dehydration reaction. Referred to that from its N2 counterpart, the increased aromatics formation of the collected liquid product when methane is present indicates that methane existence might facilitate ethanol aromatization. Moreover, combined with the increased carbon number in the formed aromatics from CH4 run when H2 run is referred and zero liquid formation from CH4-alone test as well as more prominent endothermic feature of methane run and more importantly the notably increased 13C signals in 13C NMR spectra of the liquid product collected during ethanol conversion under 13CH4 environment, all the observations suggest that methane might be activated nonoxidatively and converted into higher hydrocarbons, preferentially into aromatics if suitable catalyst is charged under the assistance of co-existing oxygenated hydrocarbon. Lastly, the reported synergetic effect could potentially lead to the more economic utilization of abundant natural gas and cellulosic ethanol.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1339508
- Report Number(s):
- NREL/JA-5100-67709
- Journal Information:
- Applied Catalysis B: Environmental, Vol. 198, Issue C; ISSN 0926-3373
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Catalytic aromatization of acetone as a model compound for biomass-derived oil under a methane environment
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journal | January 2018 |
Effect of the Si/Al ratio in Ga/mesoporous HZSM-5 on the production of benzene, toluene, and xylene via coaromatization of methane and propane
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journal | January 2019 |
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