期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 6, 页码 2297-2307出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ee01230d
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资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001004]
- Defense Advanced Research Projects Agency through the Strategic Technology Office [BAA 08-07]
- National Basic Research Program of China (973 Program) [2010CB732206]
- National Natural Science Foundation of China [51076031]
- China Scholarship Council
- Scientific Research Foundation of Graduate School of Southeast University
- Energy Frontier Research Center
- Emerging Frontiers & Multidisciplinary Activities
- Directorate For Engineering [0937895] Funding Source: National Science Foundation
Catalytic conversion of ten biomass-derived feedstocks, i.e. glucose, sorbitol, glycerol, tetrahydrofuran, methanol and different hydrogenated bio-oil fractions, with different hydrogen to carbon effective (H/C-eff) ratios was conducted in a gas-phase flow fixed-bed reactor with a ZSM-5 catalyst. The aromatic + olefin yield increases and the coke yield decreases with increasing H/C-eff ratio of the feed. There is an inflection point at a H/C-eff ratio = 1.2, where the aromatic + olefin yield does not increase as rapidly as it does prior to this point. The ratio of olefins to aromatics also increases with increasing H/C-eff ratio. CO and CO2 yields go through a maximum with increasing H/C-eff ratio. The deactivation rate of the catalyst decreases significantly with increasing H/C-eff ratio. Coke was formed from both homogeneous and heterogeneous reactions. Thermogravimetric analysis (TGA) for the ten feedstocks showed that the formation of coke from homogeneous reactions decreases with increasing H/C-eff ratio. Feedstocks with a H/C-eff ratio less than 0.15 produce large amounts of undesired coke (more than 12 wt %) from homogeneous decomposition reactions. This paper shows that the conversion of biomass-derived feedstocks into aromatics and olefins using zeolite catalysts can be explained by the H/C-eff ratio of the feed.
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