Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 628-629, Issue -, Pages 350-357Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2018.01.316
Keywords
light olefins; Fe/ZSM-5; Catalytic pyrolysis; Biomass
Categories
Funding
- National Natural Science Foundation of China [51506071, 51676081]
- China Postdoctoral Science Foundation [2016M602295]
- Natural Science Foundation of Shenzhen [JCYJ20170307172032901]
- Fundamental Research Funds for the Central Universities [2015ZDTD035]
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Light olefins are the key building blocks for the petrochemical industry. In this study, the effects of in-situ and exsitu process, temperature, Fe loading, catalyst to feed ratio and gas flow rate on the olefins carbon yield and selectivity were explored. The results showed that Fe-modified ZSM-5 catalyst increased the olefins yield significantly, and the ex-situ process was much better than in-situ. With the increasing of temperature, Fe-loading amount, catalyst to feed ratio, and gas flow rate, the carbon yields of light olefins were firstly increased and further decreased. The maximum carbon yield of light olefins (6.98% C-mol) was obtained at the pyrolysis temperature of 600 degrees C, catalyst to feed ratio of 2, gas flow rate of 100 ml/min, and 3 wt% Fe/ZSM-5 for cellulose. The selectivity of C2H4 was more than 60% for all feedstock, and the total light olefins followed the decreasing order of cellulose, corn stalk, hemicelluloses and lignin. (C) 2018 Elsevier B.V. All rights reserved.
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