The conversion of biomass to light olefins on Fe-modified ZSM-5 catalyst: Effect of pyrolysis parameters

Shihong Zhang; Mingfa Yang; Jingai Shao; Haiping Yang; Kuo Zeng; Yingquan Chen; Jun Luo; Foster A Agblevor; Hanping Chen

doi:10.1016/j.scitotenv.2018.01.316

The conversion of biomass to light olefins on Fe-modified ZSM-5 catalyst: Effect of pyrolysis parameters

Sci Total Environ. 2018 Jul 1:628-629:350-357. doi: 10.1016/j.scitotenv.2018.01.316. Epub 2018 Feb 20.

Authors

Shihong Zhang¹, Mingfa Yang¹, Jingai Shao², Haiping Yang¹, Kuo Zeng³, Yingquan Chen¹, Jun Luo¹, Foster A Agblevor⁴, Hanping Chen⁵

Affiliations

¹ State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
² Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 523000, China. Electronic address: jashao@hust.edu.cn.
³ Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
⁴ Department of Biological Engineering, Utah State University, Logan 84322, USA.
⁵ State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

PMID: 29453172
DOI: 10.1016/j.scitotenv.2018.01.316

Abstract

Light olefins are the key building blocks for the petrochemical industry. In this study, the effects of in-situ and ex-situ 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°C, catalyst to feed ratio of 2, gas flow rate of 100ml/min, and 3wt% 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.

Keywords: Biomass; Catalytic pyrolysis; Fe/ZSM-5; Light olefins.