Improving hydrocarbon yield via catalytic fast co-pyrolysis of biomass and plastic over ceria and HZSM-5: An analytical pyrolyzer analysis

Kuan Ding; Aoxi He; Daoxu Zhong; Liangliang Fan; Shiyu Liu; Yunpu Wang; Yuhuan Liu; Paul Chen; Hanwu Lei; Roger Ruan

doi:10.1016/j.biortech.2018.07.108

Improving hydrocarbon yield via catalytic fast co-pyrolysis of biomass and plastic over ceria and HZSM-5: An analytical pyrolyzer analysis

Bioresour Technol. 2018 Nov:268:1-8. doi: 10.1016/j.biortech.2018.07.108. Epub 2018 Jul 21.

Authors

Kuan Ding¹, Aoxi He², Daoxu Zhong³, Liangliang Fan⁴, Shiyu Liu¹, Yunpu Wang⁵, Yuhuan Liu⁵, Paul Chen¹, Hanwu Lei⁶, Roger Ruan⁷

Affiliations

¹ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, St. Paul, MN 55108, United States.
² Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, St. Paul, MN 55108, United States; Key Laboratory of Resource Clean Conversion in Ethnic Regions of Education Department of Yunnan, Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan, Yunnan Minzu University, Kunming 650500, PR China.
³ Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu 210036, China.
⁴ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, St. Paul, MN 55108, United States; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China.
⁵ Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China.
⁶ Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, United States.
⁷ Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave, St. Paul, MN 55108, United States; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China. Electronic address: [email protected].

PMID: 30064033
DOI: 10.1016/j.biortech.2018.07.108

Abstract

The excessive oxygen content in biomass obstructs the production of high-quality bio-oils. In this work, we developed a tandem catalytic bed (TCB) of CeO₂ and HZSM-5 in an analytical pyrolyzer to enhance the hydrocarbon production from co-pyrolysis of corn stover (CS) and LDPE. Results indicated that CeO₂ could remove oxygen from acids, aldehydes and methoxy phenols, producing a maximum yield of hydrocarbons of 85% and highest selectivity of monocyclic aromatics of 73% in the TCB. The addition of LDPE exhibited a near-complete elimination of oxygenates, leaving hydrocarbons as the overwhelming products. With increasing LDPE proportion, the yield of aliphatics and the selectivity of BTX kept increasing. An optimum H/C_eff of 0.7 was superior to that reported in literature. Mechanisms consisting of deoxygenation, Diels-Alder reactions, hydrocarbon pool and hydrogen transfer reactions were discussed extensively. Our findings provide an efficient method to produce high-quality biofuels from renewable biomass resources.

Keywords: Catalytic fast pyrolysis; CeO(2); HZSM-5; Tandem catalytic bed; Upgraded biofuel.

MeSH terms

Biofuels*
Biomass
Catalysis
Hot Temperature
Hydrocarbons / chemistry*
Plastics*

Substances

Biofuels
Hydrocarbons
Plastics