title: Fast pyrolysis of cotton stalk biomass using calcium oxide.
abstract: We herein investigate the various roles of calcium oxide in the pyrolysis of biomass at a variant temperatures. The evolution of pyrolysis products was examined to propose the various roles of Ca at a range of temperatures and CaO addition ratios with cotton stalk on a fixed-bed reactor. We found that upon the addition of CaO, the content of ketones produced increased, while that of acidic compounds decreased. Under similar conditions, the concentration of evolved H2and CH4increased, while that of CO2decreased. Thus, variation in the CaO/biomass (Ca/B) mass ratios and pyrolysis temperatures indicated that CaO could act as a reactant, an absorbent, and a catalyst at Ca/B ratios of <0.2, >0.2, and >0.4, respectively. Moreover, at temperatures >600°C, the roles of CaO as an absorbent and a reactant were less apparent, while its role as a catalyst was enhanced.
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, PR China.
authors.forename: Xu
authors.initials: X
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, PR China.
authors.forename: Yingquan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, PR China. Electronic address: yhping2002@163.com.
authors.forename: Haiping
authors.initials: H
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, PR China.
authors.forename: Xianhua
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, 430074 Wuhan, PR China.
authors.forename: Hanping
authors.initials: H
authors.lastname: Chen
mesh_terms: D018533:Biomass; D002384:Catalysis; D013696:Temperature
keywords: CaO; Cotton stalk; Fast pyrolysis