title: Effects of inherent alkali and alkaline earth metallic species on biomass pyrolysis at different temperatures.
abstract: This work aimed to investigate effects of inherent alkali and alkaline earth metallic species (AAEMs) on biomass pyrolysis at different temperatures. The yield of CO, H2 and C2H4 was increased and that of CO2 was suppressed with increasing temperature. Increasing temperature could also promote depolymerization and aromatization reactions of active tars, forming heavier polycyclic aromatic hydrocarbons, leading to decrease of tar yields and species diversity. Diverse performance of inherent AAEMs at different temperatures significantly affected the distribution of pyrolysis products. The presence of inherent AAEMs promoted water-gas shift reaction, and enhanced the yield of H2 and CO2. Additionally, inherent AAEMs not only promoted breakage and decarboxylation/decarbonylation reaction of thermally labile hetero atoms of the tar but also enhanced thermal decomposing of heavier aromatics. Inherent AAEMs could also significantly enhance the decomposition of levoglucosan, and alkaline earth metals showed greater effect than alkali metals.
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China; China-EU Institute for Clean and Renewable Energy at Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Song
authors.initials: S
authors.lastname: Hu
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China. Electronic address: jianglong@hust.edu.cn.
authors.forename: Long
authors.initials: L
authors.lastname: Jiang
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China; China-EU Institute for Clean and Renewable Energy at Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Su
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China; China-EU Institute for Clean and Renewable Energy at Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Lushi
authors.initials: L
authors.lastname: Sun
authors.affiliation: China-EU Institute for Clean and Renewable Energy at Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Boyang
authors.initials: B
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Limo
authors.initials: L
authors.lastname: He
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China; China-EU Institute for Clean and Renewable Energy at Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Xiang
mesh_terms: D018533:Biomass; D002245:Carbon Dioxide / Q000737:chemistry; D005030:Ethylenes / Q000737:chemistry; D005740:Gases / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D008672:Metals, Alkali / Q000737:chemistry*; D008673:Metals, Alkaline Earth / Q000737:chemistry*; D013638:Tars / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D005030:Ethylenes; D005740:Gases; D008672:Metals, Alkali; D008673:Metals, Alkaline Earth; D013638:Tars; D014867:Water; D002245:Carbon Dioxide; D006859:Hydrogen; C036216:ethylene
keywords: Agricultural residues; Bio-oil; GC–MS; Minerals; Pyrolysis