title: Syngas production by two-stage method of biomass catalytic pyrolysis and gasification.
abstract: A two-stage technology integrated with biomass catalytic pyrolysis and gasification processes was utilized to produce syngas (H(2)+CO). In the presence of different nickel based catalysts, effects of pyrolysis temperature and gasification temperature on gas production were investigated. Experimental results showed that more syngas and char of high quality could be obtained at a temperature of 750°C in the stage of pyrolysis, and in the stage of gasification, pyrolysis char (produced at 750°C) reacted with steam and the maximum yield of syngas was obtained at 850°C. Syngas yield in this study was greatly increased compared with previous studies, up to 3.29Nm(3)/kg biomass. The pyrolysis process could be well explained by Arrhenius kinetic first-order rate equation. XRD analyses suggested that formation of Mg(0.4)Ni(0.6)O and increase of Ni(0) crystallite size were two main reasons for the deactivation of nickel based catalysts at higher temperature.
authors.affiliation: School of Urban Planning and Design, Shenzhen Graduate School, Peking University, Shenzhen Key Laboratory of Circular Economy, Shenzhen 518055, China.
authors.forename: Qinglong
authors.initials: Q
authors.lastname: Xie
authors.forename: Sifang
authors.initials: S
authors.lastname: Kong
authors.forename: Yangsheng
authors.initials: Y
authors.lastname: Liu
authors.forename: Hui
authors.initials: H
authors.lastname: Zeng
mesh_terms: D018533:Biomass; D002384:Catalysis; D005740:Gases / Q000737:chemistry*; D006358:Hot Temperature
chemical_list: D005740:Gases