title: Hydrogen production from biomass gasification using biochar as a catalyst/support.
abstract: Biochar is a promising catalyst/support for biomass gasification. Hydrogen production from biomass steam gasification with biochar or Ni-based biochar has been investigated using a two stage fixed bed reactor. Commercial activated carbon was also studied as a comparison. Catalyst was prepared with an impregnation method and characterized by X-ray diffraction, specific surface and porosity analysis, X-ray fluorescence and scanning electron micrograph. The effects of gasification temperature, steam to biomass ratio, Ni loading and bio-char properties on catalyst activity in terms of hydrogen production were explored. The Ni/AC catalyst showed the best performance at gasification temperature of 800°C, S/B=4, Ni loading of 15wt.%. Texture and composition characterization of the catalysts suggested the interaction between volatiles and biochar promoted the reforming of pyrolysis volatiles. Cotton-char supported Ni exhibited the highest activity of H2 production (64.02vol.%, 92.08mgg(-1) biomass) from biomass gasification, while rice-char showed the lowest H2 production.
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Dingding
authors.initials: D
authors.lastname: Yao
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Hu
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Daqian
authors.initials: D
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China. Electronic address: yhping2002@163.com.
authors.forename: Haiping
authors.initials: H
authors.lastname: Yang
authors.affiliation: School of Engineering, The University of Hull, Hull HU6 7RX, UK.
authors.forename: Chunfei
authors.initials: C
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Xianhua
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Hanping
authors.initials: H
authors.lastname: Chen
mesh_terms: D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002384:Catalysis; D002606:Charcoal / Q000378:metabolism*; D005740:Gases / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism*; D009532:Nickel / Q000737:chemistry; D013696:Temperature; D014835:Volatilization
chemical_list: D005740:Gases; C540010:biochar; D002606:Charcoal; D009532:Nickel; D006859:Hydrogen
keywords: Biochar; Biomass gasification; H(2); Interaction; Ni