Biomass Gasification to Hydrogen and Syngas at Low Temperature: Novel Catalytic System Using Fluidized-Bed Reactor

We have developed a novel catalytic process for hydrogen and syngas production from biomass at very low temperature using an excellent catalyst in a continuous-feeding fluidized-bed reactor using cellulose as a model compound

Mohammad Asadullah; Shin-ichi Ito; Kimio Kunimori; Muneyoshi Yamada; Keiichi Tomishige

2002

Scholarcy highlights

  • We have developed a novel catalytic process for hydrogen and syngas production from biomass at very low temperature using an excellent catalyst in a continuous-feeding fluidized-bed reactor using cellulose as a model compound
  • It is well known that the reaction process of methanol to olefins keeps to the hydrocarbon pool mechanism; there is no clear consensus over how the primary HCP species are built and how they evolve in the transition period of MTO
  • MCPdienes are identified as the primary HCP intermediates in the early transition period of MTO and their appearance promotes the build-up of aromatic HCP and drives the MTO process from the induction period to the steady period
  • The insight shown in this work helps to clarify the reaction mechanism of MTO in the initial period, which should be of benefit to further researches into MTO
  • Compared to a bed of sand alone, a 20% higher H2 concentration, an almost double H2 yield and a 67% reduction in tar content were obtained when a bed of calcium oxide was used
  • The results show that equivalence ratio, bed material, temperature, particle size and carbon content of the biomass are the input parameters influencing the output of the gasifier the most
  • C6-hydrocarbons, namely, n-hexane, 1-hexene, cyclohexane, and benzene, were selected as surrogate tar in low-temperature gasification of biomass in the study of carbon deposition of organic compounds on a Ni/Al2O3 catalyst

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