• 文献标题:   Graphene-supported metal nanoparticles as novel catalysts for syngas production using supercritical water gasification of microalgae
  • 文献类型:   Article
  • 作  者:   SAMIEEZAFARGHANDI R, HADI A, KARIMISABET J
  • 作者关键词:   supercritical water gasification, microalgae, graphenesupported catalyst, hydrogen production, metal nanoparticle
  • 出版物名称:   BIOMASS BIOENERGY
  • ISSN:   0961-9534 EI 1873-2909
  • 通讯作者地址:   Nucl Sci Technol Res Inst
  • 被引频次:   3
  • DOI:   10.1016/j.biombioe.2018.11.035
  • 出版年:   2019

▎ 摘  要

In this study, biomass conversion of chlorella sp. microalgae was investigated in the catalytic supercritical water gasification (SCWG) process. The catalytic effect of five different graphene-supported metal nanoparticle catalysts (Ni/rGO, Cu/rGO, Co/rGO, Mn/rGO and Cr/rGO) were evaluated on the composition of syngas. The impact of main process factors including catalyst loading (40, 70, and 100wt%), and temperature (355-405 degrees C) was studied on the SCWG process over Ni/rGO catalyst as the most efficient catalyst among the selected metal nanoparticles. The findings showed that at the optimum Ni/rGO loading of 70wt% (at temperature of 380 degrees C), the hydrogen yield increased by a factor of 5.8 in comparison to absence of Ni/rGO catalyst. At the optimum temperature of 405 degrees C (Ni/rGO loading of 40wt%), hydrogen selectivity of 31.9% was obtained. The results revealed that increment of Ni/rGO catalyst loading extremely reduced the solid residue and tar formation, which is desired in the SCWG process. Moreover, Characterizations proved the stability of prepared catalysts at supercritical condition.