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다양한 촉매들을 통한 모델 바이오매스-초임계수 촉매 가스화에서 수소 생산 성능에 대한 연구

The Study on of Hydrogen Production Performance by Model Biomass-supercritical Water Gasification with Various Catalysts

  • 허동현 (전북대학교 자원에너지공학과) ;
  • 황종하 (전북대학교 자원에너지공학과) ;
  • 이루세 (전북대학교 자원에너지공학과) ;
  • 손정민 (전북대학교 자원에너지공학과)
  • Heo, Dong Hyun (Department of Mineral Resources and Energy Engineering, Chonbuk National University) ;
  • Hwang, Jong Ha (Department of Mineral Resources and Energy Engineering, Chonbuk National University) ;
  • Lee, Roosse (Department of Mineral Resources and Energy Engineering, Chonbuk National University) ;
  • Sohn, Jung Min (Department of Mineral Resources and Energy Engineering, Chonbuk National University)
  • 투고 : 2015.02.09
  • 심사 : 2015.02.28
  • 발행 : 2015.02.28

초록

In this study, the model biomass was used for hydrogen production by supercritical water gasification (SCWG). Model biomasses were glycerol, glycine, lignin and cellulose. The feed concentration was set to 1 wt%. Experiments were conducted in a reactor at $440^{\circ}C$ and above 26.3 MPa for 30 min. The effects of catalysts such as alkali metal salt ($K_2CO_3$ and $Na_2CO_3$) and transition metal salts ($Ni(NO_3)_2$, $Fe(NO_3)_3$ and $Mn(NO_3)_2$) on the gasification were systematically investigated. No tar or coke was observed in all experiments. The results showed that the gasification efficiency increased with various catalysts. For the cellulose and glycerol, all catalysts were effective for the promoted $H_2$ production compared with no catalyst. The significant decrease of $H_2$ production compared with no catalyst was observed with $Na_2CO_3$ and $Fe(NO_3)_3$ for glycine and lignin. respectively. The highest H2 production, 1.24 mmol was obtained for glycerol-SCWG with $Mn(NO_3)_2$. Conclusively, the addition of $Mn(NO_3)_2$ enhanced all model biomass gasification efficiency and increased the hydrogen production promoting the supercritical water reaction.

키워드

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