Acid-Catalyzed Char Formation from 5-HMF in Subcritical Water

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yukihiko Matsumura¹  Takayuki Shii¹  Athika Chuntanapum¹ 

[1] Department of Mechanical System Engineering, Hiroshima University

关键词: 5-Hydroxymethylfurfural (5-HMF);    Acid Catalysis;    Supercritical Water Gasification (SCWG);    Kinetic Modeling;    Char Polymerization;    Biomass;   

DOI  :  10.1252/jcej.10we171

来源: Maruzen Company Ltd

【 摘 要 】

References(8)Cited-By(7)5-Hydroxymethylfurfural (5-HMF) is one of the intermediates in char polymerization, a side reaction that occurs in the supercritical water gasification (SCWG) of biomass. In this paper, we report the kinetic investigation of the polymerization of 5-HMF during solid char formation in an acidic environment. This is due to the fact that 5-HMF coexists with other product acids during biomass decomposition. Mixtures of 5-HMF and HCl were treated under subcritical conditions (350°C; 25 MPa). The concentration of 5-HMF ranged from 0.01 to 0.05 M, while that of HCl was 0.01 M (at room temperature). The rates of gas and char production from 5-HMF in experiments with and without acid addition were compared. The acid catalyzed the gasification and polymerization pathways of 5-HMF, especially the decomposition of 5-HMF to TOC, the rate constant of which was increased by two orders of magnitude.

【 授权许可】

Unknown