One-step production of CO- and CO2-free hydrogen from biomass

✍ Scribed by Minoru Ishida; Kiyoshi Otsuka; Sakae Takenaka; Ichiro Yamanaka

• Publisher: Wiley (John Wiley & Sons)
• Year: 2005
• Tongue: English
• Weight: 169 KB
• Volume: 80
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/jctb.1188

✦ Synopsis

Abstract

The reaction between a biomass (cellulose, sucrose, glucose, starch, cotton, or Japanese paper) and NaOH in the presence of water vapor produced pure hydrogen without CO and CO~2~ at temperatures in the range 473–623K. The addition of Ni/Al~2~O~3~ or Rh/Al~2~O~3~ catalyst to cellulose enhanced the production of hydrogen at <573 K. The reaction between cellulose and NaOH can be written as: C~6~H~10~O~5~ + 12NaOH + H~2~O = 6Na~2~CO~3~ + 12H~2~. The reactivities of alkali metal hydroxides were: KOH > NaOH ≫ LiOH. Copyright © 2004 Society of Chemical Industry