Production of sugar alcohols from real biomass by supported platinum catalyst

Hirokazu Kobayashi, Yukiyasu Yamakoshi, Yuto Hosaka, Mizuho Yabushita, Atsushi Fukuoka

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The influence of lignin and inorganic salts on the catalytic activity was studied in the hydrolytic hydrogenation of real biomass by a supported Pt catalyst. The direct conversion of raw silver grass by Pt/carbon catalyst under H2 pressure produced small amounts of sorbitol (2.8 wt%), xylitol (7.3 wt%), and other sugar alcohols. It has been suggested that lignin reduces the reactivity of cellulose, as lignin exists together with cellulose in the biomass and both compounds are insoluble in water. Moreover, even weak bases drastically change the product distribution with more by-products such as EG and PG. Bases enhance the decomposition of sugar intermediates and sorbitol. The removal of lignin and inorganic salts by alkali-explosion and neutralization raises the contents of cellulose and hemicellulose, thus increasing the yields of sorbitol (13 wt%) and xylitol (14 wt%) in the hydrolytic hydrogenation reactions.

Original languageEnglish
Pages (from-to)204-209
Number of pages6
JournalCatalysis Today
Volume226
DOIs
Publication statusPublished - 2014 May 1
Externally publishedYes

Keywords

  • Biomass
  • Cellulose
  • Hemicellulose
  • Sorbitol
  • Supported platinum catalyst
  • Xylitol

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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