Microwave-assisted hydrolysis of polysaccharides over polyoxometalate clusters

Shuntaro Tsubaki, Kiriyo Oono, Tadaharu Ueda, Ayumu Onda, Kazumichi Yanagisawa, Tomohiko Mitani, Jun Ichi Azuma

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


Polyoxometalate (POM) clusters were utilized as recyclable acid catalysts and microwave-absorbing agents for the microwave-assisted hydrolysis of corn starch and crystalline cellulose. Phosphotungstic (PW) and silicotungstic (SiW) acids showed high hydrolyzing activity, while phosphomolybdic acid (PMo) showed lower glucose stability. The PW catalyst could be recycled by ether extraction at least 4 times without changing its catalytic activity. The addition of PW could reduce the energy demand required for running the hydrolysis by 17-23%. The dielectric property of the aqueous PW solution was important for increasing the microwave-absorption capability of the reaction system and reducing the energy consumption.

Original languageEnglish
Pages (from-to)67-73
Number of pages7
JournalBioresource Technology
Publication statusPublished - Sept 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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