Modification of porous silica with activated carbon and its application for fixation of yeasts

Sachiko Furuta, Hiroaki Katsuki, Sridhar Komarneni

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Mixtures of small silica particles and activated carbon were heated at 1250-1450°C in an inert atmosphere to make nano- and macro-sized porous silica for incorporating yeast in the porous structure. Without activated carbon, porous silica of 45-60% porosity and 15-30 μm pore diameter was produced with a specific surface area below 1 m2/g. By the addition of 8 wt% of activated carbon granules, the surface area of porous silica increased to 100 m2/g at 1250°C. It was confirmed that there were micropores (1.2 nm) and mesopores (4.0 nm) due to activated carbon granules in porous silica when granule type activated carbon was used. However, in the case of activated carbon fiber, its micro- and mesoporous structure was destroyed in the firing process. The fixation of Z. rouxii yeasts was promoted on the porous silica with activated carbon.

Original languageEnglish (US)
Pages (from-to)43-48
Number of pages6
JournalJournal of Porous Materials
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2001

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Silicon Dioxide
Yeast
Activated carbon
Silica
Specific surface area
Carbon fibers
Macros
Porosity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "Mixtures of small silica particles and activated carbon were heated at 1250-1450°C in an inert atmosphere to make nano- and macro-sized porous silica for incorporating yeast in the porous structure. Without activated carbon, porous silica of 45-60{\%} porosity and 15-30 μm pore diameter was produced with a specific surface area below 1 m2/g. By the addition of 8 wt{\%} of activated carbon granules, the surface area of porous silica increased to 100 m2/g at 1250°C. It was confirmed that there were micropores (1.2 nm) and mesopores (4.0 nm) due to activated carbon granules in porous silica when granule type activated carbon was used. However, in the case of activated carbon fiber, its micro- and mesoporous structure was destroyed in the firing process. The fixation of Z. rouxii yeasts was promoted on the porous silica with activated carbon.",
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Modification of porous silica with activated carbon and its application for fixation of yeasts. / Furuta, Sachiko; Katsuki, Hiroaki; Komarneni, Sridhar.

In: Journal of Porous Materials, Vol. 8, No. 1, 01.01.2001, p. 43-48.

Research output: Contribution to journalArticle

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