Sulfated Zirconia Modified SBA-15 Catalysts for Cellobiose Hydrolysis

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Degirmenci V., ÜNER D., Cinlar B., Shanks B. H., YILMAZ A., van Santen R. A., ...Daha Fazla

CATALYSIS LETTERS, cilt.141, sa.1, ss.33-42, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 141 Sayı: 1
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s10562-010-0466-1
  • Dergi Adı: CATALYSIS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.33-42
  • Anahtar Kelimeler: Sulfated zirconia, Mesoporous, SBA-15, Cellobiose, Hydrolysis, Biomass, MESOPOROUS SILICA, ACID SITES, ETHANOL, CELLULOSE, SURFACE, ADSORPTION, CONVERSION, COPOLYMER, STRENGTH, TRIBLOCK
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Zirconia modified SBA-15 becomes a very active catalyst for the selective hydrolysis of cellobiose to glucose after sulfation. Spectroscopic investigations indicate the presence of Bronsted acid sites with similar properties to those present in conventional sulfated zirconia. Indications are found that the sulfate groups attached to zirconia interact with silanol groups of SBA-15. The catalytic activity in cellobiose hydrolysis correlates well with results for temperature-programmed decomposition of i-propylamine for a range of sulfated ZrO2/SBA-15 catalysts. A glucose yield of 60% during cellobiose hydrolysis at a reaction time of 90 min at 160 degrees C is obtained.