Selective glucose dehydration over novel metal phthalocyanine catalysts at low temperatures

Kılıç H. A., KILIÇ E., Kabay N., Baygu Y., GÖK Y.

Reaction Kinetics, Mechanisms and Catalysis, cilt.132, sa.2, ss.637-654, 2021 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 132 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s11144-021-01969-y
  • Dergi Adı: Reaction Kinetics, Mechanisms and Catalysis
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.637-654
  • Anahtar Kelimeler: 5-HMF, Acid catalyst, Dehydration, Glucose, Phthalocyanine
  • Uşak Üniversitesi Adresli: Evet

Özet

In this report, promising carbon-based novel metal phthalocyanine catalysts were prepared and tested in glucose dehydration at low temperatures (90–130 °C) under atmospheric conditions. Most of the prepared phthalocyanines exhibited high conversions in dimethylsulfoxide (DMSO). A complete conversion of glucose was obtained over Aluminum phthalocyanine (AlPcCl) and Tin phthalocyanine (SnPcCl2) catalysts. AlPcCl also provided the highest HMF yield (53% in 3 h at 130 °C). Al3+ cations promoted the glucose conversion and Cl− anions played an active role in 5-Hydroxymethylfurfural (5-HMF) formation. Dimethylsulfoxide (DMSO) as a solvent, was also found effective with phthalocyanines for high 5-HMF yield by stabilizing its structure. Thus, the 5-HMF yield was observed high (53.0% at 130 °C for 3 h) over AlPcCl in DMSO. Kinetic studies showed that the optimum reaction temperature was 130 °C at 1/5 catalyst/glucose ratio for 3 h. Dehydration reactions, performed in the aqueous phase, exhibited higher fructose selectivities with AlPcCl catalyst. Graphic abstract: [Figure not available: see fulltext.].