Immobilization of Heteropolyacids on Zeolite Surface for Catalytic Conversion of Glucose to 5-Hydroxymethyl Furfural (5-HMF)
Küçük Resim Yok
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer /Plenum Publishers
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
This study includes the synthesis of highly active and thermally stable natural zeolite-based catalysts. The catalysts were developed by loading various weight fractions (1, 3, 5, and 7 wt%) of heteropolyacids, phosphotungstic acid (PTA) and silicotungstic acid (STA) onto chemically activated natural zeolite through a two-step sol-gel method. The catalysts were characterized using different analytical techniques, like X-ray diffraction (XRD), fourier-transform infrared spectroscopy (FT-IR), N2 adsorption-desorption analysis, field-emission scanning electron microscopy- energy dispersive X-ray spectroscopy (FESEM-EDAX), and temperature-programmed desorption (TPD). The catalytic performance of the heteropolyacids-loaded natural zeolite catalysts (PTA/NZ and STA/NZ) was evaluated through the conversion of glucose to 5-hydroxymethyl furfural (5-HMF). The existence of Br & oslash;nsted acid sites has been confirmed by TPD analysis of samples. Remarkably high conversions of glucose were achieved with the catalysts containing 3 wt% heteropolyacids (STA/NZ-3 and PTA/NZ-3), indicating a significant number of active acid sites on the catalysts surface. Moreover, STA/NZ-3 and PTA/NZ-3 retained their catalytic activity after four reaction cycles, demonstrating promising reusability characteristics.
Açıklama
Anahtar Kelimeler
Catalyst, Glucose, Heteropolyacid, Hydroxymethyl furfural, Zeolite
Kaynak
Topics in Catalysis
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
Sayı
Nov
Künye
Gupta, S., Jain, R., Malpani, S. K., Yadav, A., Goyal, D., Bharti, S., Shukla, S. K., & Ulucan-Karnak, F. (2024). Immobilization of heteropolyacids on zeolite surface for catalytic conversion of glucose to 5-hydroxymethyl furfural (5-HMF). Topics in Catalysis.
