5-HMF production from industrial grade sugar syrups derived from corn and wood using niobium phosphate catalyst in a biphasic continuous-flow tubular reactor

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

23 Scopus Citations
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Author(s)

  • Sadra Souzanchi
  • Laleh Nazari
  • Kasanneni Tirumala Venkateswara Rao
  • Zhongshun Yuan
  • Zhongchao Tan

Detail(s)

Original languageEnglish
Pages (from-to)274-280
Journal / PublicationCatalysis Today
Volume407
Online published27 Jul 2021
Publication statusPublished - 1 Jan 2023
Externally publishedYes

Abstract

This work demonstrated the promise of using industrial-grade sugar syrups derived from corn and wood, i.e., high fructose corn syrup (HFCS), glucose corn syrup (GCS) and wood-based sugar (TMP-Bio Sugar), as cheaper and competitive feedstocks for 5-HMF production using niobium phosphate as a heterogeneous solid acid catalyst in a biphasic continuous-flow tubular reactor. 5-HMF yield as high as 53.1% with 100% sugar (glucose and fructose) conversion was obtained from catalytic dehydration of HFCS-90 (containing 90 wt% fructose) at 150 °C, with feed concentration of 200 mg/ml (glucose and fructose) and aqueous to organic phase ratio of 1:5 (v/v). Catalyst stability with time was tested over 20 h of continuous-time on stream, and the reusability of the catalyst was studied after in-situ regeneration of the used catalyst by calcination in the air for removing the deposited humins and coke on the surface of the catalyst particles. The regenerated catalyst showed good activity with almost constant selectivity, although at lower glucose conversion and reduced 5-HMF yield compared to the fresh catalyst, indicating that the in-situ regeneration process could recover a part of the acid sites on the catalyst surface. The produced humins during the reaction were characterized by Fourier transform infrared spectrometry (FT-IR), thermogravimetric analysis (TGA) and elemental analysis (CHNS). The results showed high aromaticity and the presence of a high degree of unsaturated compounds in the structure of humins. © 2021 Elsevier B.V.

Research Area(s)

  • 5-HMF, Biphasic continuous-flow tubular reactor, Glucose corn syrup (GCS), High fructose corn syrup (HFCS), Niobium phosphate, TMP-Bio Sugar

Citation Format(s)

5-HMF production from industrial grade sugar syrups derived from corn and wood using niobium phosphate catalyst in a biphasic continuous-flow tubular reactor. / Souzanchi, Sadra; Nazari, Laleh; Rao, Kasanneni Tirumala Venkateswara et al.
In: Catalysis Today, Vol. 407, 01.01.2023, p. 274-280.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review