Applied Catalysis2022，Vol.30119.DOI:10.1016/j.apcatb.2021.120800

Selective tandem catalysis for the synthesis of 5-hydroxymethylfurfural from glucose over in-situ phosphated titania catalysts: Insights into structure, bi-functionality and performance in flow microreactors

Guo, Wenze Kortenbach, Thijn Qi, Wei Hensen, Emiel Heeres, Hero Jan Yue, Jun
Applied Catalysis2022，Vol.30119.DOI:10.1016/j.apcatb.2021.120800
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  • NSTL
  • Elsevier

Selective tandem catalysis for the synthesis of 5-hydroxymethylfurfural from glucose over in-situ phosphated titania catalysts: Insights into structure, bi-functionality and performance in flow microreactors

Guo, Wenze 1Kortenbach, Thijn 1Qi, Wei 2Hensen, Emiel 3Heeres, Hero Jan 1Yue, Jun1
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作者信息

  • 1. Univ Groningen, Engn & Technol Inst Groningen, Dept Chem Engn, NL-9747 AG Groningen, Netherlands
  • 2. Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, 2 Nengyuan Rd, Guangzhou 510640, Peoples R China
  • 3. Eindhoven Univ Technol, Dept Chem Engn & Chem, NL-5600 MB Eindhoven, Netherlands
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Abstract

5-Hydroxymethylfurfural (HMF) synthesis from glucose over in-situ phosphated titania catalysts is presented. Phosphates were incorporated into titania framework forming a titanium phosphate surface layer, where the coordinatively unsaturated tetrahedral TiO4 units act as water-tolerant Lewis acid site (LAS) and the adjacent protonated phosphate as Bronsted acid site (BAS), together forming Lewis-Bronsted acid pairs at molecular-level proximity. Glucose turnover and HMF selectivity were enhanced due to the rapid fructose transfer from LAS to the adjacent BAS for its dehydration to HMF, facilitating LAS liberation for another glucose turnover. Reactions in a water-2-methyltetrahydrofuran biphasic system in packed-bed microreactors gave 66% HMF yield (from 1 M glucose at 150 degrees C), where the HMF space time yield is about two orders of magnitude higher than that in batch and the literature work. Phosphate leaching from the catalyst is rather limited, whereas the catalyst deactivated mainly by humin deposition and could be regenerated by calcination.

Key words

5-Hydroxymethylfurfural/Glucose/Phosphated titania/Solid acid/Microreactor

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量36
参考文献量81
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