Journal Article

PUBDB-2024-01215

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Rational process design for the efficient oxidation of crude HMF-solution using AuPd/C catalysts

Neukum, D.Extern* ; Saraci, E. (Corresponding author)Extern* ; Wüst, D. ; Raj Lakshmi Nilayam, A. ; Sharma, S.Extern* ; Grunwaldt, J.-D. (Corresponding author)Extern*

2024
Elsevier Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.cattod.2024.114615  doi:10.3204/PUBDB-2024-01215

Abstract: The oxidation of 5-(Hydroxymethyl)furfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is of high interest for the production of renewable monomers. To achieve a cost-efficient, sustainable process for the large-scale production of FDCA, it is important to use the as-synthesized crude HMF-solution without extensive purification steps. In this work, we present the direct oxidation of crude HMF-solution produced from fructose syrup with an AuPd/C catalyst. The catalyst shows good tolerance against various remaining impurities from the HMF-preparation. A 95% FDCA yield with a productivity of 75.5 mol$_{FDCA}$ mol$_{AuPd}$$^{−1}$ h$^{−1}$ could be achieved under increased temperature (140 °C) and pressure (40 bar) with only 2 eq. Na2CO3. We further improved the process’ efficiency by using a two-step oxidation with a split addition of the base in the same reactor. First, a mild oxidation (1 eq. Na$_2$CO$_3$, 100 °C, 1.5 h) of HMF afforded the intermediates HFCA and FFCA, which were then further oxidized under harsher conditions (3.3 eq. NaOH, 140 °C, 4 h) to FDCA. Due to the higher efficiency, this process enabled increasing the HMF concentration up to 0.3 M for crude solution and 0.6 M for purified solution while minimizing the degradation of HMF, leading to a more cost-efficient oxidation of crude HMF-solution, and facilitating the industrial implementation of renewable FDCA.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20211473 (I-20211473) (I-20211473)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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