2-dimensional nanoleaf-like porous copper nitrate hydroxide as an effective heterogeneous catalyst for selective oxidation of hydroxymethylfurfural to diformylfuran

Li, B.-C., Lee, J., Kwon, E., Thanh, B. X., Lin, J.-Y., You, S. , Lin, C.-H. and Lin, K.-Y. A. (2021) 2-dimensional nanoleaf-like porous copper nitrate hydroxide as an effective heterogeneous catalyst for selective oxidation of hydroxymethylfurfural to diformylfuran. Journal of the Taiwan Institute of Chemical Engineers, 126, pp. 189-196. (doi: 10.1016/j.jtice.2021.07.022)

Abstract

Background: 2,2,6,6-tetramethylpiperidin-oxyl (TEMPO) accompanied with Cu has been validated as a promising oxidative catalytic process for oxidizing 5-hydroxymethylfurfural (HMF) to value-added products. Since Cu-O cluster plays an important role in TEMPO-based HMF oxidation, and N-O moiety would facilitate the catalytic cycle of TEMPO regeneration, an interesting solid-phase material, copper nitrate hydroxide (CNH) (Cu2(OH)3NO3) is proposed for the first time for co-catalyzing TEMPO to oxidize HMF into a valuable product, 2,5-diformylfuran (DFF). Methods: In particular, a CNH with a 2D elliptical and porous surface is fabricated to become the leaf-like porous CNH (LPCNH) to maximize surface contact via a relatively simple procedure, and LPCNH would be an advantageous catalyst with TEMPO for converting HMF into DFF. Significant findings: While TEMPO or LPCNH was unable to oxidize HMF into DFF, the combination of LPCNH/TEMPO rapidly, and efficiently converted HMF to DFF with high selectivities. At 140 °C, a significantly high YDFF = 99.3% with SDFF = 100% can be obtained, and surpass almost all reported values, indicating that LPCNH+TEMPO is advantageous and selective to convert HMF into DFF. LPCNH could be also reusable for co-catalyzing with TEMPO for converting HMF to DFF. These findings validate that LPCNH is certainly a useful heterogeneous catalyst for valorizing HMF.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: You, Dr Siming
• Authors: Li, B.-C., Lee, J., Kwon, E., Thanh, B. X., Lin, J.-Y., You, S., Lin, C.-H., and Lin, K.-Y. A.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Journal of the Taiwan Institute of Chemical Engineers
• Publisher: Elsevier
• ISSN: 1876-1070
• ISSN (Online): 1876-1089
• Published Online: 05 August 2021
• Copyright Holders: Copyright © 2021 Elsevier B.V. on behalf of Taiwan Institute of Chemical Engineers
• First Published: First published in Journal of the Taiwan Institute of Chemical Engineers 126: 189-196
• Publisher Policy: Reproduced in accordance with the publisher copyright policy