Renewable biomass-derived, P-doped granular activated carbon for efficient oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran: Insights into the crucial role of P and N functionality

Zhu Yin, Fengzhen Wu, Changfu He, Lirong Tang, Yandan Chen, Guanfeng Lin, Biao Huang, Jing Chen and Beili Lu

Renewable Energy, 2023, vol. 219, issue P1

Abstract: Heteroatom-doped carbon materials for eco-friendly metal-free catalysis have gained increasing attention, but they nevertheless face technological challenges relating to the difficult recycling and high cost. In this work, P-doped granular activated carbons with intrinsic N functionality (PN-GAC-T) were successfully fabricated from low-cost and sustainable waste peanut shells using a simple self-bonding strategy assisted by phosphoric acid. The as-prepared PN-GAC-T were found to have abundant N, P functional groups and large specific surface areas, making them potentially efficient metal-free catalysts for the selective oxidation of 5-hydroxymethylfurfural (HMF). Catalytic results showed that an excellent HMF conversion (98.4%) and 2,5-diformylfuran (DFF) selectivity (99.7%) could be achieved under mild conditions via employing PN-GAC-800 as a catalyst. The good catalytic performance of PN-GAC-800 is highly reliant on the synergistic effect between doped P and intrinsic N functionalities as verified by the control experiments. Furthermore, the density functional theory (DFT) calculations demonstrated that the introduction of both P and N functional groups would aid in the activation of HMF and the improvement of oxygen adsorption capability. This work has emphasized the possibility of high-value exploitation of biomass waste, and it is predicted to provide new inspiration for the development of readily recyclable heteroatom-doped carbon catalysts.

Keywords: Granular activated carbon; Biomass; Heteroatom doping; 5-Hydroxymethylfurfural; Oxidative transformation (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:219:y:2023:i:p1:s0960148123013034

DOI: 10.1016/j.renene.2023.119388

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