Valorization of humins from food waste biorefinery for synthesis of biochar-supported Lewis acid catalysts

Xiong, Xinni; Yu, Iris K.M.; Dutta, Shanta; Mašek, Ondřej; Tsang, Daniel C.W.

doi:10.1016/j.scitotenv.2021.145851

Cited by 37 publications

(16 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The N 2 adsorption–desorption isotherm and pore size distribution revealed that the material was micro mesoporous, and the surface area and average pore diameter were 7.802 m 2 g −1 and 3.4 nm, respectively. These values are similar to humins recently described in the literature [23,25] . The material was also subjected to SEM analysis (Figures S11).…”

Section: Resultssupporting

confidence: 77%

“…In contrast, in order to get an efficient utilization of raw materials, the valorization of the humins has been the subject of numerous research studies. For example, some studies have shown its use as a catalyst, [23–25] or as a precursor of 5‐HMF [26] or syngas [27,28] as well as for the synthesis of others bio‐based compounds [29–31] …”

Section: Introductionmentioning

confidence: 99%

“…Tsang and co‐workers have prepared a biochar‐supported Lewis acid catalyst based on the valorization of humins and applied it for the isomerization of glucose to fructose. The system was capable to produce fructose in 14 Cmol % [25] . Xu and co‐workers have functionalized humins with sulfonic acid groups for the synthesis of levulinic acid (LA) from cellulose and bamboo.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, in order to get an efficient utilization of raw materials, the valorization of the humins has been the subject of numerous research studies. For example, some studies have shown its use as a catalyst, [23][24][25] or as a precursor of 5-HMF [26] or syngas [27,28] as well as for the synthesis of others bio-based compounds. [29][30][31] Luque and co-workers have demonstrated the use of humins as a solid support for iron immobilization to prepare iron oxide catalytic nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

“…The system was capable to produce fructose in 14 Cmol %. [25] Xu and co-workers have functionalized humins with sulfonic acid groups for the synthesis of levulinic acid (LA) from cellulose and bamboo. The authors also investigated the recycling of the catalyst and LA could be synthetized in 65.9 mol% from cellulose and 45.6 mol% from bamboo.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Humins‐Like Solid Support for Palladium Immobilization: Highly Efficient and Recyclable Catalyst for Cross‐Coupling Reactions

et al. 2022

View full text Add to dashboard Cite

In the present work, a new humins-like resin was prepared using 2,5-bis(hydroxymethyl)furan (DHMF) and maleic anhydride in 2 min at 110 °C. Such a new material was used as a solid support for palladium immobilization. For metal anchoring, encapsulation was the method of choice and palladium was encapsulated by in-situ polymerization. This resulting Pd@DHMF-based catalyst was characterized by solid-state 13 C NMR, FT-IR, SEM, TGA, DSC, XRD, and XPS. To demonstrate proof of concept, Heck and Suzuki cross-coupling reactions were selected to evaluate the activity and reusability of the catalyst. Green solvents such as γ-valerolactone (GVL), Cyrene TM and ethylene carbonate proved to be excellent reaction media for Heck coupling, whereas EtOH/H 2 O was preferred for Suzuki coupling. Yields of up to 99 % were obtained in both cases. The recyclability of the Pd@DHMF-based catalyst was also demonstrated, 7 cycles have been achieved without loss of catalytic activity in both Heck and Suzuki reactions.

show abstract

Section: Resultssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In contrast, in order to get an efficient utilization of raw materials, the valorization of the humins has been the subject of numerous research studies. For example, some studies have shown its use as a catalyst, [23][24][25] or as a precursor of 5-HMF [26] or syngas [27,28] as well as for the synthesis of others bio-based compounds. [29][30][31] Luque and co-workers have demonstrated the use of humins as a solid support for iron immobilization to prepare iron oxide catalytic nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations