CATALYSIS TODAY
·
2024
·
IF 5.2
Jipeng Wang,Xinli Tong,Chen Guo,Yahui Wei
The high entropy oxides are widely studied as the potential catalytic materials owing to their unique structure and excellent properties. In this work, a new high entropy oxide catalyst MnFeCoNiCuO x was successfully prepared and used for the oxidative condensation reaction of furfural (FUR) and aliphatic alcohol , where the carbon-chain length can be selectively increased under the mild conditions. For the selective oxidative transformation of FUR with n-butanol, a more than 99.0 % conversion of FUR and 91.5 % selectivity of 2-(furanyl-2-methylene) butanal was obtained at 80 ºC for 2 h. In addition, the oxidative condensation of FUR with ethanol, n-propanol, n-pentanol, n-hexanol and n-heptanol was also carried out with the MnFeCoNiCuO x - LiOH as catalyst system in the presence of molecular oxygen , where a moderate to high product yields were acquired. Furthermore, the characterizations of catalyst showed that the existence of abundant oxygen vacancy and high specific area was greatly important to the catalytic reactions .
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Food Chemistry-X
·
2024
·
IF 6.5
Xiangyu Li,Qian Qin,Yanbo Luo,Yongqiang Pang,Jinchao Wei,Xingyi Jiang,Di Chen
Furfural compounds, including 5-hydroxymethylfurfural, furfural, and 5-methylfurfural, are common in foods and pose health risks. This study presents a pipette-tip solid-phase extraction with in-situ derivatization (PT-KF-SPE/ISD) method for rapid analysis of furfural compounds in various food matrices. Utilizing natural kapok fiber as an efficient adsorbent, this method integrates extraction and derivatization into a single step via a simple pull-push operation. Derivatization with 2,4-dinitrophenylhydrazine increases the hydrophobicity and ultraviolet absorption of furfural compounds, enabling sensitive liquid chromatography-ultraviolet detection. The method shows good linearity, sensitivity, and reproducibility, with limits of detection in ranges of 3.9–6.0 ng/mL. Real sample analysis confirms its applicability in detecting furfural compounds in beverages and herbal products, offering a reliable and eco-friendly solution for food safety and quality control. Five greenness assessment metrics demonstrate the method's excellent environmental friendliness. This approach highlights the advantages of combining natural adsorbents with in-situ derivatization for efficient food analysis.
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PubMed
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Molecular Catalysis
·
2025
·
IF 4.9
Wanqing Sun,Jilei Xu,Lei Li,Zhu Liu,Zuoyi Xiao,Qingda An,Jiahui Huang
5,5′(oxy-bis(methylene)) bis-2-furfural (OBMF) is an important biobased chemical that can be synthesized through the self-etherification of 5-hydroxymethylfurfural (HMF) in the presence of either homogeneous acid or solid acid catalysts, such as p-toluenesulfonic acid (PTSA) and molecular sieves. In previous studies, all authors believed that this process follows an acid-catalyzed mechanism, even though some argued that acid strength is not the key factor in the formation of OBMF. In this work, we present a new route for the synthesis of OBMF from HMF, utilizing hydrogen-bonding catalysis with protonated ionic liquids under metal-free conditions. [NMPH][OTf] featuring a cationic hydrogen bond donor and an anionic hydrogen bond acceptor, is effective for the self-etherification of HMF. Under the optimal conditions, the yield of OBMF reached approximately 92.4 %. Based on the results of Attenuated Total Reflectance Infrared Spectroscopy (ATR-IR), Nuclear Magnetic Resonance (NMR) and Density Functional Theory (DFT) calculation, it is determined that the cations and anions of ILs could activate the C O and O H bonds of HMF via hydrogen bonds respectively. This synergistically facilitates the self-etherification of two HMF molecules to form OBMF. After recycling the catalyst four times, the yield of OBMF did not decrease significantly. According to the Arrhenius law, the apparent activation energy and reaction order for [NMPH][OTf] in the self-etherification of HMF to OBMF are determined 40.7 kJ/mol and 1.0, respectively. The results suggested that [NMPH][OTf] is an excellent catalyst for the generation of OBMF from HMF. Therefore, this study offers a simple and environmentally friendly method for the production of OBMF, which holds promising potential for broad application prospect in the future.
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zhouxuan Zang,Jianhua Zhou,Ningke Pang,Wencai Bai,Yong Xiang,Yi Yu,Li Xu,Guoji Liu
High-energy-density sustainable aviation fuels are recognized as effective means to mitigate carbon emissions in the aviation sector. Here, we report various metal-modified layered double hydroxides (LDHs). The screened MgAlSn-LDH catalyst incorporating abundant oxygen vacancies and strong base sites yields (E)-1-(furan-2-yl)-5-methylhex-1-en-3-one (ALD) over 96% at 120 °C for 4 h. The catalyst exhibits promising long-term stability in a fixed-bed reactor at 170 °C. A combination of investigations using in situ DRIFTS studies and DFT calculations reveals that MgAlSn-LDH enhances the adsorption of methyl isobutyl ketone (MIBK) and furfural (FF). Further calculations have shown that the synergy of oxygen vacancies and strong base sites decreases the energy barrier of MIBK enolation, which increases the rate of the enolation reaction. This research provides a versatile synthesis method for improving the alkaline catalytic activity of LDH catalysts, and the performance of the catalysts can be extended to other upgrading processes of biomass chemicals.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhiyu Zhang,Mingming Zhang,Min Wu,Feng Jiang,Youhong Wang,Mang Wu,Liang Zhou
To enhance the application potential of lignin, lignin-based thermoplastic elastomers were developed by utilizing sustainable monomers. This work used grafting strategy to introduce terpene-derived monomer tetrahydrogeraniol acrylate (THGA) and tetrahydrofurfuryl methacrylate (TFMA) derived from furfural into lignin to obtain sustainable lignin-based thermoplastic elastomers. The findings indicate that the long-branched structure of THGA enables the lignin-based elastomer to achieve a reduced T g . By modifying the ratio of the two biomass monomers, the T g and mechanical properties can be regulated. Lignin plays an indispensable role in enhancing mechanical action. With identical monomer molar ratio input, lignin graft copolymers exhibit superior mechanical properties compared to linear copolymers. For instance, the fracture stress of Lignin0.50-PTFMA700 is 6.3 MPa, the fracture elongation is 277 %, the fracture stress is 2.5 times higher than PTFMA700, moreover, Lignin0.59-PTFMA500 also has good elastic recovery ability. Meanwhile, Lignin0.59-PTFMA500 exhibits excellent adhesion to various substrates, with a shear strength of 2.0 MPa on glass substrates. Additionally, these lignin-based thermoplastic elastomers also possess outstanding ultraviolet absorption performance. This offers a novel research idea for developing sustainable functional monomers and broadening the high-value addition of lignin.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
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IF 2.1
Yue Wang,Xiaohe Wang,Saisai Wang,JiaWei Zhao,Yang Wu,Tao Zhang,Zhigang Zhang,Wenxiu Li
There is a large amount of ethanol (EtOH) and a small amount of furfural (FF) in the ethanol pulping waste liquid. How to separate FF, a high value-added product, efficiently and cleanly and at the same time recover EtOH effectively and save energy is an urgent problem. This article describes the phase equilibrium process of extracting FF from wood pulp waste liquor by ionic liquids (ILs) 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6])/1-pentyl-3-methylimidazolium hexafluorophosphate ([PMIM][PF6]) as the extractant. Two ILs have excellent distribution coefficients (D) and selectivity (S) for FF, which can separate EtOH and FF well. A set of extraction performance evaluation methods based on the COSMO-RS model, liquid–liquid extraction method, and NRTL simulation were proposed. Combined with quantum chemical calculations such as interaction energy (ΔE), electrostatic potential analysis, and interaction region indicator, analysis of internal interaction and extraction mechanism between different molecules is realized.
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INDUSTRIAL CROPS AND PRODUCTS
·
2019
·
IF 4.191
Qilin Zhang,Chao Wang,Jianzhen Mao,Shri Ramaswamy,Xueming Zhang,Feng Xu
A bifunctional solid organocatalyst, sulfamic acid, was evaluated to produce furfural from xylose and different biomass in an environmentally friendly system comprising Gamma-Valerolactone (GVL) and water. The highest yield (70.19%) of furfural was achieved in a 90% solution of GVL in water containing 10 mol% of sulfamic acid at 190 °C for 15 min from xylose. The potential mechanism of sulfamic acid efficiently catalyzing xylose isomerization and dehydration is presented for the first time. It is hypothesized that another sulfamic acid form, the zwitterionic unit (H 3 N + SO 3 − ) is crucial in efficiently catalyzing isomerization reaction due to its electron-rich sulfonate being superior in attacking the hydrogen atom on C1 leading to the xylose tautomerization to xylulose, a shorter route to furfural, and finally, the NH 2 SO 3 H with strong acidity also promotes the xylulose dehydration to furfural. The above system was evaluated using various biomass species including corncob, Miscanthus × giganteus , the hull and shell of Camellia oleifera (tea) fruit and Aleurites fordii HemsL. (tung) fruit. Almost all these biomass showed excellent furfural yields (over 70%), with tung shell providing the best yield of 92.19% at 200 °C and reaction time of 30 min.
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APPLIED CATALYSIS A-GENERAL
·
2025
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IF 4.8
Jun He,Shuang Xiang,Xiaohui Liu,Yanqin Wang
High selective hydrogenolysis of furfural to 2-methylfuran over a metal oxide-based catalyst is promising and challenging. In this paper, a Zr-modified CoO x (Zr 1 Co 6 -325) catalyst was prepared via a simple co-precipitation/reduction and exhibited superior initial activity and remarkable circular stability during the hydrogenolysis of furfural (FUR) to 2-methylfuran (2-MF). As high as 71.2 % yield of 2-MF was achieved at 170 °C for 2 h and nearly no deactivation was found after five cycles, much better than those of reduced Co 3 O 4 catalyst (Co 3 O 4 -250). Comprehensive studies demonstrated that the over-reduction of the CoO species during the reaction process was the main cause of catalyst deactivation. The introduction of Zr species, on the one hand, inhibited the over-reduction of CoO species during reaction processes, thereby enhancing the circular stability. On the other hand, the introduction of Zr species promoted the activation and dissociation of H 2 and therefore improved the activity. This research unveiled the stabilizing effect of Zr species on CoO, providing guidance for the design of high-stable CoO-based catalysts.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wen-Jing Yi,Jingyi Yang,Yongzhen Gao,Xiaotian Zhou,Wenlei Zhang,Meng Zhang,Zhongyi Liu
Copper catalysts have garnered considerable interest as promising active metals for upgrading biomass resources, especially in selective furfural (FF) hydrogenation reaction. However, effectively enhancing the interactions between active metals and supports while providing abundant surface reaction sites remains enormous challenge to improve catalytic performance. Herein, we present a unique hydrotalcite-derived Cu-based catalyst featuring well-dispersed Cu 0 /Cu + nanodots towards selectively hydrogenated FF to furfuryl alcohol (FA). Impressively, the optimized CuMg 3 Al-R catalyst exhibits the exceptional hydrogenation performance, achieving almost 100 % FF conversion and 99.3 % FA selectivity. Comprehensive studies reveal that the small sized Cu species with well dispersion, the synergistic effect of Cu 0 and Cu + , combined with the selective adsorption and activation of C O groups jointly contribute to the enhanced catalytic performance. This work offers a promising strategy to rationally design well-dispersed Cu species for the selective hydrogenation of C O groups, which holds great significance for biomass-related hydrogenation reaction.
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RENEWABLE ENERGY
·
2025
·
IF 9.1
Baoxian Wang,Saiying Li,Zhiwei Wang,Zhenyu Zhou,Lizi Li,Shufang Wu,Weiqi Wei
Developing an efficient and feasible pretreatment is vital for biomass refining. Herein, a kind of p-toluene sulfonic acid (p-TsOH) pretreatment under mild conditions was proposed to convert the sugarcane bagasse (SCB) into glucose, furfural, and activated lignin. After the pretreatment, the cellulose-rich solid was digested by cellulase, and the glucose yield was up to 94.8 %. The pretreated liquid was diluted with deionized water to precipitate the lignin. Notably, the hemicelluloses degradation products in the supernatant, primarily xylose, can be directly converted into furfural without needing a catalyst, achieving a yield of 73.1 %. The recovered lignin exhibits excellent antioxidant properties, with a radical scavenging index (RSI) of 40.0 and significant UV absorbance, which displayed great potential in lignin-based sunscreen preparation. This study, therefore, presents a comprehensive strategy for the valorization of SCB, enhancing its potential for sustainable applications.
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GREEN CHEMISTRY
·
2021
·Vol. 23
·期 3
·1370-1381
·
IF 10.182
Huifa Zhang,Shaolin Wang,Huixian Zhang,James H. Clark,Fahai Cao
The present work introduces an extremely simple and eco-friendly strategy for the highly selective synthesis of maleic acid (MA) via oxidation of renewable furfural using the abundant biomass-derived P–C-T catalyst. The P–C-T carbon catalyst was metal-free and prepared by the pyrolyzation of phytic acid, which is a ubiquitous natural molecule containing phosphorus. Extensive characterization was carried out to reveal the morphological and elemental properties of the synthesized P–C-T series. The effect of the annealing temperature of pyrolyzing phytic acid on the properties of the yielded P–C-T and subsequent catalytic performance was also explored. The catalytic oxidation of furfural to MA was carried out in the presence of H2O2 within an aqueous system. The reaction conditions including the catalyst loading, H2O2 concentration, reaction temperature and duration were further optimized. It was found that P–C-600 exhibited a remarkable catalytic activity for MA synthesis from furfural oxidation with a maximum yield of 76.3% achieved in water. The excellent catalytic performance of P–C-600 was attributed to its unique atomic layered structure and suitable acidity. P–C-600 could also be re-used for at least six runs without any obvious decrease in its catalytic performance. The intrinsic advantages of green synthesis, low cost, and excellent catalytic performance in the catalytic oxidation of furfural to MA suggested that P–C-600 would be a promising catalyst in future industrial applications for MA synthesis in a green manner.
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JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Kecan Dou,Deqiong Xie,Jing Shi,Jie Chen,De-Li Chen,Weidong Zhu,Fumin Zhang
The catalytic conversion of furfural to furfuryl alcohol is crucial for maximizing biomass resource efficiency. This research aims to develop Co-NC/MXene catalysts for the hydrogenation reaction by pyrolyzing a mixture of Zn/Co bimetal zeolitic imidazolate framework (ZnCo-ZIF) and MXene. During the pyrolysis process, the organic components of the ZnCo-ZIF network are converted into nitrogen-doped porous carbon (NC). Simultaneously, Co metal nodes are transformed into Co nanoparticles, which are embedded within the NC framework and firmly anchored onto the MXene surface. The resultant 14.6 % Co-NC/MXene catalyst demonstrated exceptional performance in selectively hydrogenating furfural to furfuryl alcohol, with a 98.7 % conversion and 100 % selectivity under mild conditions (333 K and 2 MPa H 2 for 12 h), utilizing water as the solvent. Structural characterizations and comparative analyses with alternative catalysts, including Co nanoparticles on activated carbon (Co-NC/C), MXene-support-free Co-NC, and Co im /MXene synthesized through impregnation, reveal that the superior efficiency of the 14.6 % Co-NC/MXene catalyst originates from the collaborative efforts between Co nanoparticles and the MXene support. Furthermore, the catalyst exhibited remarkable stability, preserving its catalytic activity and selectivity with minimal degradation across six consecutive cycles.
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