LANGMUIR
·
2025
·
IF 3.9
Shangpu Zhuang,Yilin Lei,Fan Xue,Tao Wei,Di Hao,Luming Qi,Lichun Nian,Yuyu Sun,Mifen Cui,Zhuxiu Zhang,Ruiping Wei,Jihai Tang,Xu Qiao
In heterogeneous catalysis research, a significant challenge is to elucidate how metallic copper (Cu0) and cuprous (Cu+) phases interact with their supporting materials, with a special emphasis on how oxygen vacancy (OV) sites participate in hydrogenation processes. In this work, Cu/CexZr10-x catalysts were prepared by introducing Zr-incorporated Ce-MOF, followed by copper impregnation and calcination. Characterization by TEM, XPS, EPR, H2-TPD, Py-IR spectroscopy, and in situ FTIR revealed that Zr doping enhanced the OV concentration, stabilized Cu+ species, and generated abundant Lewis acid sites. The optimal Zr content effectively balances the Cu0/Cu+ redox couples and acid sites, accelerating desired reactions, while excessive Zr incorporation leads to increased Brønsted acidity and promotes undesirable side reactions. These features synergistically enhance the adsorption of 5-HMF, activate carbonyl groups, and facilitate the sequential hydrogenation and deoxygenation processes, thereby achieving 5-HMF fully converted and achieving a 2,5-DMF selectivity of 98.2% under optimal reaction parameters. This study clarifies the cooperative mechanism among Cu active sites, OV, and acid sites in the conversion of 5-HMF and demonstrates that rational Zr incorporation in MOF-derived Cu/CexZr10-x catalysts can precisely modulate surface properties and significantly improve catalytic performance. These findings offer valuable guidance for the rational design of advanced heterogeneous catalysts aimed at biomass valorization and the production of renewable fuel.
研究领域:
多相催化
·
材料化学
·
生物质转化
·
可再生能源
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可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Yunlei Zhang,Wen Guan,Hongyao Song,Yanan Wei,Pei Jin,Bing Li,Changhao Yan,Jianming Pan,Yongsheng Yan
Chemically functional microporous metal-organic frameworks (MOFs) crystals are attractive for catalysis applications, and recent results show that they can be immobilized on high stability substrates, such as carbon materials. In this work, g-C 3 N 4 supported UiO-66-type MOFs catalysts with only acid, base or acid-base bi-functional active sites, have been successfully synthesized via a green (aqueous solutions), mild (90 °C, atmospheric pressure), and one-pot modulated hydrothermal (MHT) method. The physical and chemical properties of the obtained catalysts were systematically characterized by different characterization methods. The results indicated that the synthesized catalysts have microporous structure, excellent thermostability and acid-base bi-functional active sites. One-pot synthesis of 5-hydroxymethylfurfural (5-HMF) from glucose was performed to investigate the activities of synthesized catalysts. Benefiting from the synergistic effects of the acid-base bi-functional active sites, the highest 5-HMF yield of 54.9% was achieved in an isopropanol-mediated DMSO system, under the optimal conditions. Moderate to excellent yields of 5-HMF were also obtained from one-pot conversions of other carbohydrates, including inulin , sucrose, cellobiose, maltose and starch , with our developed catalytic system. The one-pot production of 5-HMF from cellulose was also smoothly processed by the g-C 3 N 4 supported UiO-66-type MOFs catalysts in an IL-based system. This work offers a versatile strategy for developing supported UiO-66-type MOFs catalyst for a wide range of biomass transformation to platform chemicals.
研究领域:
催化化学
·
生物质转化
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xiang Liu,Ao Luo,Yiran Li,Yuqi Cao,Tingting Ma,Su Wang,Wei He
Nine metal-doped titanium dioxide (TiO2) catalysts (Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W) were synthesized via a gel precipitation method, and their catalytic performance for the dehydration of glucose to 5-hydroxymethylfurfural (5-HMF) in a biphasic system was systematically investigated. Using characterization techniques such as XRD, BET, NH3-TPD, TGA, and XPS, the regulatory mechanisms of metal doping on the crystal structure, surface acidity, and oxygen species distribution of TiO2 were elucidated. Experimental results demonstrated that niobium-doped TiO2 (Nb-TiO2) exhibited the highest 5-HMF yield (25.1 %), attributed to the synergistic exposure of {101}, {210}, and {201} crystal facets, an optimized ratio of Lewis to Brønsted acid sites, and a high concentration of active oxygen species. Furthermore, by comparing the catalytic performance of different metal-doped systems, it was confirmed that the synergistic effect between the electronic structure of the metal and the lattice oxygen activity of TiO2 was the key factor in enhancing catalytic efficiency.
研究领域:
催化
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材料科学
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化学工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Yongzhao Zhang,Xuzheng Chen,Yunlei Zhou,Tao Feng,Luping Lyu,Zhenya Zhu,Yifan Liu
The efficient transformation of glucose into 5-hydroxymethylfurfural (5-HMF) is crucial for sustainable bio-refinery processes, but achieving high production efficiency remains challenging. In this study, we presented the preparation of Al-containing metal-organic frameworks (MOFs), specifically MIL-53(Al), MIL-53(Al)-NO2, and MIL-53(Al)-NH2, using different ligands as catalysts to enhance the production of 5-HMF from glucose. Comprehensive characterization provided valuable insights into the properties of the synthesized MOFs. The synthesized MOFs exhibited varied MIL-53(Al) states, morphologies, and thermal stabilities based on the different ligands employed, which in turn affected their catalytic performance. Among the Al-containing MOFs synthesized, MIL-53(Al)-NH2 demonstrated remarkable catalytic capabilities for the conversion of glucose to 5-HMF. This MOF achieved an impressive 5-HMF yield of 53% and a reaction selectivity of 54%. The catalytic efficiency was further enhanced by leveraging the synergistic effect of MIL-53(Al)-NH2 in combination with Amberlyst-36, resulting in a 5-HMF yield of 59% and a reaction selectivity of 60%.
研究领域:
化学工程
·
催化
·
材料科学
·
可持续化学
✓ 已验证
产品关联
DOI
高影响因子
Food Chemistry-X
·
2024
·
IF 6.5
Ji Wang,Jing Che,Xu-Song Wang,Lei Qin,Xu-Hui Huang
The levels of flavor compounds and hazardous compounds are important indicators for evaluating high-temperature roasted food. In this paper, the effect of tea pre-marination on non-volatile compounds, volatile compounds, and hazardous compounds in roasted chicken. The results showed that the total content of key umami non-volatile compounds in roasted chicken marinated with green tea, white tea, and black tea increased by 17.43 % to 100.11 %. The content of alkenes, alcohols, aldehydes, and ketones in high-temperature roasted chicken marinated with oolong tea and yellow tea was increased. Different teas had varying inhibitory effects on hazardous compounds in high-temperature roasted chicken, while green tea exhibited the highest inhibition efficacy. The inhibition rates of green tea for ACY, 5-HMF, HCAs, and PAHs were 72.12 %, 69.87 %, 92.49 %, and 14.92 %, respectively. Flavonoids in tea may play an important role in the flavor enhancement and hazardous compounds inhibition of high-temperature roasted chicken.
研究领域:
食品科学
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化学
·
营养学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 14
·6756-6764
·
IF 3.925
Boyong Ye,Wenyang Zhang,Ruru Zhou,Yuanyuan Jiang,Zixin Zhong,Zhaoyin Hou
The dehydration of fructose to 5-hydroxymethylfurfural (5-HMF) is a crucial step in the biorefinery process, and finding a recyclable solid-acid catalyst and green solvent remains a challenge. In this work, a mesoporous sulfonated high-crosslinked polymer (abbreviated as SHCP) was synthesized following a facile route and used in the dehydration of fructose to 5-HMF in different solvents. The structure and properties of SHCP were characterized using N2 adsorption–desorption, XRD, Raman, SEM, TEM, FTIR, 13C CP/MAS NMR and XPS techniques. It was confirmed that SHCP possesses high surface area, uniform mesoporous and abundant sulphonic groups, and it can promote the dehydration of fructose to 5-HMF under mild reaction conditions. At the same time, the performance of SHCP in different solvents was tested in detail, it was found that SHCP exhibited similar initial activity in 1,4-dioxane/H2O mixture as that in dimethyl sulfoxide (DMSO), while the stability of SHCP in 1,4-dioxane/H2O mixture was enhanced obviously compared with that in DMSO. The reason for the deactivation of SHCP in different solvents was discussed, and it was disclosed that a small amount of water in DIO could depress the oligomerization of 5-HMF and enhance the stability of SHCP.
研究领域:
化学工程
·
催化
·
绿色化学
·
生物精炼
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL DAIRY JOURNAL
·
2023
·
IF 3.1
Hongbo Li,Meng Bian,Yuelu Jiang,Chunshuang Li,Yang Zou,Xiaohong Chen,Hongjuan Li,Jinghua Yu
To better monitor and reduce the generation of Maillard reaction products (MRPs) during the heat treatment and storage of dairy products , a reaction kinetic model was established to evaluate the inhibitory effects of tea polyphenols on MRPs in the milk simulation system. The inhibition of MRPs by tea polyphenols followed first order kinetics, while the inhibition of 5-hydroxymethyl-2-furfural (5-HMF) was most pronounced at 95 °C with the reaction rate constant of −0.0683 d −1 . Arrhenius model showed that the conversion rate of 5-HMF (35.672 d −1 ) was higher than N ε -carboxyethyllysine (2.585 d −1 ) and N ε -carboxymethyllysine (0.53 d −1 ) after the addition of tea polyphenols, which indicated that 5-HMF was the main intermediate product of Maillard reaction. Moreover, the shelf life of the two-stage sterilised milk containing tea polyphenols was 141 d, which was 2.1 times longer than that of the control sample (67 d), which provided reference for consumers during the drinking period.
研究领域:
食品科学
·
化学动力学
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乳品技术
·
食品保鲜
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2021
·
IF 3.171
Lei Hu,Shunhui Tao,Junting Xian,Xiaodong Zhang,Yao Liu,Xiaojie Zheng,Xiaoqing Lin
In this study, three kinds of amide functional group modified hyper-cross-linked adsorption resin were synthesized by alternating radical copolymerization in simple one-step and applied for 5-hydroxymethylfurfural (5-HMF) adsorption. The successful synthesis and properties of adsorbents were evaluated with Fourier transform infrared spectroscopy, scanning electron microscopy, nitrogen adsorption–desorption isotherms, thermogravimetric analysis, and elemental analysis. Poly ( N , N ′-4,4′-diphenylmethane-bismaleimide-alt-divinylbenzene) (poly (BDM-alt-DVB)) resin exhibited highest adsorption capacity for 5-HMF (64.0 mg·g −1 wet resin) and excellent adsorption selectivity ( α 5-HMF/LA = 2.71 ± 0.12, α 5-HMF/FA = 13.88 ± 0.15, α 5-HMF/Glucose = 11.91 ± 1.11) in the multi-component solution at 25 °C. Langmuir isotherm model well fitted the equilibrium adsorption data within the initial 5-HMF concentration range of 0.5–10.0 g·L −1 with highest correlation coefficient. Furthermore, the thermodynamic parameters demonstrated that the adsorption of 5-HMF onto poly (BDM-alt-DVB) resin was spontaneous and exothermic. Kinetic study revealed that the adsorption process was fast, reaching equilibrium within 12 min. Importantly, the poly (BDM-alt-DVB) resin also demonstrated excellent reusability. In summary, the poly (BDM-alt-DVB) resin will be useful in 5-HMF hydrolysate separation applications.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 39
·18450-18460
·
IF 3.3
Yao Shen,Fang Lin,Kang Wang,Xitao Wang
CaO-doped γ-Al2O3 beads were prepared by an alginate assisted sol–gel method, followed by grafting with alkyl groups and impregnation of NbCl5 to construct multi-functionalized γ-Al2O3 beads for efficient catalytic conversion of glucose to 5-hydroxymethylfurfural (5-HMF). Doping with CaO improved the binding capacity of the catalyst with glucose and increased the Lewis acid amount. However, a high CaO content would cover the Lewis acid sites of γ-Al2O3, resulting in a lower isomeric conversion of glucose to fructose. When the C8–Ca(10%)–γ-Al2O3 catalyst was loaded with Nb2O5, intermediate fructose was consumed rapidly resulting in complete conversion of glucose, which indicated that conversion of glucose to 5-HMF involved the isomeric conversion of glucose to fructose followed by dehydration of fructose to 5-HMF. This was necessary to balance hydrophilic isomerization reactions with restraining the rehydration of 5-HMF by hydrophobic modification. This is similar to the reaction in which a medium with a certain amount of water was beneficial for glucose isomerization. Under the synergistic effect of Lewis acid provided by γ-Al2O3 and Brønsted acid offered by Nb2O5, C8–Ca(10%)–γ-Al2O3–Nb(3%), a glucose conversation rate of 100% and the highest yield of 5-HMF (68.4%) were achieved in the reaction medium with a dimethylsulfoxide/H2O (V/V) ratio of 4 : 1, a catalyst amount of 33 mg, a reaction temperature of 140 °C and a reaction time of 4 h.
研究领域:
化学工程
·
催化
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Yuejie Qiu,Longbin Li,Leping Zhang,Jianxin Jiang,Liwei Zhu
This study develops a catalytic system using pyruvic acid (PYA) and Fe2+ to efficiently coproduce xylo-oligosaccharides (XOS) and (manno-oligosaccharides) MOS from food material (Gleditsia sinensis Lam. fruit.) and its waste peel, respectively. The system achieved maximum yields of 67.12% XOS and 57.32% MOS without toxic byproducts such as furfural and 5-hydroxymethylfurfural (5-HMF) below 130 °C. The process employs a two-stage mechanism, where PYA cleaves galactose side chains and xylan backbones, while Fe2+ stabilizes β-1,4-glycosidic bonds, resulting in polymerization degree ratios of X2–3/X4–5 at 0.975 and M2–3/M4–5 at 0.96. The composite oligosaccharides, PFMX, showed significant prebiotic effects, enhancing Bifidobacterium adolescentis growth to 3.4 × 108 CFU/mL─144% higher than commercial fructooligosaccharides (FOS). The concentration of short-chain fatty acids (SCFAs) was 15.09 g/L, with specific products propionic acid (1.44 g/L) and butyric acid (0.15 g/L). PFMX effectively regulates substrate utilization and SCFA metabolism, offering a promising strategy for developing functional foods that target gut inflammation.
研究领域:
催化化学
·
碳水化合物化学
·
食品科学与技术
·
益生元与肠道微生物
·
绿色化学
·
生物炼制
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2024
·
IF 5.9
Chenxi Lu,Bingqing Hu,Liangzhi Li,Xin Ju,Lishi Yan
5-hydroxymethylfurfural (5-HMF) is a key platform chemical that can be applied to generate varied value-added products. Herein, the sulfonated zirconium/tin Mixed-Metal metal–organic frameworks (MOFs), Sn/UiO-66-SO 3 H catalysts were employed for catalytic conversion of biomass-derived carbohydrates (glucose, sucrose, maltose, starch, and cellulose) to 5-HMF in green deep eutectic solvents (DESs)-water based biphasic system. The Sn/UiO-66-SO 3 H catalysts were prepared by infiltrating Sn 4+ into the UiO-66-SO 3 H via post-synthesis modification. The synthesized catalysts were characterized by PXRD, SEM, FTIR, N 2 adsorption–desorption analysis, XPS, ICP-OES, NH 3 -TPD and Py-FTIR. The synergistic effect of Zr 4+ and Sn 4+ increased the total acidity and pore size of MOFs, thus promoting the catalytic performance of MOFs towards carbohydrates conversion to 5-HMF. The 24-Sn/UiO-66-SO 3 H with impregnation of Sn 4+ for 24 h presented desired catalytic ability, which resulted in 81.5 % and 41.7 % 5-HMF yields from glucose and cellulose in DES betaine-malic acid–water/MIBK biphasic system, respectively. Moreover, the five-recycling test for 24-Sn/UiO-66-SO 3 H demonstrated excellent reusability of the prepared catalyst. This study offered a novel sulfonated Mixed-Metal strategy on MOFs in DES betaine-malic acid–water based biphasic system for the production of 5-HMF from biomass-derived carbohydrates.
研究领域:
催化
·
绿色化学
·
材料科学
·
生物质转化
·
化工工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Yingying Li,Xueli Ma,Wei Lv,Hong Chen,Linhao Yu,Zewei Ma,Sen Wang,Yongdan Li
Cr-doped ZnAl mixed oxide catalysts (Zn0.75CrAl-x-c) were obtained via calcining the Zn0.75CrAl-x hydrotalcite precursors and were applied in the selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid (FDCA). Cr doping significantly enhanced the catalytic activity. A 95.1% 5-HMF conversion with an 88.1% FDCA selectivity was achieved over the Zn0.75CrAl-6-c catalyst at 130 °C under 0.6 MPa oxygen for 4 h. The good performance was associated with the high specific surface area and high oxygen vacancy concentration. Moreover, the Zn0.75CrAl-6-c catalyst was used for five cycles without a significant activity loss indicating excellent stability.
研究领域:
催化
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）