Petroleum Science
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2025
·
IF 6.1
Chuan-Hao Zhang,Qi Dong,Fei Wang,Ning-Yue Lu,Feng Yu,Bin-Bin Fan,Rui-Feng Li
Deep hydrogenation of polycyclic aromatic hydrocarbons (PAHs) into jet fuel is an important strategy for the upgrading of light cycle oil (LCO). Zeolite-supported metal catalysts have exhibited good catalytic performance for hydrogenation of PAHs under relatively mild conditions. However, the impacts of acidity variations in zeolite supports, arising from the differences in framework Al (Al F ) distribution on the catalytic behavior of zeolite-supported metal catalysts in the deep hydrogenation of PAHs remains unclear. Herein, two series of mesoporous ZSM-5 samples, that is ZSM-5-E- x and ZSM-5-F- x , with the differences in Al F distribution but similar Si/Al ratios, were prepared in the crystallization system with or without NaOH. The results of NH 3 -TPD, Pyridine-IR, N 2 adsorption-desorption and SEM reveal that two series of HZSM-5 samples have similar acid density and acid strength, textural properties, morphology and particle size. However, the results of XPS, 27 Al MAS NMR, 2,6-Ditert-butylpyridine-IR, catalytic cracking of 1,3,5-triisopropylbenzene and the controlled reactions as well as DFT calculation indicate that the higher enrichment degree of Al F on the external surface and the suitable arrangement mode of Al F in ten-membered ring (10-MR) of HZSM-5-F- x compared to HZSM-5-E- x in case of the similar Si/Al ratios, result in Pt/HZSM-5-F- x exhibiting remarkably-improved deep hydrogenation performance of phenanthrene (PHE) compared to Pt/HZSM-5-E- x . Particularly, the selectivity to perhydrophenanthrene (PHP) over Pt/HZSM-5-F-50 can reach above 99.0% at a conversion of PHE (>99.0%). Furthermore, Pt/HZSM-5-F-50 exhibits well reusability. This work helps to clarify the impact of Al F distribution in ZSM-5 on catalytic hydrogenation performance for PAHs, providing valuable guidance for design and development of efficient catalysts for the hydrogenation of PAHs.
研究领域:
催化化学
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石油炼制
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材料化学
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表面科学
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工业催化
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产品关联
DOI
高影响因子
Processes
·
2020
·Vol. 8
·期 10
·1273
·
IF 2.753
Sha Wen,Kai Liu,Yi Tian,Yanping Xiang,Xianxiang Liu,Dulin Yin
2,5-diformylfuran (DFF) is an important downstream product obtained by selective oxidation of the biomass-based platform compound 5-hydroxymethylfurfural (HMF). In this study, a phosphorus-doped carbon (P-C) supported vanadium phosphate oxide (VPO) catalyst was successfully prepared and showed remarkably high catalytic activity in the selective oxidation of HMF to produce DFF with air as an oxidant. The effects of the reaction temperature, reaction time, solvent, catalyst amount, and VPO loading amount were investigated. The results showed that an HMF conversion rate of 100% and a DFF yield of 97.0% were obtained under suitable conditions, and DMSO was found to be the most suitable solvent under an air atmosphere.Keywords:vanadium phosphate oxides;5-hydroxymethylfurfural;catalysis;selective oxidation;2,5-diformylfuran
研究领域:
化学工程
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催化科学
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DOI
高影响因子
Microbiome
·
2025
·Vol. 13
·期 1
·1-21
·
IF 12.7
Zhu Liuying,Zhang Zhiyi,Luo Ting,Li Hongyan,Deng Zeyuan,Li Jing,Zheng Liufeng,Liao Jinqiang,Wang Minghui,Zhang Bing
Background 2′-Fucosyllactose (2′-FL) is one of the major oligosaccharides found in human breast milk, with several recognized beneficial effects on the host. Extensive research has indicated positive effects of 2′-FL on cognitive development in the brain, yet its molecular mechanisms have remained elusive. This study aimed to assess the impact of 2′-FL on the gut-brain axis microbiota and cognitive function in growing mice, along with its potential mechanisms of action.
Results Following long-term supplementation for 4 weeks, 2′-FL was found to enhance cognitive memory function in growing mice (3 weeks old) as assessed through Y-maze, novel object recognition, and water maze tests. Analysis via 16S rRNA sequencing revealed significant alterations in gut microbiota diversity and composition induced by 2′-FL, notably increasing the relative abundance of Bacteroides and Lactobacillus genera. Additionally, 2′-FL significantly elevated levels of 5-hydroxytryptamine (5-HT) and 5-hydroxytryptophan (5-HTP) in the hippocampal tissue. However, antibiotic intervention abolished the cognitive advantage conferred by 2′-FL, highlighting the critical role of gut microbiota in mediating its effects. Similarly, short-term supplementation with 2′-FL for 7 days indicated rapid changes in gut microbiota composition preceding cognitive improvements, further suggesting a potential causal relationship between gut microbiota characteristics and cognition. Further, in vitro experiments with mouse feces suggested that 2′-FL may influence tryptophan hydroxylase levels in the gut microbiota and inhibit the activity of 5-hydroxytryptophan decarboxylase, potentially leading to increased accumulation of 5-HTP. Additionally, 2′-FL may indirectly impact tryptophan hydroxylase levels in enterochromaffin cells by promoting short-chain fatty acid production, which could support 5-HTP synthesis. Elevated 5-HTP produced by the gut system enters the bloodstream, crosses the blood–brain barrier, and may potentially enhance brain 5-HT levels.
Conclusion This study offers preliminary evidence that the cognitive-promoting effects of 2′-FL in mice may be closely associated with gut microbiota and 5-HT. The findings suggest that 2′-FL contribute to cognitive development in growing mice, potentially by modulating gut microbiota and enhancing 5-HT levels in the brain.
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研究领域:
营养科学
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神经科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Xu Chen,Wenjun Zhang,Yanmei Zheng,Lin Dong,Zupeng Chen
The photocatalytic oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid (FDCA) represents a sustainable strategy for the conversion of biomass-based platform compounds into high-value chemicals. In this work, a supramolecular self-assembly strategy is employed to synthesize tubular carbon nitride (T-MCN), and sodium ion-doped carbon nitride (Na-T-MCN) is obtained via sodium chloride-assisted thermal polymerization. The optimized catalyst demonstrates superior activity in the oxidation of 5-HMF, achieving a high yield of FDCA (90%) within 8 h. The exceptional photocatalytic performance of Na-T-MCN is attributed to the incorporation of Na+ ions and cyanamide groups, which facilitate the separation of photogenerated charges and holes. To elucidate the underlying mechanism, intermediate trapping experiments and electron paramagnetic resonance (EPR) spectroscopy are employed to investigate the dynamics of photoinduced charge separation, electron transfer, and the reaction pathway of photocatalytic oxidation of 5-HMF. The findings reveal that the key active species in the oxidation reaction are the •O2– and h+ species. This study provides a viable and efficient strategy for converting biomass platform compounds into high-value-added products.
研究领域:
材料科学
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化学工程
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可再生能源
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产品关联
DOI
高影响因子
ACS Catalysis
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2020
·
IF 12.35
Mo Zhang,Zheng Li,Xing Xin,Junhao Zhang,Yeqin Feng,Hongjin Lv
Selective production of value-added platform chemicals from renewable biomass feedstocks and their derivatives has attracted tremendous attention with high potential in addressing global problems of energy and sustainability. In this work, a lead-halide perovskite (MAPbBr3, MA = methylammonium) is utilized as a photocatalyst for selective oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) using atmospheric O2 upon visible-light irradiation. Under minimally optimized conditions, the photocatalytic conversion of HMF in acetonitrile solvent reaches 100% with a DFF selectivity of over 90%, achieving an overall furanic carbon yield of over 96%. A detailed catalytic mechanism was proposed based on various spectroscopic and experimental results, revealing that the atmospheric O2, photogenerated electrons (e–), holes (h+), •O2–, and 1O2 species together play crucial roles in the effective and selective photo-oxidation of HMF to DFF. In addition, our present photocatalytic system is also applicable for photo-oxidation of benzyl alcohol with approximately 100% conversion and benzaldehyde selectivity, providing insights for future exploration of the present catalytic system.
研究领域:
化学工程
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可再生能源
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 14
·19284-19296
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IF 2.478
Li Sirui,Zhao Hongwei,Wang He,Zhu Hang,Zhang Hehan,Yu Haitao,Yang Tianye
At present, functional materials such as metal sulfides, metal oxides and so on synthesized with metal–organic frameworks (MOFs) as the general templates or precursors in the field of gas sensing have been a new strategy to improve gas-sensing performance. In this work, a unique MOF-5-derived ZnO nanochains (NCs) sample is synthesized through a conventional solvothermal method with subsequent annealing process. The ZnO NCs-based sensor exhibits outstanding sensing performance such as fast response time (< 1 s) and high response value 34.7 toward 20 ppm triethylamine (TEA). The ZnO NCs sample was characterized by a series of methods (XRD, SEM, XPS and so on). The excellent TEA-sensing properties can be ascribed to the unique nanochain morphology and a plenty of oxygen vacancies of the ZnO crystal through the analysis of the morphology and composition of the sample. In addition, a possible growth mechanism comes up and the sensing mechanism is discussed. The superior TEA sensing performance makes the as-synthesized MOF-5 derived ZnO NCs sample a potential candidate for TEA fast detection.
研究领域:
材料科学
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化学传感器
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纳米材料合成
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Bei Jiang,Mengya Xu,Ling Zhang,Wenjing Wang,Xin Qin,Shenyan Xu,Chunyu Che,Chuanqi Zhang,Wenzhong Wang
Open-shell organic radicals, characterized by their unique spin states, typically exhibit exceptional photothermal conversion efficiency. However, the development of open-shell organic radical materials with stability and high photothermal properties remains a challenge. Among these radicals, the stable and commercialized 4-OH-TEMPO radical molecule has garnered considerable attention in various organic synthesis reactions owing to its unique redox advantages, but it shows less application comparing with the other open-shell organic radicals in photo-thermal conversion. In this study, 4-OH-TEMPO exhibits favorable photothermal properties upon combination with Cu 2 + , thus it is capable of enhancing the reaction rate of HMF oxidation to DFF by a factor of 10 under LED (400 nm). Under illumination of LED, leading to the complete conversion of HMF and the generation of DFF with a yield of 99.7 % within 30 min. Mechanism study shows that the photothermal effect facilitates the kinetic process of the reaction, and accelerated conversion of 4-OH-TEMPO to the oxidatively active species 4-OH-TEMPO + under light-induced action further increased the reaction rate. This research proffers novel insights and references for 4-OH-TEMPO mediated organic synthesis reactions and the design of free-radical photothermal materials.
研究领域:
材料科学
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有机化学
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催化
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光化学
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热工学
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产品关联
DOI
高影响因子
AICHE JOURNAL
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2021
·Vol. 67
·期 10
·e17345
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IF 3.993
Ke Wang,Sijia Liu,Runming Hao,An Du,Yang Wang
As a novel green chemical building block, it is of significance to increase the productivity of 5-hydroxymethylfurfural (HMF) derived from hexoses. In our work, a catalytic system efficiently converting glucose to HMF was designed, which is guided by catalytic coupling at multiple length scales. A catalyst from the sulfonated and carbonized glucose with aluminum loading containing Lewis and Brønsted acidic sites, along with tetrahydrofuran/H 2 O-NaCl featuring low boiling point and biphasic solvent, was introduced to the catalytic conversion of glucose. Not only the HMF yield of 75% from glucose was achieved at 140°C for 8 h but also the purity of HMF went up to 93% by facile separation and evaporation. In the reuse of the catalysts, the selectivity of HMF was basically maintained at 81% with the conversion of glucose decreasing by ca. 20% after five runs.
研究领域:
化学工程
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可再生能源
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催化科学
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DOI
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Ziyi Meng,Xu Yan,Nima Azarakhsh,Hanying Duan,Hosahalli S. Ramaswamy,Chao Wang
As an essential B vitamin, folate participates in one‑carbon metabolism. The 5-methyltetrahydrofolate (5-MTHF) avoids the drawbacks associated with folic acid and native folylpolyglutamate folate in food, thereby emerging as a superior alternative to folate supplement. To enhance the stability and digestibility of 5-MTHF, nanoliposome (NL) was modified using a layer-by-layer self-assembly method with chitosan (CH) and pectin (P). Chitosan–nanoliposome (CH–NL) and pectin–chitosan–nanoliposome (P–CH–NL) were created, each featuring a core–shell structure. P–CH–NL achieved an encapsulation efficiency of 64.62 %, loading efficiency of 1.05 mg/g, and particle size of 285.86 nm. It exhibited better physical stability and 5-MTHF retention (>80 %) under various conditions, including salt and pH variations, as well as oxidative, thermal, fermentation, and UV stress. During in vitro digestion, P–CH–NL protected 5-MTHF until it was released into the small intestine. This study highlighted the application prospects of multilayer liposome-loaded 5-MTHF as a stable, highly digestible folate supplement.
研究领域:
营养学
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生物化学
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药剂学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL TECHNOLOGY
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2023
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IF 2.8
Jiaying Zhu,Yanyang Wu,Bin Wu,Kui Chen,Lijun Ji
m-Cresol and p-cresol are widely used in medicine and pesticides as important chemical intermediates. They are generally produced as a mixture in industry and are difficult to separate due to the similarities in both chemical structures and physical properties. The adsorption behaviours of m-cresol and p-cresol on zeolites (NaZSM-5 and HZSM-5) with different Si/Al ratios have been compared by static experiments. Selectivity on NaZSM-5(Si/Al = 80) could be greater than 6.0. Adsorption kinetics and isotherms were investigated in detail. The kinetic data was correlated by PFO, PSO, and ID models, the NRMSE of which were 14.03%, 9.41%, and 21.11%, respectively. In the meanwhile, according to the NRMSE of Langmuir (6.01%), Freundlich (57.80%), D-R (1.1%), and Temkin (0.56%) isotherms, adsorption on NaZSM-5(Si/Al = 80) was mainly a monolayer and chemical adsorption process. It was endothermic for m-cresol and exothermic for p-cresol. The Gibbs free energy, entropy, and enthalpy were calculated accordingly. The adsorption of cresol isomers on NaZSM-5(Si/Al = 80) were both spontaneous, and it was exothermic (ΔH = −37.11kJ/mol) for p-cresol while endothermic (ΔH = 52.30kJ/mol) for m-cresol. Additionally, ΔS were respectively −0.05 and 0.20 kJ·mol−1·K−1for p-cresol and m-cresol, which were both close to zero. The adsorption was mainly driven by enthalpy. The result of breakthrough further demonstrated m-cresol and p-cresol could be separated effectively by NaZSM-5(Si/Al = 80). Additionally, the selectivity increased from 7.53 to 14.72 after four cycles regeneration with 9.95% and 53.96% decreases in the adsorption amounts for m-cresol and p-cresol, respectively. In conclusion, NaZSM-5(Si/Al = 80) could be a feasible adsorbent for the separation of m-cresol and p-cresol.
研究领域:
化学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 8
·2479-2488
·
IF 6.1
Yiwei Zhao,Chao Zhang,Shuangxi Xing,Zuhang Jin,Tingting Xiao
Biomass upgrading by electrochemical means is of great scientific significance due to the environmentally friendly procedures and low energy consumption costs. Herein, electro-oxidation (ECO) of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) and electro-reduction (ECR) to 2,5-furandimethanol (BHMF) with high yield have been studied on CuNi-based bimetallic catalysts. Ni(OH)2-NCF and Cu-NCF achieved 99% and 96.5% yields at a HMF concentration of 10 mM in ECO and ECR, respectively. During ECO, the presence of Cu2O in the catalyst facilitated the adsorption of HMF, and the formed NiOOH in its vicinity promoted the proton coupled electron transfer process and thus resulted in the fast capture and removal of H protons. The presence of Cu–O–Ni linkages in the Ni(OH)2-NCF electrocatalyst was beneficial for the formation of Ni3+ active sites. During ECR, the synergistic effect between Cu and Ni species also contributed to the generation and spillover of Hads species and then enhanced the reactivity.
研究领域:
电化学
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催化
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生物质转化
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材料科学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
·
IF 3.9
Qian-Wen Lu,Qing He,Qing-Shuai Zhang,Da Sheng,Song-Hai Wu,Yong Liu,Xu Han
Although thermocatalytic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-formylfuran (DFF) by O2 is an important reaction, achieving a high yield of DFF is still challenging. In this study, a series of MoxCuy/NH2-SBA-15 are prepared, and Mo3Cu1/NH2-SBA-15 exhibits the desirable catalytic reactivity with a complete conversion of HMF and high selectivity of 94.4% toward DFF. XPS and EPR analyses indicate that the abundant oxygen vacancies (Ov) and Cu(I) are the reactive sites for O2 activation. Quenching experiments and various characterizations reveal that superoxo (≡Cu(II)/Ov-OO•) on the surface of catalyst, instead of •OH and O2•–, are the primary oxidizing species to abstract H from HMF to RCH2-O•, accompanied by the formation of ≡Cu(II)/Ov-OOH peroxo. Meanwhile, the doped Mo(V/VI) further activates ≡Cu(II)/Ov-OOH peroxo to form ≡Mo-(η2-O2) peroxo, which significantly promotes the oxidation selectivity of RCH2-O• toward DFF via the H-abstraction pathway. This study provides new insight on selective thermal-oxidation of biomass-derived compounds to high-value-added chemicals via regulating reactive oxidizing species on the surface of catalysts.
研究领域:
化学工程
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催化科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）