CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Wenlin Li,Qijia Chen,Xin Ning,Jiajun Zheng,Ke Liang,Lei Han
Self-pillared nano-ZSM-5 (SPZ) boosts 1-hexene oligomerization stability for SAF. • Accessible strong Brønsted acid sites promote branching and cyclization reactions. • 2D-GC–MS shows C12–C17 products dominate while aromatization remains minor. • Lower N 2 flow favors deeper oligomerization, enriching heavier and jet-fuel-range products. • Oligomer-derived soft coke drives deactivation and enables partial N 2 reactivation. Developing high-performance catalysts for the oligomerization of bio-derived olefins into sustainable aviation fuels (SAF) is of paramount importance. However, simultaneously achieving high catalytic activity and selectivity while mitigating the rapid deactivation of nano-zeolites remains a formidable challenge. To drive the efficient production of SAF, a novel self-pillared nano-ZSM-5 (SPZ) zeolite featuring an enriched acidic profile was designed in this work, delivering exceptional activity, selectivity, and stability for 1-hexene oligomerization. Compared with nano-sized ZSM-5 featuring intercrystalline mesoporous voids (NSZ), the SPZ catalyst significantly improved catalytic performance, increasing 1-hexene conversion from 20% to 61% at 240 °C while prolonging catalyst lifetime. DTBPy-FTIR, and TEOS passivation collectively support the involvement of external and pore-mouth acid sites in 1-hexene conversion and further indicate that these accessible sites may also promote secondary cracking. Semi-quantitative, area-normalized 2D-GC–MS responses were dominated by C12-C17 oligomer-derived species and showed extensive branching and cyclization, whereas aromatics remained minor. Variation of the N 2 flow rate shifted the recovered product distribution through coupled changes in reactant dilution, nominal contact time, and product stripping. Deactivation was associated mainly with retained oligomer-derived soft coke. These results identify accessible acidity and transport as coupled descriptors for tuning unsaturated jet-fuel-range precursors over hierarchical ZSM-5. Download: Download high-res image (220KB) Download: Download full-size image
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Chong Yang,Yuyao Xie,Shimin Xu,Yuwei Luo,Huaiyu Zhu,Hui Wang
Liquid–liquid equilibrium (LLE) data for the ternary system of dodecane + 1-methylnaphthalene + solvent were experimentally determined at 298.2 K and 101.3 kPa using N-methylimidazole, trimethyl phosphate, furfural, N,N-dimethylacetamide, benzyl alcohol, triethyl phosphate, and ethylene glycol as extractants. Using the obtained LLE data, the distribution constant, separation factor, and performance index were calculated to evaluate the performance of these extractants in extracting and separating 1-methylnaphthalene from dodecane. The reliability of the LLE data was examined using the Hand and Othmer–Tobias equations, with the correlation coefficients of the fitted equations exceeding 0.96. Furthermore, the nonrandom two-liquid (NRTL) and universal quasichemical (UNIQUAC) thermodynamic models were used to correlate the LLE data and obtain binary interaction parameters. The root-mean-square deviations between the experimental and calculated results were 0.15–0.97 for NRTL and 0.13–1.05 for UNIQUAC. The derived binary interaction parameters were validated using GMcal_TieLinesLL, a specialized software package for LLE calculations. These findings highlight that both the NRTL and UNIQUAC thermodynamic models can accurately describe the liquid–liquid phase equilibrium behavior of ternary systems, providing a theoretical basis for the industrial application of catalytic cracking diesel extraction and aromatics removal technology.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xinlei Shen,Chun Tong,Haikui Zhu,Yigang Qian,Lixi Wang
(1- y )Ca 0.97 Sr 0.03 B 2 O 4 - y TiO 2 composite ceramics were produced through a solid-phase reaction procedure, ensuring that all samples had a uniform and dense microstructure, where each constituent phase exhibited complete crystallinity. Their crystal structures, microwave dielectric properties, microstructures, and co-sintering performance at low temperatures were thoroughly investigated. To enhance the thermal stability of the resonant frequency, rutile TiO 2 ( τ f = +450 ppm/°C) was introduced as an additional phase during the preparation of the composite ceramics. According to the XRD analysis, the characteristic peak signals became more pronounced as the content of rutile TiO 2 in the composite gradually rose, and the peak intensity was found to vary linearly with the relative content of TiO 2 . SEM analysis revealed that the TiO 2 additions ( y = 0.05, 0.10, and 0.15) resulted in tightly arranged grains, the absence of visible pores, and a high degree of densification. However, as the TiO 2 content increased ( y = 0.20, 0.25), pores appeared, grain boundaries became more pronounced, and densification decreased. At y = 0.15 and a sintering temperature of 900 °C, the best dielectric properties were achieved for the (1- y )Ca 0.97 Sr 0.03 B 2 O 4 - y TiO 2 composite ceramics: ε r = 7.61, Q×f = 33,983 GHz, and τ f = +3.51 ppm/°C. By introducing TiO 2 , the initially negative τ f was effectively adjusted toward zero, thereby achieving greater thermal reliability. Additionally, the absence of interfacial chemical reactions between the composite ceramic and the silver after co-firing indicates that the material possesses favorable chemical compatibility with silver, demonstrating strong applicability in LTCC technology.
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CHINESE CHEMICAL LETTERS
·
2016
·Vol. 28
·期 1
·49-54
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IF 1.947
Qi-Feng Li,Chao Wang,Xiao-Zheng Lan
Latent heat storage performance of a layered perovskite-type compound, 1-C 14 H 29 NH 3 ) 2 ZnCl 4 (C 14 Zn), embedded in a series of silica gel (SG) with pore sizes of d = 15–200 nm is investigated using differential scanning calorimetry (DSC), and powder X-ray diffractions (XRD). C 14 Zn in the nanopores of silica gel shows size-dependent phase transition temperature, enthalpy change and supercooling. They have a stable transition temperature and heat capacity at each size in a short-term thermal cycling. Similar X-ray diffraction patterns are observed for the nano-sized and the bulk C 14 Zn. The encapsulation of a phase change material in nanopores is a new way of tuning its thermal energy storage properties for a wider range of temperature regulation.
研究领域:
材料科学
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热力学
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纳米科技
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能源存储
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功能材料
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PHYSICAL REVIEW B
·
2026
·Vol. 113
·期 14
·144407
·
IF 3.9
Fuguang Han,Jun Li,Huantong Wu,Shuang Wang,Zhengyu Zhang,Zegeng Chen,Zhongxiang Zhou
The application of most multiferroic ceramic composites is severely hindered by their zero or near-zero magnetoelectric response under zero magnetic field. Currently, there has been no in-depth theoretical exploration into the causes of self-biased magnetoelectric coupling effects in these ceramics or how to regulate them. In this study, we report the observation of self-biased magnetoelectric coupling effect in a $(1\ensuremath{-}x)\mathrm{BaTi}{\mathrm{O}}_{3}\ensuremath{-}(x)\mathrm{CoF}{\mathrm{e}}_{2}{\mathrm{O}}_{4}(x=0.1,0.2,0.3,0.4\phantom{\rule{0.16em}{0ex}}\mathrm{and}\phantom{\rule{0.16em}{0ex}}0.5)$ particle composites. P-E and M-H hysteresis loops confirmed the presence of both ferroelectricity and ferromagnetism in the $(1\ensuremath{-}x)\mathrm{BaTi}{\mathrm{O}}_{3}\ensuremath{-}(x)\mathrm{CoF}{\mathrm{e}}_{2}{\mathrm{O}}_{4}$ composites. By measuring the magnetoelectric voltages of the composites, we confirmed the existence of self-biased magnetoelectric coupling effects in the $\mathrm{BaTi}{\mathrm{O}}_{3}$ and $\mathrm{CoF}{\mathrm{e}}_{2}{\mathrm{O}}_{4}$ phases. The highest self-biased magnetoelectric coupling coefficient (1.65 mV/(Oe cm)) was found at $x=0.3$ composite sample. Based on nonlinear magnetoelectric coupling theory, we established a correlation model between magnetic parameters and magnetoelectric coupling coefficients. We demonstrated that the origin of self-biased magnetoelectric coupling lies in the hysteresis dependence of magnetization and proposed that regulating magnetic parameters can effectively control the self-biased magnetoelectric coupling effect. Finite element simulations visually demonstrate displacement variations under different magnetic field conditions, enabling more intuitive observation of changes in internal magnetization and displacement within the material. This lays the foundation for developing high-performance self-biased magnetoelectric coupling devices.
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TOXICOLOGY AND APPLIED PHARMACOLOGY
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2023
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IF 3.8
Hancheng Huang,Shuchun Wei,Xiaohan Wu,Mengke Zhang,Benhong Zhou,Debin Huang,Weiguo Dong
The pathophysiological mechanism of hepatic fibrosis (HF) is related to the excessive activation of the DNA repair enzyme poly ADP-ribose polymerase-1 (PARP-1). The drugs, targeting PARP-1, are scarce. Therefore, the lead compound, moderately inhibiting PARP-1, with anti-HF properties should be identified. This study screened dihydrokaempferol (DHK) from herbs based on preliminary studies to intervene in a CCl 4 -induced liver injury and HF model in mice. In vitro , the expression levels of PARP-1-regulated related proteins and phosphorylation were examined. The binding pattern of DHK and PARP-1 was analyzed using molecular docking and molecular dynamics platforms. The results showed that DHK could significantly attenuate CCl 4 -induced liver injury and HF in mice. Moreover, it could also attenuate the toxic effects of CCl 4 on HepG2 and inhibit α-SMA and Collagen 1/3 synthesis of LX-2 cells in-vitro . Molecular docking revealed that DHK could competitively bind to the Glu-988 and His-862 residues of the upstream DNA repair enzyme PARP-1, moderately inhibiting its overactivation. This led to maintaining NAD + levels and energy metabolism in hepatocytes and inhibiting the activation of PARP-1-regulated downstream signaling pathways (TGF-β1, etc. ), related proteins (p-Smd2/3, etc. ), and inflammatory mediators while acting indirectly. Thus, DHK could attenuate CCl 4 -induced liver injury and HF in mice in a different mechanism from those of the existing reported flavonoids. It was associated with inhibiting the expression of downstream pathways and related cytokines by competitively binding to PARP-1. This study might provide a basis and direction for the design and exploration of anti-HF lead compounds.
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-15
·
IF 10.2
Su Runping,Gu Jingjing,Sun Juanjuan,Zang Jie,Zhao Yuge,Zhang Tingting,Chen Yingna,Chong Gaowei,Yin Weimin,Zheng Xiao,Liu Bingbing,Huang Li,Ruan Shuangrong,Dong Haiqing,Li Yan,Li Yongyong
Antigen self-assembly nanovaccines advance the minimalist design of therapeutic cancer vaccines, but the issue of inefficient cross-presentation has not yet been fully addressed. Herein, we report a unique approach by combining the concepts of “antigen multi-copy display” and “calcium carbonate (CaCO 3 ) biomineralization” to increase cross-presentation. Based on this strategy, we successfully construct sub-100 nm biomineralized antigen nanosponges (BANSs) with high CaCO 3 loading (38.13 wt%) and antigen density (61.87%). BANSs can be effectively uptaken by immature antigen-presenting cells (APCs) in the lymph node upon subcutaneous injection. Achieving efficient spatiotemporal coordination of antigen cross-presentation and immune effects, BANSs induce the production of CD4 + T helper cells and cytotoxic T lymphocytes, resulting in effective tumor growth inhibition. BANSs combined with anti-PD-1 antibodies synergistically enhance anti-tumor immunity and reverse the tumor immunosuppressive microenvironment. Overall, this CaCO 3 powder-mediated biomineralization of antigen nanosponges offer a robust and safe strategy for cancer immunotherapy.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Kunjie Wang,Yan Jing,Shuang Gao,Xianrong Liu,Bingxin Liu,Yongcheng Li,Peng Zhang,Benhua Xu
Implanting the octahedral phase (1 T) into the hexagonal phase (2H) of the molybdenum disulfide (MoS 2 ) matrix is considered one of the effective methods to enhance hydrogen evolution reaction (HER) performances of MoS 2 . In this paper, hybrid 1 T/2H MoS 2 nanosheets array was successfully grown on conductive carbon cloth (1 T/2H MoS 2 /CC) via facile hydrothermal method and the 1 T phase content in 1 T/2H MoS 2 is regulated to gradually increase from 0 % to 80 %. 1 T/2H MoS 2 /CC with 75 % 1 T phase content exhibits optimal HER performances. The DFT calculation results show that S atoms in 1 T/2H MoS 2 interface exhibit the lowest hydrogen adsorption Gibbs free energies (ΔG H* ) compared with other sites. The improvement of HER performances are primarily attributed to activating the in-plane interface regions of the hybrid 1 T/2H MoS 2 nanosheets. Furthermore, the relationship between 1 T MoS 2 content in 1 T/2H MoS 2 and catalytic activity was simulated by a mathematical model, which shows that the catalytic activity presents a trend of increasing and then decreasing with the increase of 1 T phase content.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 27
·71360-71370
·
IF 5.8
Chen Yuanyao,Wang Jingming,Yu Zhiquan,Xiao Lin,Xu Jia,Zhao Kai,Zhang Huiping,Shang Xuejun,Liu Chunyan
2,5-Dichloro-1,4-benzenediol (2,5-DCBQ) is a putative disinfection by-product that belongs to the halogenated benzoquinone class. However, its developmental toxicity and related mechanism remained unclarified. In our study, we used zebrafish embryos as the model and exposed them to graded concentrations of 2,5-DCBQ (100, 200, 300, 400 μg/L). We found that the rate of epiboly abnormalities increased significantly in a concentration-dependent manner. The results of whole-mount in situ hybridization (WISH) indicated that the expression patterns and levels of chordin (dorsoventral marker), foxa2 (endodermal marker), eve1 (ventral mesodermal marker), and foxb1a (ectodermal marker) were altered, suggesting that 2,5-DCBQ might affect the germ layer development of zebrafish embryos. Integrated transcriptomic and metabolomic analyses were adopted to explore the molecular mechanisms of embryonic developmental delays. The results showed that 2,5-DCBQ exposure induced 1163 differentially expressed genes (DEGs) and 37 differential metabolites (DEMs). Bioinformatic analysis enriched the most affected molecular pathways (Wnt signaling pathway, cell adhesion molecules, actin cytoskeleton regulation) and metabolic pathways (purine metabolism, aminoacyl-tRNA biosynthesis, arginine and proline metabolism) in zebrafish embryos. To summarize, our findings broadened the molecular mechanisms of 2,5-DCBQ embryotoxicity through multi-omics and bioinformatic analyses. Graphical Abstract
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2023
·
IF 6.1
Shuqi Guo,Qiang Zhao,Hongbo Hu,Wei Wang,Muhammad Bilal,Qiang Fei,Xuehong Zhang
Phenazine-1-carboxylic acid (PCA) secreted by Pseudomonas chlororaphis has been commercialized and widely employed as an antifungal pesticide. However, it displays potential hazards to nontarget microorganisms and the environment. Although the PCA degradation characteristics have received extensive attention, the biodegradation efficiency is still insufficient to address the environmental risks. In this study, an engineered Pseudomonas capable of degrading PCA was constructed by introducing heterologous PCA 1,2-dioxygenase (PcaA1A2A3A4). By integrating the PCA degradation module in the chemical mutagenesis mutant P3, 7.94 g/L PCA can be degraded in 60 h, which exhibited the highest PCA degradation efficiency to date and was 35.4-fold higher than that of the PCA natural degraders. Additionally, PCA was converted to 1-methoxyphenazine through structure modification by introducing the functional enzymes PhzSPa and PhzMLa, which has good antifungal activity and environmental compatibility. This work demonstrates new possibilities for developing PCA-derived biopesticides and enables targeted control of the impact of PCA in diverse environments.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yichao Liang,Chao Xiong,Xiantai Zhou,Can Xue,Hongbing Ji
A Mo-based catalyst (Mo/CBC) was successfully prepared by a hydrothermal method in which the carbon support was derived from agricultural waste . Physio-chemical properties showed that Mo/CBC had uniformly dispersed particles, large pores, excellent thermal stability and high molybdenum loading. The catalytic performance was systematically investigated, including types of loading metal, oxidants, catalyst usage, substrate concentration, oxidant ratio, reaction temperature, reaction time, reusability, and scalability. Mo/CBC exhibited excellent catalytic performance in the epoxidation of 1-hexene with 98.5% of 1-hexene oxide selectivity, 94.4% of 1-hexene conversion and 99.1% of TBHP consumption efficiency under optimal reaction conditions. The catalytic performance of Mo/CBC did not decrease significantly after five cycles, showing excellent cycle stability. In addition, the scalability showed that Mo/CBC had a good universality for linear olefins, cyclic olefins, aromatic olefins and so on. Thermodynamics showed that the epoxidation system presented as an endothermic and disordered process. Kinetics study showed the rate of the reaction obeyed the pseudo-second-order model with an apparent activation energy of 75.2 kJ/mol. The mechanism study revealed that Mo 4+ species played a key role in the reaction system, promoting the generation of peroxyl radical intermediates from TBHP to directly epoxidize 1-hexene into 1-hexene oxide.
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APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Yi-Tian Wang,Si-Ming Wu,Guo-Qiang Luo,Ge Tian,Bo-Jun Zeng,Li-Ying Wang,Shi-Tian Xiao,Jing-Xian Wu,Ao Wu,Kang-Jun Wu,Silvia Lenaerts,Xiao-Yu Yang
Dual active sites from acidic zeolite and Pd are not only capable of catalyzing multiple type of reactions, but could also generate unique functions owing to the synergy between metals and acidic sites. However, there are only a few reports on the investigation of the synergy of acid/Pd dual sites in TS-1. Herein, TS-1 confined Pd catalyst with mesoporous silica shell (Pd@TS-1 @meso-SiO 2 ) has been successfully synthesized and its synergy effect contributes to the enhanced conversion rate (19.2%) and selectivity (74.7%) on styrene oxidation . The interaction between Pd and TS-1 has been investigated by EPR and 1 H NMR techniques, the experimental measurements show an obvious change in the signal distribution of weakly acidic terminal hydroxyls and hydrogen-bonding silanols. The schematic illustration of selective styrene oxidation in the model of Pd@TS-1 @meso-SiO 2 is proposed to clarify the synergistic effect on styrene oxidation between TS-1 and Pd nanoparticles at an atomic-/nanoscale.
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危险品化学品经营许可证（带存储）