Molecular Catalysis
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2026
·
IF 4.3
Dandan Zuo,Wuyu Wang,Miaojia Song,Peng Zheng,Sa Li,Qi Zhang,Xinghua Zhang,Longlong Ma
A ternary Cu-Nb/Al-MCM-41 catalyst achieves 99.60 % 2-methylfuran selectivity at 160 °C under atmospheric H2. • Al incorporation enhances metal dispersion and generates balanced Brønsted-Lewis acidity for controlled C O hydrogenolysis. • Nb promotion enables efficient H2 activation and strengthens Cu-Nb interfacial electronic coupling. • The catalyst exhibits excellent long-term stability and can operate continuously in a fixed bed for 500 h. The selective hydrodeoxygenation (HDO) of furfural (FAL) into 2-methylfuran (2-MF) is a crucial transformation for upgrading lignocellulosic biomass into liquid fuels. Herein, a series of Cu-Nb catalysts supported on mesoporous MCM-41 were developed. Over the optimized Cu-Nb/Al-MCM-41 catalyst, FAL was completely converted and the selectivity of 2-MF was 99.60 % at only 160 °C under ambient hydrogen pressure. Structural analyses revealed that Al incorporation reinforced metal-support interactions, enhanced Cu dispersion, and producing moderate Brønsted-Lewis acid sites, which synergistically facilitated hydrogen transfer and selective C O bond cleavage. In situ DRIFTS and XPS measurements confirmed a tandem hydrogenation-dehydration pathway proceeding via furfuryl-alcohol (FOL) intermediates, where Nb promoted H 2 activation and Al-derived acid centers accelerated dehydration at interfacial Cu-Nb-Al sites. The catalyst maintained high activity and selectivity during 500 h time-on-stream in a fixed-bed reactor, although slight deactivation was observed after prolonged operation. These findings establish a clear structure-function correlation between electronic modulation and acid-metal synergy, offering a sustainable strategy for efficiently producing furan-based biofuels under mild conditions. Download: Download high-res image (291KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Nan Wang,Yaxin Deng,Zhijie Liao,Qiyu Liu,Jianglin Liu,Xuliang Lin,Zhenyao Wang,Xueqing Qiu
Depolymerizing technical lignin into aromatic monomers is a promising route to renewable aromatic precursors for sustainable aviation fuels, yet it is hindered by the low reactivity of condensed C O and C C linkages. In this work, Al-modified silica nanosphere supported Ni catalysts (Ni/Al-SiO 2 ) are developed for selective lignin hydrogenolysis. The optimal Ni/Al 2 -SiO 2 achieves complete β-O-4 bond conversion and fully transforms 2-phenoxy-1-phenylethanol into phenol and ethylbenzene with yields exceeding 99%. In contrast, commercial Ru/C mainly produces ring-saturated products. Ni/Al 2 -SiO 2 also accelerates the hydrogenolysis of the β-1 bond in 1,2-diphenylethane, delivering high aromatic selectivity with no detectable cycloalkanes. For technical lignin, Ni/Al 2 -SiO 2 affords a 23% aromatic-monomer yield, outperforming that of Ru/C (19%), and maintaining consistent performance across various types of technical lignin. The incorporation of Al generates Lewis-acid sites and polar oxygen motifs, which enrich and polarize the substrates. Adjacent Ni 0 sites dissociate H 2 to generate reactive hydrogen, while strengthened interfacial adsorption, reduced key barriers, and promoted hydrogen spillover enable rapid hydrogenative capping of reactive intermediates, suppressing condensation and preserving aromatic selectivity. This work provides a non-noble-metal interface-engineering strategy for reductive depolymerization of technical lignin into aromatic-rich sustainable aviation fuel precursors.
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Case Studies in Thermal Engineering
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2026
·
IF 6.6
Kang Lei,Wen-hao Wang,Xian-die Zhang,Ji-yu Lu,Xing-liang Wu,Sen Xu,Xiang Zhou
This study successfully fabricated core-shell structured Al@ADN/PVDF energetic composites through electrostatic spraying, with nano-aluminum (n-Al) cores encapsulated by an ammonium dinitramide (ADN)/polyvinylidene fluoride (PVDF) composite shell. The morphology and structure were systematically characterized using scanning electron microscopy (SEM), scanning transmission electron microscopy (STEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). Thermal decomposition behavior was investigated through thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), with corresponding kinetic parameters calculated. Combustion processes were monitored via high-speed imaging, while ignition and combustion performance were evaluated under both ambient and confined environments. The results show that n-Al particles are uniformly encapsulated by a continuous ADN/PVDF composite shell. Compared to physically mixed mixture, the Al@ADN/PVDF composites exhibit a 6.7% reduction in the PVDF decomposition stage mass loss and demonstrate a 24% reduction in decomposition activation energy. Furthermore, Al@ADN/PVDF composites demonstrate superior combustion characteristics, including 102% higher maximum pressure, 128% faster pressurization rate, 19% shorter ignition delay time and 17% shorter burning time. The core-shell Al@ADN/PVDF architecture provides an innovative approach for optimizing the energetic potential of aluminum in both solid propellant and pyrotechnic applications.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Yi Yang,Yaohui Zhu,Xijia Zhou,Xiaowu Hu,Zhirong Yang,Deqiu Zou
Aluminum–silicon (Al–Si) alloys, due to their excellent heat storage density and thermal conductivity, are ideal candidates for high-temperature phase change materials (PCMs). However, metal-based PCMs are prone to leakage and corrosion during melting, which affects their stability. Traditional ceramic encapsulation suffers from poor thermal conductivity, a large mass ratio, and a lack of latent heat storage capacity, limiting its ability to meet the demands of efficient energy storage. This study proposes a novel design of a macro-capsule encapsulated with microencapsulated phase change materials (MEPCMs). By introducing MEPCMs into the outer shell of the macrocapsules, the system gains latent heat storage capability, increasing the mass content of the heat storage medium within the capsule and forming a dual heat storage unit of “core + shell”. Both the macrocapsules and the microcapsules are designed with thermal expansion cavities, effectively alleviating the volume expansion during the phase change process. The resulting macrocapsules exhibit a latent heat storage density of 420.9 J g−1 with an encapsulation efficiency of 86.8%. Within the operating temperature range of 500–700 °C, the maximum total thermal storage density reaches 630.7 J g−1. In addition, the thermal conductivity of the composite shell is 4.891 W m−1 K−1, representing a 217% increase compared with conventional ceramic encapsulation. After 100 thermal cycles, the latent heat retention remains as high as 99.2%, indicating that the developed macrocapsules have good potential for high-temperature thermal applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Qiye Lu,Jing Liu,Guanyi Chen,Beibei Yan,Zhanjun Cheng,Weiming Yi
Conventional biodiesel production relies on external heating, requiring high temperatures and strict control over system water content. This work prepared a magnetic lignin-based heterogeneous acid catalyst Fe 3 O 4 -LS/100-Al using sodium lignosulfonate as support via co-precipitation and impregnation, with Lewis acid sites, and applied it in electrolysis-assisted esterification for biodiesel. The catalyst showed a specific surface area of 115.63 m 2 /g and saturation magnetization of 29.98 emu/g, enabling efficient acid loading and rapid magnetic separation. Under RSM-optimized conditions (catalyst of 6.8 wt%, MOAMR of 12.5:1, voltage of 45.4 V, water content of 4.7 wt%), oleic acid conversion reached 95.25%. Low activation energy (36.04 kJ/mol) confirmed high catalytic activity, and 71.38% conversion was retained after seven cycles. Results prove electrolysis assistance enables efficient, ambient-temperature biodiesel synthesis.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Jawad Ahmad Jrar,Tao Sunle,Muhammad Bilal,Faheem K. Butt,Alauddin,Muhammad Faizan,Imed Boukhris,Xiaozhi Wang,Yongcai Zhang,Jianhua Hou
Photocatalytic water splitting and CO 2 reduction offer renewable pathways for generating green fuels. Nevertheless, traditional photocatalysts are often limited by rapid electron-hole recombination. To address this difficulty, we devised a one-step thermal calcination method that concurrently doped graphitic carbon nitride (g-C 3 N 4 ) with aluminum and generates Al 2 O 3 in situ, an Al-doped g-C 3 N 4 heterojunction. Upon excitation by visible light, photo-excited electrons in Al-doped g-C 3 N 4 transfer to the surface Al 2 O 3 nano domains, which act as an electron sink due to their defective and reduced bandgap structure, and holes remain on g-C 3 N 4 . The effective charge separation is facilitated by interfacial band bending and the consequent internal electric field at the heterojunction that collectively inhibits electron-hole recombination and extends charge-carrier lifetimes for redox processes. The Al-doped g-C 3 N 4 /Al 2 O 3 catalyst attains a hydrogen evolution rate 9.4 times greater and a CO 2 reduction rate 6.5 folds greater than pristine CN when exposed to visible-light illumination. The improvement in performance highlights the capability of our single-step designed photocatalyst for solar-driven hydrogen production and CO 2 -to-fuel conversion, supporting the goal of carbon-neutral fuels and the progress of renewable green energy solutions.
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RSC Advances
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2026
·Vol. 16
·期 32
·29502-29514
·
IF 6.1
Shuman Gao,Xinxin Wang,Shaolei Gao,Mohammad Fahda,Dongyue Wang,Haijun Yu,Zijian You,Xiuning Liu,Liang Qi,Feng Shao,Peng Lu,Valentin Valtchev
JZO zeolite, the first stable aluminosilicate extra-large-pore zeolite, bridges the long-standing gap between microporous and mesoporous zeolites, offering highly accessible pore systems that are beneficial for molecular diffusion, active-site accessibility, and the processing of bulky molecules. However, the control of zeolite framework composition is limited, precluding its use in processes that require different acidic and ion-exchange properties. Here, JZO zeolites with tunable framework Si/Al ratios of ca. 15, 30, and 50 were successfully synthesized through precise adjustment of synthesis parameters, thereby broadening the synthesis window of this intriguing zeolite. A series of JZO zeolites was synthesized via a combination of the seed-assisted and the “deficient fluoride” methods. The crystallization kinetics of JZO was prominently boosted compared to the seed-free and fluoride-free counterpart systems, thanks to the accelerated formation of primary building units of JZO. Comprehensive characterization methods were employed to unveil the concerted role of seeds and fluoride ions. Dimethoxymethane carbonylation to methyl methoxyacetate reaction, a promising alternative route for producing degradable plastic monomers, was evaluated over JZO zeolites, and high activity (ca. 58%) and selectivity (ca. 84%) were achieved in JZO zeolite with Si/Al = 30 obtained by seed-assisted approach over a time-on-stream (TOS) test of 50 h. The product distribution could be rationally controlled by adjusting zeolite compositions. This work expands the viability of JZO zeolite synthesis and lays the foundation for practical applications.
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PubMed
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 24
·e02076
·
IF 2
Long Guan,Lin Li,Xin Cheng,Kefei Lu,Hao Zhou,Binbin Zhang,Erhai An,Hua Fang,Peng Deng
Graphical Synergistic catalysis ignition and combustion reaction mechanism of nanothermite Al/Bi2O3 with DAP-4 as additives. Aluminium/bismuth trioxide (Al/Bi 2 O 3 ), as a class of important and interesting nanothermite, had received much attention in the field of energetic materials. However, enhancing the ignition and combustion performance of Al/Bi 2 O 3 is still a great challenge. In this work, energetic perovskite DAP-4 was used to design and fabricate the ternary composites Al/Bi 2 O 3 /DAP-4 with the different contents of DAP-4 additives. The micromorphology and structure of composites Al/Bi 2 O 3 /DAP-4 were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The ignition and combustion performances of composites Al/Bi 2 O 3 /DAP-4 were studied by electric heating ignition apparatus. The results showed that energetic perovskite DAP-4 was introduced to reduce the ignition energy of Al/Bi 2 O 3 and promote the combustion reaction of Al metal particles. With 10wt% DAP-4 added, Al/Bi 2 O 3 /DAP-4 sample showed a more durable combustion process for ∼270 ms. And with the contents of DAP-4 increased, the combustion time shortened and the burning intensity had improved. The intensity of flame combustion reaches the maximum when 30wt% DAP-4 is added. The main thermal decomposition gas products of Al/Bi 2 O 3 /DAP-4 composite are CO 2 , HCl, H 2 O, and so on. A synergistic catalysis ignition and combustion reaction mechanism of Al/Bi 2 O 3 with DAP-4 as additives was proposed. DAP-4 ignited by lower ignition energy could trigger nanothermite Al/Bi 2 O 3 . Bi 2 O 3 particles can reduce the thermal decomposition temperature of DAP-4, which accelerated the combustion reaction of nanothermite Al/Bi 2 O 3 with DAP-4 as additives. This work offered a new idea for design and application of nanothermite with high-performance catalysis additives.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jianyi Liu,Yifei Wang,Heng Li,Xiaoyuan Zhang,Minxiang Zeng,Bingdi Cao,Yu Liu,Liping Qiu,Tao Zhang,Jinfeng Lu
Currently, the availability of defluoridativel materials to simultaneously achieve the high adsorption capacity and selectivity in complex aquatic environments remains limited. To this end, we constructed an aluminum-carbon composite (Al@C) with a near-network/highly interconnected microporous structure via carbonizating Al-based metal–organic frameworks (Al-MOF), for the selective and efficient elimination of F − in water environment. Results indicated that Al@C composite exhibited higher F − adsorption capacity (985.1 mg·g −1 ), outperforming the most reported adsorbents. Notably, Al@C maintained high selectivity for F − adsorption (97.8 %) even in the presence of high concentration of competing ions (SO 4 2− , CO 3 2– , HCO 3 – , Cl − , PO 4 3− , and NO 3 – ) and wide pH range (3–10). The superior adsorption capacity and selectivity were primarily attributed to the dual-ligand exchange mechanism, involving ligand exchange between F − and lattice oxygen to form Al-F bonds, and interaction between F − and carbon-based functional groups generating F-C-F/C-F bonds. Additionally, the heterogeneous diffusion process driven by surface adsorption and transition from carbon bond energies to higher binding energies induced by carbonization strategy, collectively strengthen the immobilization of F − . Overall, the work further provides an innovation, green, and low-energy solution for F − removal in environmental water treatment.
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PubMed
高影响因子
Laser & Photonics Reviews
·
2021
·Vol. 15
·期 11
·2100392
·
IF 13.138
Jianwei Qiao,Yayun Zhou,Maxim S. Molokeev,Qinyuan Zhang,Zhiguo Xia
It remains a critical challenge to develop narrow-band emitters for wide color gamut displays. Herein, it is designed by the selective site occupancy engineering and an unprecedented narrow-band green-emitting phosphor is prepared through chemical substitution. By introducing Ga 3+ ions into Sr 2 LiAlO 4 :Eu 2+ phosphor, the distribution of Eu 2+ ions in Sr1 and Sr2 sites is effectively controlled, and only one type of luminescent centers Eu 2+ (Sr1) is remained in Sr 2 LiAl 0.6 Ga 0.4 O 4 :Eu 2+ due to the compression effect of Sr2O 8 polyhedra. Sr 2 LiAl 0.6 Ga 0.4 O 4 :Eu 2+ phosphor presents an extremely narrow-band green emission centered at 512 nm with a full-width at half-maximum of only 40 nm. The wide color gamut (107% National Television System Committee) of the as-fabricated white liquid crystal displays and the vivid figures captured from the projector demonstrate the potential application of narrow-band emitter for wide-color gamut displays. This work provides the design principles of realizing narrow-band emission by selective site occupancy engineering and can set the stage for the exploring of Eu 2+ -activated phosphor for high definition displays.
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SENSORS AND ACTUATORS A-PHYSICAL
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2023
·
IF 4.6
Xinhua Liu,Chengkun Ma,Shaowei Lu,Rongzheng Xu,Keming Ma,Xingmin Liu,Lu Zhang
In this paper, the health monitoring of Al 7075 friction stir welded structure was carried out, including elastic and plastic deformation during stretching and bending. A thin film sensor composed of MXene and single-walled carbon nanotubes was developed by simple mixing and vacuum filtration. This flexible MXene/SWCNT thin film sensor combining the sensitivity of MXene with the stability of carbon nanotubes and can be pasted on the surface of Al 7075 FSW joints through polyimide encapsulation to achieve structural health monitoring . The experimental results show that the MXene/SWCNT sensors encapsulated in polyimide can effectively capture the micro strain of different areas during stretching and bending. When the strain of the welded structure is less than 3000, only elastic deformation occurs in different regions of the welded structure, and the sensors located in different regions show the same resistance change rate. When the strain is greater than 3000, the resistance change rate of the sensors in the thermal-mechanical affected zone and heat affected zone obviously, and when the external force is released, there is residual resistance , which proves that the plastic deformation occurs in the welded structure at this time. By comparing the resistance change rate of the sensors in different regions, it can be inferred whether plastic deformation occurs. As the strain further increases, the resistance change rate of the sensor further increases and make a stable response until the structure breaks. This sensor can be used to track the whole process monitoring of welded structure before fracture.
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Chemical Engineering and Processing-Process Intensification
·
2023
·
IF 4.3
Lixiang Zhu,Shuo Wang,Jiaxing Wang,Jiabao Zhu,Xiaodong Li,Meishuai Zou
The Al-water reaction has attracted many attentions as it's a convenient method for on-demand hydrogen generation. Although a variety of additives have been demonstrated to promote the activity of Al, the most likely mechanism is simply the inference made from surface conditions and reaction characteristics. In this study, the activation of two kinds of active Al-10Bi alloys powders was prepared by both melting alloy and mechanical alloy methods. The activity of the as obtained powders was analyzed through various methods including XRD, SEM. 3D characterization of active Al powders was conducted using synchrotron X-ray tomography to reveal the inner structure of ball milled active Al alloy powders. Results show that ball milling could effectively introduce a large number of cracks both on the surface and the inner of powders. The number of cracks increased further after adding salt during ball milling. The relation between the inner structure of the Al alloys and their hydrolysis reaction products was also discussed. The specific surface area, the number and distribution of cracks alloy phase are all important factors that influence the hydrolysis reaction of the active alloy powder.
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