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Low-cost and fluoride-free synthesis of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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Journal of Energy Chemistry 2025年第1期100卷 458-468页

作者： Peng Zhu Cun liu Yiren Yu Guoshu Gao Yumeng Zhao Xiongfu Zhang Guodong liu Guohui Yang State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Zeolite nanosheets with a short b-axis thickness are highly desirable in lots of catalytic reactions due to their reduced diffusion resistance. Nevertheless, conventional synthesis methods usually require expensive structure-directing agents(SDAs), pricey raw materials, and eco-unfriendly fluorine-containing additives. Here, we contributed a cost-effective and fluoride-free synthesis method for synthesizing high-quality MFI zeolite nanosheets through a Silicalite-1(Sil-1) seed suspension and urea cooperative strategy, only with inexpensive colloidal silica as the Si source. Our approach was effective for synthesizing both Sil-1 and aluminum-containing ZSM-5 nanosheets. By optimizing key synthesis parameters,including seed aging time, seed quantity, and urea concentration, we achieved precise control over the crystal face aspect ratio and b-axis thickness. We also revealed a non-classical oriented nanosheet growth mechanism, where Sil-1 seeds induced the formation of quasi-ordered precursor particles, and the(010)crystal planes of these particles facilitated urea adsorption, thereby promoting c-axis-oriented *** obtained ZSM-5 nanosheets exhibited exceptional catalytic performance in the benzene alkylation with ethanol, maintaining stability for over 500 h, which is 5 times longer than traditional ZSM-5 catalysts. Furthermore, large-scale production of ZSM-5 nanosheets was successfully carried out in a 3 L highpressure autoclave, yielding samples consistent with those from laboratory-scale synthesis. This work marks a significant step forward in the sustainable and efficient production of MFI nanosheets using inexpensive and environmentally friendly raw materials, offering the broad applicability in catalysis.

关键词： MFI zeolite ZSM-5 Nanosheets Scale-up synthesis Aromatic alkylation

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Synthesis of faveolate open-structured Ru-N/C cathode catalyst with high bifunctional activity for rechargeable quasi-solid-state Li-O_(2)batteries

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Nano Research 2025年第1期18卷 351-361页

作者： Tie liu School of Chemistry and Chemical Engineering Heze UniversityHeze 274015China

The constituents and geometric design of cathodic electrocatalyst to achieve high activity and durability are effective but challenging for the development of high-performance Li-O_(2)*** study employs a mild solution precipitation method followed by thermolysis to construct a faveolate open-structured Ru-N/C matrix with a loosely braided network morphology as a bifunctional *** details prove that this hybrid structure is composed of ultrafine Ru globular nanoparticles(ca.2 nm)coated with an N-enriched carbon film and exhibits a valuable beehive through-hole character for rapid mass transport during oxygen redox *** synergistic effect of open-structured and reticular network matrix with metal-N4 coordination induces asymmetric charge distributions with moderate adsorption/desorption behaviour with oxygen ***,this particular Ru-N/C matrix cathode provides a promising Li_(2)O_(2)accommodation space and exhibits superior electrochemical performance in terms of a positive discharge plateau and low charge ***,the assembled batteries also present a high discharge capacity and a long cycle life(exceeding 283 cycles).The density functional theory(DFT)calculations also corroborate the assertion that the Ru-N/C catalyst exhibits robust electronic coupling transfer and superior bifunctional *** such,our work demonstrates that this type of open-structured Ru-N/C matrix is promising for fabricating high-performance quasi solid-state Li-O_(2)batteries.

关键词： ruthenium nitride nitrogen-doped carbon electrocatalyst Li-O_(2)battery

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An Innovation of Evaluation and Design of Vehicle Acceleration Sound Based on EEG Signals

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Journal of Bionic Engineering 2024年第1期21卷 344-361页

作者： Liping Xie xinyou Lin Wan Chen Zhien liu Yawei Zhu College of Mechanical Engineering&Automation Fuzhou UniversityFuzhou 350108China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China

There is a bottleneck in the design of vehicle sound that the subjective perception of sound quality that combines multiple psychological factors fails to be accurately and objectively ***,EEG signals are introduced in this paper to investigate the evaluation and design method of vehicle acceleration sound with powerful sound ***,the experiment of EEG acquisition and subjective evaluation under the stimulation of powerful vehicle sounds is conducted,respectively,then three physiological EEG features of PSD_β,PSD_γand DE are constructed to evaluate the vehicle sounds based on the correlation analysis ***,the Adaptive Genetic Algorithm(AGA)is proposed to optimize the Elman model,where an intelligent model(AGA–Elman)is constructed to objectively predicate the perception of subjects for the vehicle sounds with powerful sound *** results demonstrate that the error of the constructed AGA–Elman model is only 2.88%,which outperforms than the traditional BP and Elman model;Finally,two vehicle acceleration sounds(Design1 and Design2)are designed based on the constructed AGA–Elman model from the perspective of order modulation and frequency modulation,which provide the acoustic theoretical guidance for the design of vehicle sound incorporating the EEG signals.

关键词： EEG signal Brain activity analysis Vehicle sound design Adaptive genetic algorithm-Elman model

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白萝卜提取物对实验动物胃肠动力的促进作用及其可能的机制

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胃肠病学和肝病学杂志 2007年第5期16卷 471-473,476页

作者：刘琳娜张琰王景杰刘新友程建峰第四军医大学唐都医院药剂科陕西西安710038 第四军医大学唐都医院消化科陕西西安710038

目的探讨白萝卜提取物（Raphanus sativus roots extract,Rex）对实验动物胃肠运动的影响并探讨其可能的作用机制。方法灌胃给药（剂量10、30、100 mg/kg）后,测定小鼠胃内容物的残留率、小肠中阿拉伯胶活性炭粉混合物的推进距离;制作... 详细信息

目的探讨白萝卜提取物（Raphanus sativus roots extract,Rex）对实验动物胃肠运动的影响并探讨其可能的作用机制。方法灌胃给药（剂量10、30、100 mg/kg）后,测定小鼠胃内容物的残留率、小肠中阿拉伯胶活性炭粉混合物的推进距离;制作豚鼠回肠离体肠段标本,测定给药前后肠段平滑肌收缩强度和频率的变化情况;多导生理记录仪检测大鼠胃及十二指肠电活动;放射免疫法测定大鼠血浆胃动素含量变化。结果与阴性对照组相比,白萝卜提物在10-100 mg/kg时可使胃残留率明显减少,小肠推进百分比明显增加;并剂量依赖性地使离体豚鼠回肠平滑肌收缩;大鼠胃及十二指肠电活动的慢波频率和振幅明显增加,血浆胃动素水平明显升高（P〈0.05或P〈0.01）。结论白萝卜提取物可明显促进实验动物胃肠运动,该作用的发挥可能与胃动素水平升高及促进胃十二指肠电活动有关。

关键词：白萝卜胃肠动力胃动素

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降压抗栓胶囊的质量标准研究

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西北药学杂志 2019年第2期34卷 174-177页

作者：赵美姜维宋彦峰刘新友刘琳娜张琰空军军医大学第二附属医院药剂科西安710038

目的建立降压抗栓胶囊的质量标准。方法采用TLC法对处方中丹参、川芎、甘草和酸枣仁进行定性鉴别;采用HPLC法测定丹参酮ⅡA的含量。色谱柱:Inertsil ODS-3色谱柱(250 mm×4.6 mm,5μm);流动相:甲醇-水(75∶25);检测波长:270 nm;流速:1.0... 详细信息

目的建立降压抗栓胶囊的质量标准。方法采用TLC法对处方中丹参、川芎、甘草和酸枣仁进行定性鉴别;采用HPLC法测定丹参酮ⅡA的含量。色谱柱:Inertsil ODS-3色谱柱(250 mm×4.6 mm,5μm);流动相:甲醇-水(75∶25);检测波长:270 nm;流速:1.0 mL·min^(—1);柱温:25℃;进样量:5μL。结果 TLC图斑点清晰,分离度好,阴性无干扰;HPLC法中,丹参酮ⅡA的线性范围为10.375～166.000μg·mL^(—1)(r=0.999 9),平均回收率为100.6%,RSD值为0.9%(n=9)。结论该方法操作简便、专属性高,可作为降压抗栓胶囊质量控制的常用方法。

关键词：降压抗栓胶囊丹参酮ⅡA 质量标准

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Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H2O2 synthesis coupled with biomass valorization

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Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye Li Shuang Pan Yihuang Chen Qiong liu College of Chemistry and Materials Engineering Wenzhou University Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology (China) Institute of Analysis Guangdong Academy of Sciences (China National Analytical CenterGuangzhou)

Photocatalytic oxygen reduction for hydrogen peroxide （H2O2） synthesis presents a green and costeffective production ***,achieving highly selective H2O2synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H2O2and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride（CNRb）.The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h-1for H2O2generation and photooxidation rate of 3.75 mM h-1for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion （SCC） efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H2O2coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Rubidium atom coordination Biomass valorization

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Preparation and applications of calcium ferrite as a functional material:A review

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 292-310页

作者： Xiuli Han Bowen Duan Lei liu Shilong Fang Weiwei Wang College of Mining Engineering North China University of Science and TechnologyTangshan 063210China Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources of Hebei Province Tangshan 063210China Key Laboratory of Mining Development and Security Technology of Hebei Province Tangshan 063210China

Calcium ferrite(CF)is recognized as a potential green and efficient functional material because of its advantages of magnetism,electrochemistry,catalysis,and biocompatibility in the fields of materials chemistry,environmental engineering,and ***-fore,the obtained research results need to be systematically summarized,and new perspectives on CF and its composite materials need to be *** on the presented studies of CF and its composite materials,the types and structures of the crystal are *** addition,the current application technologies and theoretical mechanisms with various properties in different fields are ***,the various preparation methods of CF and its composite materials are elaborated in *** importantly,the advantages and disadvantages of the synthesis methods of CF and its composite materials are discussed,and the existing problems and emerging challenges in practical production are ***,the key future research directions of CF and its composite materials have been prospected from the potential application technologies to provide references for its synthesis and efficient utilization.

关键词： calcium ferrite mineral functional materials preparation application perspectives

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Multi-layer multi-pass friction rolling additive manufacturing of Al alloy:Toward complex large-scale high-performance components

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 425-438页

作者： Haibin liu Run Hou Chenghao Wu Ruishan Xie Shujun Chen College of Mechanical&Energy Engineering Beijing University of TechnologyBeijing 100124China Chongqing Research Institute of Beijing University of Technology Chongqing 401121China

At present,the emerging solid-phase friction-based additive manufacturing technology,including friction rolling additive man-ufacturing(FRAM),can only manufacture simple single-pass *** this study,multi-layer multi-pass FRAM-deposited alumin-um alloy samples were successfully prepared using a non-shoulder tool *** material flow behavior and microstructure of the over-lapped zone between adjacent layers and passes during multi-layer multi-pass FRAM deposition were studied using the hybrid 6061 and 5052 aluminum *** results showed that a mechanical interlocking structure was formed between the adjacent layers and the adja-cent passes in the overlapped center *** friction and rolling of the tool head led to different degrees of lateral flow and plastic deformation of the materials in the overlapped zone,which made the recrystallization degree in the left and right edge zones of the over-lapped zone the highest,followed by the overlapped center zone and the non-overlapped *** tensile strength of the overlapped zone exceeded 90%of that of the single-pass deposition *** is proved that although there are uneven grooves on the surface of the over-lapping area during multi-layer and multi-pass deposition,they can be filled by the flow of materials during the deposition of the next lay-er,thus ensuring the dense microstructure and excellent mechanical properties of the overlapping *** multi-layer multi-pass FRAM deposition overcomes the limitation of deposition width and lays the foundation for the future deposition of large-scale high-performance components.

关键词： aluminum alloy additive manufacturing solid-state friction stir welding multi-layer multi-pass

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香附不同炮制品HPLC指纹图谱研究

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中国医药导报 2011年第31期8卷 29-32页

作者：徐媛张文娟王庆伟刘新友程敏第四军医大学唐都医院药剂科陕西西安710038 陕西商洛学院生物医药工程系陕西商洛726000

目的:对生香附、醋制香附、酒制香附、香附炭的指纹图谱进行研究比较。方法:采用梯度洗脱法测定香附不同炮制品的HPLC指纹图谱,流动相为甲醇-水,梯度洗脱,检测波长为254 nm,记录时间为60 min。结果:香附经不同方法炮制后,不仅原有成分... 详细信息

目的:对生香附、醋制香附、酒制香附、香附炭的指纹图谱进行研究比较。方法:采用梯度洗脱法测定香附不同炮制品的HPLC指纹图谱,流动相为甲醇-水,梯度洗脱,检测波长为254 nm,记录时间为60 min。结果:香附经不同方法炮制后,不仅原有成分含量发生变化,而且有新成分生成。结论:香附不同炮制品成分差异显著。

关键词：香附炮制指纹图谱

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HPLC法同时测定人血浆中甘草酸和苦参碱的质量浓度

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西北药学杂志 2014年第2期29卷 138-140页

作者：韦华梅石磊党学良刘新友张琰第四军医大学唐都医院药剂科西安710038

目的：建立以HPLC法同时测定人血浆中甘草酸和苦参碱质量浓度的方法。方法Ultimate AQ-C18柱（250mm＆#215;4.6mm，5μm），柱温为室温（25℃），流动相为乙腈-三乙胺调pH至7．5的0．05mol＆#183;L-1磷酸二氢钾（22．5∶77．5），流速为... 详细信息

目的：建立以HPLC法同时测定人血浆中甘草酸和苦参碱质量浓度的方法。方法Ultimate AQ-C18柱（250mm＆#215;4.6mm，5μm），柱温为室温（25℃），流动相为乙腈-三乙胺调pH至7．5的0．05mol＆#183;L-1磷酸二氢钾（22．5∶77．5），流速为1．0mL＆#183;min-1，检测波长为220nm（检测苦参碱）和250nm（检测甘草酸），进样量50μL。结果甘草酸单铵盐质量浓度在2．0～200.0μg＆#183;mL-1范围内线性良好，苦参碱质量浓度在2．0～200．0μg＆#183;mL-1范围内线性良好。平均回收率均大于95％，日内、日间RSD均小于4％。结论该方法简便、快速、灵敏、可靠，可用于人血浆中甘草酸和苦参碱质量浓度的监测。

关键词：甘草酸苦参碱血药质量浓度

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