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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

A new horizon for neuroscience:terahertz biotechnology in brain research

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Neural Regeneration Research 2025年第2期20卷 309-325页

作者： Zhengping Pu Yu Wu Zhongjie Zhu Hongwei zhao Donghong Cui Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry Kangci Hospital of JiaxingTongxiangZhejiang ProvinceChina Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of ScienceShanghaiChina National Facility for Protein Science in Shanghai Shanghai Advanced Research InstituteChinese Academy of SciencesShanghaiChina

Terahertz biotechnology has been increasingly applied in various biomedical fields and has especially shown great potential for application in brain *** this article,we review the development of terahertz biotechnology and its applications in the field of *** evidence indicates promising prospects for the use of terahertz spectroscopy and terahertz imaging techniques in the diagnosis of amyloid disease,cerebrovascular disease,glioma,psychiatric disease,traumatic brain injury,and myelin *** vitro and animal experiments have also demonstrated the potential therapeutic value of terahertz technology in some neuropsychiatric *** the precise underlying mechanism of the interactions between terahertz electromagnetic waves and the biosystem is not yet fully understood,the research progress in this field shows great potential for biomedical noninvasive diagnostic and therapeutic ***,the biosafety of terahertz radiation requires further exploration regarding its two-sided efficacy in practical *** review demonstrates that terahertz biotechnology has the potential to be a promising method in the field of neuropsychiatry based on its unique advantages.

关键词： biological effect brain neuron neuropsychiatry neuroscience non-thermal effect terahertz imaging terahertz radiation terahertz spectroscopy terahertz technology

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali Liu Shanshan Qi Biao Shi Ying zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

Cooking grease particles purification review and technology combination strategy evaluation for commercial kitchens

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Building Simulation 2021年第6期14卷 1597-1617页

作者： Dongfang zhao xue-yi You Tianjin Key Lab of Indoor Air Environmental Quality Control School of Environmental Science and EngineeringTianjin UniversityJinnan DistrictTianjin 300350China

Effective emission control of cooking oil fumes(COFs),particularly for grease particles,has always been a cause of great concern for catering *** review and evaluation of combinations of purification technology are urgently *** work presents a literature review and combination strategy evaluation of purification technology of grease particles of commercial kitchens.A variety of mainstream purification technologies,such as mechanical separation(M),filtration(F),washing absorption(W)and electrostatic deposition(E)are *** order to establish a complete and efficient fume purification system for commercial kitchen,this study proposes the four-point principles of combined purification technologies as:(1)from easy to difficult(for grease particle diameter);(2)fire prevention and noise reduction;(3)electrostatic deposition postposition;(4)Absorption and dissolution(by-product from electrostatic).Based on the above principles and separation characteristics,the recommended combinations of purification strategies are M-E,F-E,M-F-E and *** combination strategy of M-F-E is adopted as an example to evaluate and optimize COFs purification system use life cycle assessment *** results indicate that the optimization of the M-F-E purification system using rotating mesh plate instead of baffle filter can reduce the environmental impact of global warming and eutrophication by about 35%which reduces the emissions of CO_(2)and SO_(2)from 92.533 kg and 0.110 kg to 60.214 kg and 0.072 kg,*** the review of relevant purification technologies,the study also proposes the combination of principles of purification technologies and the evaluation and optimization of life cycle assessment for the optimal design of combined purification system.

关键词： combination strategy commercial kitchen cooking grease particles environmental impact assessment purification technology

Simultaneous Analysis of Thirteen Bioactive Components in Evodia rutaecarpa and Its Varieties by HPLC-DAD-MS

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Chinese Herbal Medicines 2010年第2期2卷 112-117,131页

作者： XU Hai-yu1,3,ZHANG Tie-jun2,XIAO xue-feng1,zhao Ping1,LIU Chang-xiao3,XU Jun2 1.Tianjin University of Traditional Chinese Medicine,Tianjin 300193,China 2.Tianjin Engineering Laboratory of Quality Control Techniques for TCM,Tianjin Institute of Pharmaceutical Research,Tianjin 300193,China 3.The National Laboratory of Pharmacodynamics and Pharmacokinetics,Tianjin Institute of Pharmaceutical Research,Tianjin 300193,China XU Hai-yu(Tianjin University of Traditional Chinese Medicine Tianjin 300193China The National Laboratory of Pharmacodynamics and Pharmacokinetics Tianjin Institute of Pharmaceutical ResearchTianjin 300193China) ZHANG Tie-jun XU Jun(Tianjin Engineering Laboratory of Quality Control Techniques for TCMTianjin Institute of Pharmaceutical ResearchTianjin 300193China) XIAO xue-feng ZHAO Ping(Tianjin University of Traditional Chinese MedicineTianjin 300193China) LIU Chang-xiao(The National Laboratory of Pharmacodynamics and Pharmacokinetics Tianjin Institute of Pharmaceutical ResearchTianjin 300193China)

Objective To control the quality of Evodia rutaecarpa *** An HPLC-DAD-MS/MS method was established for the rapid and efficient identification of bioactive constituents and for simultaneous quantitative analysis of four bioactive ingredients including evodiamine,rutaecarpine,dehydroevodiamine,and evodin in ***,which was applied to evaluating eight samples of *** and its varieties from different *** Thirteen potentially bioactive constituents including one flavonoid glycoside,one limonin,four indoloquinazoline alkaloids,and seven quinolone alkaloids were identified in all samples and the contents of dehydroevodiamine,evodine,evodiamine,and rutaecarpine varied widely from 0.10% to 0.51%,0.49% to 3.12%,0.07% to 1.56%,and 0.10% to 0.69%,*** This method is found to be convenient,fast,accurate,and it is facilitated to improve the quality control standard of *** and related products.

关键词： dehydroevodiamine Evodia rutaecarpa evodiamine evodin HPLC-DAD-MS rutaecarpine

Protective Role of Ca Against NaCl Toxicity in Jerusalem Artichoke by Up-Regulation of Antioxidant Enzymes

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Pedosphere 2008年第6期18卷 766-774页

作者： xue Yan-feng LIU Ling LIU zhao-Pu S. K. MEHTA zhao Geng-Mao Department of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 （China）. State Key Laboratory Breeding Base Key Laboratory of Food Quality and Safety of Jiangsu Province Nanjing 210014 （China） Department of Life Sciences Nanjing Agricultural University Nanjing 210095 （China）

The ameliorative effect of external Ca^2＋ on Jerusalem artichoke （Helianthus tuberosus L.） under salt stress was studied through biochemical and physiological analyses of Jerusalem artichoke seedlings treated with or without 10 mol L^-1 CaCl2, 150 mmol L^-1 NaCl, and/or 5 mmol L^-1 ethylene-bis（oxyethylenenitrilo）-tetraacetic acid （EGTA） for five days. Exposure to NaC1 （150 mmol L^-1） decreased growth, leaf chlorophyll content, and photosynthetic rate of Jerusalem artichoke seedlings. NaC1 treatment showed 59% and 37% higher lipid peroxidation and electrolyte leakage, respectively, than the control. The activities of superoxide dismutase （SOD）, peroxidase （POD）, and catalase （CAT） were decreased by NaCl, indicating an impeded antioxidant defense mechanism of Jerusalem artichoke grown under salt stress. Addition of 10 mmol L^-1 CaCl2 to the salt solutions significantly decreased the damaging effect of NaC1 on growth and chlorophyll content and simultaneously restored the rate of photosynthesis almost to the level of the control. Ca^2＋ addition decreased the leaf malondialdehyde （MDA） content and electrolyte leakage from NaCl-treated seedlings by 47% and 24%, respectively, and significantly improved the activities of SOD, POD, and CAT in NaCl-treated plants. Addition of EGTA, a specific chelator of Ca2＋, decreased the growth, chlorophyll content, and photosynthesis, and increased level of MDA and electrolyte leakage from NaCl-treated plants and from the control plants. EGTA addition to the growth medium also repressed the activities of SOD, POD, and CAT in NaCl-treated and control seedlings. External Ca2＋ might protect Jerusalem artichoke against NaC1 stress by up-regulating the activities of antioxidant enzymes and thereby decreasing the oxidative stress.

关键词： antioxidant enzymes calcium Jerusalem artichoke lipid peroxidation salt stress

Critical behavior of Gd5Si2Ge1.9Ga0.1 near the ferromagnetic-paramagnetic phase transition

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Critical behavior of Gd5Si2Ge1.9Ga0.1 near the ferromagnetic...

第八届中国功能材料及其应用学术会议

作者： zhao Zeng-ru WANG Gao-feng ZHANG xue-feng Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources Inner Mongolia University of Science and Technology School of Mathematics Physics and Biological EngineeringInner Mongolia University of Science and Technology

ISBN: (纸本)9783037859698

The critical behavior near the ferromagnetic-paramagnetic phase transition in GdSiGeGahas been investigated using a method based on the field dependence of isothermal entropy *** reliability of the critical exponents determined in such a way has been examined through various techniques,like constructing the modified Arrott plot,applying the scaling law on the isothermal magnetization curves,and comparing the values with those obtained from the Kouvel-Fisher *** resulting values of the exponents were estimated to be β= 0.45(2),γ=1.31(5),8= 3.9(2) and n= 0.69(1),close to the values predicted by the mean field ***,we concluded that the exchange interaction is of long-range type.

关键词： Gd5Si2Ge1.9Ga0.1 Critical exponent Phase transition Isothermal entropy change

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宿迁市晓店陶瓷矿床特点及评价

江苏地质 2002年第2期26卷 70-73页

作者：孙雪峰赵立鸿宿迁市国土资源局江苏宿迁223800 江苏省地质调查研究院江苏南京210018

晓店陶瓷矿床位于郯庐断裂带内 ,并分为瓷石、陶土和陶瓷土三大类型 ,其中瓷石矿产于下白垩统青山组火山岩中 ,陶土矿产于上白垩统王氏组中 ,瓷土矿产于上新统宿迁组中。测试结果表明 ,该陶瓷矿是较理想的建筑陶瓷原料。

关键词：白垩系上新统陶瓷原料矿床火山岩沉积物江苏瓷石陶土陶瓷土

Production of low-silicon molten iron from high-silica hematite using biochar

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Journal of Iron and Steel Research International 2017年第1期24卷 27-33页

作者： Hui-qing Tang Xiu-feng Fu Yan-qi Qin Shi-yu zhao Qing-guo xue State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

A new method of utilizing high-silica hematite to produce low-silicon molten iron was *** this method,FASTMELT,which comprised direct reduction and melt separation processes,was applied,with highly reactive biochar as the reductant in the direct reduction *** proposed method was experimentally investigated and the results show that the method is *** the direct reduction stage,ore-char briquette could achieve a metallization rate of 84%-88% and residual carbon of 0.27-0.89mass% at temperature of 1373 K,biochar mixing ratio of 0.8-0.9,and reduction time of 15 *** silica particles remained embedded in the iron phase after the *** the melting separation stage,molten iron with a carbon content of 0.02-0.03mass% and silicon content of 0.02-0.18mass%could be obtained from the metallic briquettes under the above-mentioned conditions;the iron recovery rate was83%-91% and impurities in the obtained metal were negligible.

关键词： High-silica hematite Low-silicon molten iron Biochar Direct reduction Melt separation