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结构化学
结构化学

吴新涛

月刊

0254-5861

jghx@fjirsm.ac.cn

0591-83704886，83704896

350002

福建省福州市杨桥西路155号

结构化学/Journal Chinese Journal of Structural ChemistryCSCD北大核心CSTPCDSCI
查看更多>>本刊是中国科学院主管，中国化学会、中国科学院福建物质结构研究所主办的学术性期刊。2006年改为纯英文版“Chinese Journal of Structural Chiemistry”。主要报道晶体学，量子化学，药物、材料和催化剂等领域物质性能与结构关系的文章。报道的内容涉及有机化学、无机化学、合成化学、结构化学、材料科学、药物化学、晶体学、理论化学等学科中的微观物质结构与性能关系的研究成果或阶段性成果。与此同时本刊也报道用谱学等物理方法解析物质结构、阐述物质结构与性能关系的论文。《结构化学》是中国自然科学核心期刊，中国科技论文引文数据库来源及统计源期刊。
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    Special Issue for Zeolite Catalysis

    Anmin ZhengXiangju MengHao XuWei Chen...
    1页
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    Dynamic single-atom catalysts toward ultrastable dehydrogenation

    Landong Li
    2-3页
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    DNL-16:A new zeolitic layered silicate unraveled by three-dimensional electron diffraction

    Chao MaPeng GuoZhongmin Liu
    4-6页
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    Solid-state NMR study of the stability of MOR framework aluminum

    Xinzhi DingChong LiuJing NiuNan Chen...
    7-14页
    查看更多>>摘要：MOR zeolite has been effectively utilized for dimethyl ether(DME)carbonylation reaction due to its unique pore structure and acidity.During industrial production,the transformation of ammonium type MOR zeolite(NH4-MOR)into proton type MOR zeolite(H-MOR)causes inevitable dealumination.Therefore,understanding the influencing factors and dynamic evolution mechanism of zeolite dealumination is crucial.In this work,the sta-bility of framework aluminum was studied by X-ray diffraction(XRD),Fourier transform infrared(FT-IR)spec-troscopy,29Si,27Al,1H magic angle spinning nuclear magnetic resonance(MAS NMR),and DME carbonylation performance evaluation.These results indicate that extra-framework cation Na+and NH4+could better preserve the aluminum structure of the MOR zeolite framework compared to H+,primarily due to the different'attraction'of the framework to water.Furthermore,the impact of water on the zeolite framework aluminum at high tem-perature was studied by manipulating the humidity of the calcination atmosphere,revealing the formation of extra-framework six-coordinated aluminum(Al(Ⅵ)-EF)and the mechanism of water influence on the zeolite framework aluminum.
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    Pt confined in Sn-ECNU-46 zeolite for efficient alkane dehydrogenation

    Naihong WangLongkang ZhangYejun GuanPeng Wu...
    15-23页
    查看更多>>摘要：Highly dispersed and stable Pt-based catalysts play a crucial role in constructing efficient catalytic systems for alkane dehydrogenation.In this study,a novel bimetallic Pt-Sn catalyst confined in extra-large-pore ECNU-46 zeolite(denoted as Pt/Sn-ECNU-46)is prepared by post-treatment.The open-site framework Sn species((SiO)3Sn-OH)serve as anchors to interact with Pt species,favoring the high dispersion of Pt.On the other hand,the framework Sn species act as the second metal to regulate the geometrical and electronic environment of Pt species,thus suppressing their accumulation.Pt/Sn-ECNU-46 achieves a good performance in propane dehy-drogenation(PDH)reaction with high initial propane conversion(46％)and propylene selectivity(＞99％)as well as regeneration ability.In addition,Pt/Sn-ECNU-46 is also active in the dehydrogenation of n-hexane.This study explores the application of extra-large-pore zeolite as support in constructing metal-confined catalysts for alkane dehydrogenation.
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    Qualitative and quantitative analysis of Br?nsted and Lewis acid sites in zeolites:A combined probe-assisted 1H MAS NMR and NH3-TPD investigation

    Runze LiuYankai BianWeili Dai
    24-30页
    查看更多>>摘要：Zeolite is one of the most important heterogeneous catalysts in acid catalytic reactions.Considering that the catalytic behaviors of zeolites are mostly related to their acidic characteristics,extensive attention has been attracted to the measurements of acid type,strength and concentration in zeolites.Numerous techniques including Fourier-transform infrared(FTIR)spectroscopy,probe-assisted 1H,13C and 31P magic angle spinning nuclear magnetic resonance spectroscopy(MAS NMR)as well as temperature programmed desorption of ammonia(NH3-TPD)have been developed for determining the acid sites.Nevertheless,a single approach is defective to characterize the acid sites comprehensively.Herein,combining the probe-assisted(e.g.,NH3 and CD3CN)1H MAS NMR and NH3-TPD,the acid sites in different zeolites including the acid type,density and strength were determined.The commonly utilized NH3-TPD to determine the acid strength of zeolite samples with different topologies should be rigorously considered owing to zeolite confinement effect.Controlling the desorption temperature of NH3 probe molecules,the acid type(Le.,Brønsted acid sites(BAS)and Lewis acid sites(LAS))and the corresponding density could be determined by NH3 probe-assisted 1H MAS NMR spectroscopy,while the acid strength could be investigated via CD3CN probe-assisted 1H MAS NMR spectroscopy.
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    Efficacy of Ca/ZSM-5 zeolites derived from precipitated calcium carbonate in the methanol-to-olefin process

    Xinyu YouXin ZhangShican JiangYiru Ye...
    31-38页
    查看更多>>摘要：In the context of heightened environmental consciousness and the growing demand for light olefins,this study explores the promising future prospects for their sustainable production from renewable resources.Light olefins(especially propylene)are a pivotal constituent of the petrochemical industry,and their demand is poised for steady growth driven by various sectors(e.g.,electric mobility,consumer goods and packaging industries),which should not rely solely on traditional petroleum-led routes.Therefore,sustainable pathways,such as the methanol-to-olefin(MTO)process catalyzed by zeolites,are gaining attention.Intending to couple the future olefin demands with the concept of a"methanol economy",this study investigates the synthesis of hierarchical Ca/ZSM-5 zeolites using a cost-effective approach involving Precipitated Calcium Carbonate(PCC)as a hard template,leading to superior catalytic performance.Comprehensive characterization techniques are employed to elucidate the cata-lyst's properties,highlighting the dual importance of mesoporosity and calcium species in optimizing its per-formance.Operando spectroscopy provides in-depth insights into its enhanced anti-coking characteristics.This research contributes to expanding the catalyst toolkit for zeolite-catalyzed MTO processes,focusing on propylene production,thereby addressing the increasing demand for light olefins while promoting sustainability and circular economy principles.
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    Application of three-dimensional electron diffraction in structure determination of zeolites

    Yuhang LiYang LingYanhang Ma
    39-47页
    查看更多>>摘要：Zeolites have received great attention due to their wide applications in various fields such as catalysis,adsorp-tion/separation,ion exchange,etc.Determining the atomic crystal structure of zeolites is crucial to understanding their functions and exploring their applications.Due to the difficulty of synthesizing large single crystals,the structures of many zeolites cannot be solved using conventional single-crystal X-ray diffraction(SCXRD)methods.Three-dimensional electron diffraction(3D ED)has witnessed rapid development during the past decade and has shown its powerful ability in the structure determination of zeolites.In this review,we will briefly introduce the history of 3D ED and summarize recent advances in the application of 3D ED for the analysis of zeolite structures,along with several typical examples in this research field.
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    Templates for the synthesis of zeolites

    Huimin LuanQinming WuJianping WuXiangju Meng...
    48-58页
    查看更多>>摘要：Though zeolites have been successfully synthesized for several decades,the roles of templates for zeolite synthesis are still not fully understood yet.Currently,many types of templates have been employed such as inorganic alkali metal ions,organic quaternary ammonium cations,organic amines,organic quaternary phosphonium cations,metal complexes and zeolite seeds,and the roles are mainly summarized into three aspects:structure-directing,space-filling and charge-balancing.In order to synthesize zeolites efficiently,the proposed principles to guide zeolite synthesis are the stabilization of energy between templates and zeolite framework,charge density mis-matching(CDM)and structure matching between zeolite frameworks and templates.The purpose of this review is to briefly summarize the progresses in recent years,clearly showing the roles of the templates for zeolite synthesis.
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