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Cascade adsorptive separation of light hydrocarbons by commercial zeolites

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Journal of Energy chemistry 2022年第9期31卷 299-305,I0009页

作者： Shanshan Liu Yinlin chen Bin Yue Yuanxin Nie Yuchao chai guangjun Wu Jiangnan Li Xue Han Sarah JDay Stephen PThompson Naijia guan Sihai Yang Landong Li School of Materials Science and Engineering Nankai UniversityTianjin 300350China Department of chemistry The University of ManchesterManchester M139PLUnited Kingdom Diamond Light Source Harwell Science CampusOxfordshire OX110DEUnited Kingdom Haihe Laboratory of Sustainable chemical Transformations Tianjin 300192China

Adsorptive separation of light hydrocarbons by porous solids provides an energy-efficient alternative to state-of-the-art cryogenic ***,an optimal balance between the cost,performance and stability of the sorbent material is yet to be achieved for industrial ***,we report the efficient separation of C2 and C3 hydrocarbons by a faujasite zeolite(Na-X,Si/Al=1.23).A tandem configuration of two fixed-beds packed with Na-X affords complete dynamic separation of the ternary mixture of C_(2)H_(2)/C_(2)H_(4)/C_(2)H_(6)(1/49.5/49.5;v/v/v)under ambient ***-swing desorption on the latter fixed-bed gives ethylene(>99.50%,1.80 mmol g^(-1))and ethane(>99.99%,1.41 mmol g^(-1)).In situ synchrotron X-ray powder diffraction revealed the binding sites for C_(2)H_(2)and C_(2)H_(4)in *** study highlights the potential application of commercial zeolites for challenging industrial separations.

关键词： Zeolites C2 hydrocarbons Ethylene Adsorptive separation

Synthesis, crystal structure and biological activity of two Mn complexes with 4-acyl pyrazolone derivatives

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Synthesis, crystal structure and biological activity of two ...

双阳离子型离子液体和十八烷基修饰的混合模式硅胶固定相的制备及色谱性能

中国化学会第九届全国无机化学学术会议

作者： Yue Li guan-cheng Xu Institute of Applied chemistry Xinjiang University

A great many Schiff base complexes with transition metals have been confirmed possessing biological and pharmaceutical activities, such as anticancer, antitumor and antioxidative activities as well as the inhibition of lipid peroxidation, etc. In this paper, two Mn complexes [Mn（HLa）（La）]·（ch3CN）1.5·H2O（1） and [Mn2（Lb）2（μ-Et O）2（Et OH）2]（2）（H2La=N-（1-phenyl-3- methyl-4-benzoyl-5-pyrazolone）-2-thiophenecarboxylic acid hydrazide, H2Lb=N-（1-phenyl-3-methyl-4-propenylidene-5-pyrazolone）-2-thiophenecarboxylic acid hydrazide） have been synthesized and characterized. Single crystal X-ray diffraction analysis indicated that 1 is a mononuclear complex and 2 exhibits a dinuclear centrosymmetric structure. Binding of the complexes with Herring Sperm DNA（HS-DNA） and were showed that complexes 1 and 2 could intercalate to DNA and quench the intrinsic fluorescence of BSA in a static quenching process. Further, the inhibitory effects of the complexes on the cell population growth of the human esophageal cancer Eca-109 cells and the cervical cancer He La cells were determined by MTT assay, which indicated that both 1 and 2 significantly inhibited the growth of Eca-109 and He La cells, the inhibitory activity of complex 1 is stronger than that of 2. We further observed that complex 1 inhibited the growth of He La cells through inducing the apoptosis and arresting cell cycle at S phase.

关键词： Manganese complex 4-acyl pyrazolone derivatives Crystal structure DNA-and Protein-binding Antitumor activity

来源： cnki会议评论

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高等学校化学学报 2022年第6期43卷 112-120页

作者：季双琦靳钊观文娜潘翔宇关彤青岛科技大学高分子科学与工程学院青岛266045 中国科学院青岛生物能源与过程研究所青岛266101

通过分步键合反应制备了一种咪唑基双阳离子型离子液体和十八烷基共同修饰的混合模式硅胶色谱固定相(Sil-C18-IL-C4);采用元素分析和红外光谱对其进行了表征.分别评价了该固定相在反相色谱模式(RPLC)、亲水色谱模式(HILIC)和RPLC/HILIC... 详细信息

通过分步键合反应制备了一种咪唑基双阳离子型离子液体和十八烷基共同修饰的混合模式硅胶色谱固定相(Sil-C18-IL-C4);采用元素分析和红外光谱对其进行了表征.分别评价了该固定相在反相色谱模式(RPLC)、亲水色谱模式(HILIC)和RPLC/HILIC混合色谱模式下的色谱分离性能,并在HILIC模式下对6种碱基核苷类化合物进行分离,考察了流动相中有机相体积分数和水相中甲酸铵浓度对分离效果的影响.此外,还考察了该固定相的分离重复性.制备的Sil-C18-IL-C4固定相的元素分析结果表明,氮元素含量为1.65%,碳元素含量为11.16%,氢元素含量为2.44%.该固定相的红外光谱中,2928和2856 cm^(‒1)处出现了—ch的不对称和对称伸缩振动峰,1440和660 cm^(‒1)处出现了咪唑环上C=C的伸缩振动峰和C=N的弯曲振动峰,说明十八烷基和1,5-双(咪唑-1-基)戊烷均已接枝到硅胶表面.色谱性能评价结果表明,Sil-C18-IL-C4固定相可表现出反相色谱模式和亲水色谱模式分离性能,对6种碱基核苷类物质能够实现完全分离,而且在一定的色谱条件下可以在单根色谱柱单次运行中实现RPLC/HILIC混合模式色谱分离,对于处理复杂样品中的碱基核苷类化合物等亲水物质具有良好的应用潜能.

关键词：咪唑基双阳离子型离子液体混合模式色谱固定相碱基核苷

Crystal Structure of Quaternary Mixed Anion Complex of Labthanide [Ce(ch_3COO)_2(NO)_3(phen)]_2

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chinese Journal of Structural chemistry 1998年第4期17卷 281-283页

作者： ZHU Long-guan YU Qing-Sen XIE Xue-Peng PAN Xue-Ying(Department of chemistry, Zhejiang University, Hangzhou, 310027) Department of chemistry Zhejiang University Hangzhou 310027 China

[Ce(ch3COO)2(NO3) (phen)]2, Mr=1000. 84. The crystal is monoclinic, lattice type C-centered, space group C2/m, with a=15. 444 (6), b= 12. 273(5), c=12. 776(5) A, β= 131. 89(2)°, Z= 2, Dc= 1, 844 g/cm3, μ(MoKa)=25. 69 cm-1, F(000)=980. 00, V= 1802 (1 ) A, R=0.024, Rw=0. 032. Themolecule of the complex is a dimer with C2h symmetry and the molecular center lies onthe special position 2/m. The Ce(Ⅲ) ion is nine-coordianted to one bidentate nitrategroup, five oxygen atoms of acetates and two nitrogen atoms of 1, 10-phenanthroine(phen).

关键词： cerium complex mixed anion quaternary crystal structure

新息增量法评估FY-3E/HIRAS-Ⅱ观测质量

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红外与毫米波学报 2023年第6期42卷 834-844页

作者：陈宏涛官莉南京信息工程大学气象灾害预报预警与评估协同创新中心江苏南京210044

FY-3E/HIRAS-Ⅱ作为世界上第一个晨昏轨道的星载红外高光谱仪器,评估其观测资料质量对提高资料同化分析场和全球数值天气预报精度具有十分重要的作用。本文基于2021年12月-2022年1月及2022年3月共35天的HIRAS-Ⅱ观测,采用新息增量法检... 详细信息

FY-3E/HIRAS-Ⅱ作为世界上第一个晨昏轨道的星载红外高光谱仪器,评估其观测资料质量对提高资料同化分析场和全球数值天气预报精度具有十分重要的作用。本文基于2021年12月-2022年1月及2022年3月共35天的HIRAS-Ⅱ观测,采用新息增量法检验了其在轨辐射观测资料质量,按陆地和洋面分别统计了O-B偏差和标准差的分布特征;进一步匹配相同时间段、相同区域的MetOp-B/IASI观测资料,使用双重差异的O-B法分析了HIRAS-Ⅱ观测资料质量,可消除偏差中辐射传输模式模拟的影响。结果表明,不论海洋还是陆地,HIRAS-Ⅱ长波与中波大部分通道的O-B平均偏差均小于0.5 K、标准差在1 K以内,陆地上标准差比洋面偏大(尤其是窗区通道)。664~665 cm^(-1)CO_(2)吸收带和1300~1680 cm^(-1)水汽吸收带,由于再分析资料的偏差引起RTTOV模拟的辐射值存在系统性误差,使得偏差较大;980~1080 cm^(-1)O_(3)吸收带和1300 cm^(-1)ch_(4)吸收带附近较大的偏差是由于辐射传输模式RTTOV中吸收气体浓度采用固定的气候廓线值造成的,这些波段与MetOp-B/IASI相比的double O-B偏差均趋近于0 K,说明O-B偏差主要是由于辐射传输模式模拟误差造成的,而不是仪器观测的质量低。短波大部分通道的O-B平均偏差在-2 K~2 K之间,标准差在2 K以内。1920 cm^(-1)附近通道由于是仪器中波与短波的交界处,采用的探测器不同造成较大的O-B偏差。2267~2380 cm^(-1)较大的偏差是由于RTTOV模拟亮温时没有考虑非局地热力平衡NLTE效应的影响。波数大于2400 cm^(-1)的短波波段由于太阳污染使得偏差和标准差都逐渐增大。HIRAS-ⅡO-B偏差随扫描角存在不对称现象,使用时需要进行扫描角偏差订正。

关键词： FY-3E/HIRAS-Ⅱ RTTOV 新息增量法观测质量评估

Fast Liquid Phase Epitaxial Growth for Perovskite Single Crystals

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chinese Physics Letters 2020年第1期37卷 97-100页

作者： Yu-Wei Li Xin Wang guan-Wen Li Yao Wu Yu-Zhu Pan Yu-Bing Xu Jing chen Wei Lei Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and EngineeringSoutheast UniversityNanjing 210096

Semiconductors grown by the solution-processed method have shown low-cost,facile fabrication process and comparable ***,there are many reasons why it is difficult to achieve high quality *** example,lattice constant mismatch is one of the problems when photovoltaic devices made of organ metallic *** this work,MAPbBr^(MA=ch3NH3^+)perovskites single crystals grown on the surface of MAPbBr2.5 CI0.5 perovskites single crystals via liquid epitaxial growth method is *** is found that when the lattice constants of the two perovskite single crystals are matched,another crystal can be grown on the surface of one crystal by epitaxial *** whole epitaxy growth process does not require high heating temperature and long heating time.X-ray diffraction method is used to prove the lattice plane of the substrate and the epitaxial grown layer.A scanning electron microscope is used to measure the thickness of the epitaxial *** with perovskite-based photodetectors without epitaxial growth layer,perovskite-based photodetectors with epitaxial growth layer have lower dark current density and higher optical responsibility.

关键词： Crystal perovskite epitaxial

Formation mechanism of twin domain boundary in 2D materials: The case for WTe2

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Nano Research 2019年第3期12卷 569-573页

作者： guan-Yong Wang Weiyu Xie Dan Xu Hai-Yang Ma Hao Yang Hong Lu Hao-Hua Sun Yao-Yi Li Shuang Jia Liang Fu Shengbai Zhang Jin-Feng Jia Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education) School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute Troy New York 12180 USA Institute of chemical Materials China Academy of Engineering Physics (CAEP) P. O. Box 919-327 Mianyang 621900 China International Center for Quantum Materials School of Physics Peking University Beijing 100084 China Department of Physics Massachusetts Institute of Technology Cambridge MA 02139 USA Tsung-Dao Lee Institute Shanghai 200240 China

Our scanning tunneling microscopy (STM) study observes, for the first time, twin domain boundary (TDB) formations on the surface of WTe2 single crystal, which is glued by solidifying indium to Si substrate. In these TDB regions, a large inhomogeneous strain field, especially a critical shear strain of about 7%, is observed by geometric phase analysis. This observation does not obey the old believe that a small mechanical stress is sufficient to drive thermally-induced TDB formations in two-dimensional materials. To resolve the contradiction, we perform density functional theory calculations combined with elasticity theory analysis, which show that TDBs on WTe2 are entirely displacement-induced, for which a critical strain is necessary to overcome the onset barrier.

关键词： twin domain boundary seanning tunneling microscopy (STM) density functional theory strain WTe2

维普期刊数据库评论

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赵晔《韩诗》学表微

北京社会科学 2019年第10期 78-88页

作者：吕冠南山东大学儒学高等研究院国际汉学研究中心

东汉会稽学者赵晔素以《吴越春秋》饮誉学林,但其本位身份乃是研究《韩诗》的经师,故《后汉书》将其列入《儒林传》,以明其主要学术成就体现在经学领域。赵晔师从东汉《韩诗》学派大师杜抚,撰写了三部《韩诗》学著作,并影响了会稽地区... 详细信息

东汉会稽学者赵晔素以《吴越春秋》饮誉学林,但其本位身份乃是研究《韩诗》的经师,故《后汉书》将其列入《儒林传》,以明其主要学术成就体现在经学领域。赵晔师从东汉《韩诗》学派大师杜抚,撰写了三部《韩诗》学著作,并影响了会稽地区的学术氛围。遗憾的是,赵晔的《韩诗》学著作已全部亡佚,现已无从了解这些著作的具体内容。但就散见各处的相关史料细加钩稽,仍可大体考出赵晔《韩诗》学的渊源、著作及影响,从而较为客观真实地还原赵晔《韩诗》学的基本面相。

关键词：赵晔《韩诗》经学史

荧光双重敏感响应型水溶聚合物的合成及其发光性能研究

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高分子学报 2012年第2期22卷 187-193页

作者：关晓琳来守军重庆三峡学院化学与环境工程学院熏庆404000

将丙烯酰氯与荧光素反应,合成出丙烯酸酯单体3-丙烯酰氧基荧光素(Ac-Flu),然后采用自由基溶液聚合法将Ac-Flu与丙烯酰胺(AM)共聚,制备得到含有荧光素生色团的水溶性荧光共聚物poly(Ac-Flu-co-AM).合成单体Ac-Flu和共聚物poly(Ac-Flu-co-... 详细信息

将丙烯酰氯与荧光素反应,合成出丙烯酸酯单体3-丙烯酰氧基荧光素(Ac-Flu),然后采用自由基溶液聚合法将Ac-Flu与丙烯酰胺(AM)共聚,制备得到含有荧光素生色团的水溶性荧光共聚物poly(Ac-Flu-co-AM).合成单体Ac-Flu和共聚物poly(Ac-Flu-co-AM)采用核磁(NMR),质谱(HR-MS),红外光谱(FTIR),示差扫描量热法(DSC),可见紫外分光光度仪(UV-Vis)等方法进行了结构表征,同时采用荧光光谱对共聚物poly(Ac-Flu-co-AM)的荧光极其荧光对温度和pH敏感响应性进行了测定研究.结果表明,poly(Ac-Flu-co-AM)的水溶液和薄膜在520 nm附近均具有较强的荧光发射.其中,水溶液荧光强度在0～60℃范围内随着温度的升高呈线性下降,表现出较好的温度敏感响应性质.同时,水溶液荧光强度在pH=4～10范围内随着碱性的增强而升高,表现出较好的pH敏感响应性质.

关键词： 3-丙烯酰氧基荧光素(Ac-Flu) 水溶性聚合物荧光双重荧光敏感响应