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Chinese Journal of Chemistry 2015年第7期33卷 792-796页

作者： Yangang bi Wenyuan Zhao ying li Tonglai Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China

The reaction of NiCl2 and 3-hydrazine-4-amino-1,2,4-triazole （Hatr） in the mixed solvent of EtOH and H2O yielded a dimer compound （[Ni2（Hatr）2（H2O）2（EtOH）2Cl2]ClzoEtOH） with water and EtOH molecules coordinated to nickle ions. It crystallized in trigonal space group R-3, a=b=29.67（1） A, c=8.95（7） A, β= 120（1）°, as determined by single-crystal X-ray diffraction. Then, they were fully characterized by the IR spectroscopy, differential scanning calorimetry （DSC）, thermogravimetry （TG）, and elemental analysis.

关键词： dimer compound tridentate ligand nickel X-ray diffraction differential scanning calorimetry

Catalytic Oxidation of Hexanol to Hexanal with H_2O_2 Over P-W Heteropoly Compounds

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Chemical Research in Chinese Universities 2001年第3期17卷 293-298页

作者： ZHOU Guang-dong GUO Xiao-hong liU Yan bi ying-li ZHEN Kai-ji Department of Chemistry Jilin UniversityChangchun 130023P.R.China

The syntheses of Keggin and Dawson-structural phospho-tungsto heteropoly compounds and their Peroxo-derivatives(PCWP), and the catalytic performance over this series of catalysts for the selective oxidation of hexanol to hexylaldehyde are reported. By means of IR, NMR and UV-DRS techniques the catalysts were characterized and a comparison of the structural properties of these catalysts before and after the reaction was made. The correlation between the catalytic performance and the structure of this series of catalysts was discussed as well.

关键词： P-W Heteropoly compound Hexanol Hexanal

biosynthesis of Unsaturated Fatty Acids via Mortierella Isabellina Cultivated in a Medium Containing Butanol

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Chemical Research in Chinese Universities 2002年第3期18卷 303-306页

作者： XIAN Mo YAN Ji chang CHENG Tie xin KANG Yi jian li Wen xing bi ying li ZHEN Kai ji College of Chemistry Jilin UniversityChangchun 130023P.R.China College of Chemistry Northeast Normal UniversityChangchun 130024P.R.China Department of Chemical Engineering Qingdao Chimical Industry InstituteQingdao 266042P.R.China

Mortierella isabellina was found to accumulate large amounts of unsaturated fatty acids when it was grown in a medium containing butanol(5 g/L) and yeast extract(10 g/L) and cultivated at 25 ℃ for 5 d during which additional feeding butanol of 2 g/L was fed after being cultivated for 48 h . The resultant mycelial lipids accounted for 40 1% of the dry mycelia, while about 34% of butanol in the medium was converted. The mycelial lipids contained four kinds of unsaturated fatty acids, i.e ., palmitoleic(4 9%), oleic(54 1%), linoleic(10 4%) and linolenic(5 4%) acids. Those accounted for 74 8% of the total fatty acids. The effects of the culture conditions, such as cultivation temperature, initial pH of the medium and additional feeding butanol in the course of cultivation, on the production of mycelial lipids by M. isabellina were studied.

关键词： Mortierella isabellina Butanol Unsaturated fatty acid biosynthesis

External calibrator in global signal experiment for detection of the epoch of reionization

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Research in Astronomy and Astrophysics 2021年第10期21卷 17-26页

作者： Yan Huang Xiang-Ping Wu Quan Guo Qian Zheng bi-ying li Huan-Yuan Shan Ke-Jia Lee Hai-Guang Xu National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China School of Physics and Astronomy Shanghai Jiao Tong University800 Dongchuan RoadShanghai 200240China

We present a conceptual design study of external calibrators in the 21 cm experiment towards detecting the globally averaged radiation of the epoch of reionization(EoR).Employment of external calibrator instead of internal calibrator commonly used in current EoR experiments allows removing instrumental effects such as beam pattern,receiver gain and instability of the system if the conventional three-position switch measurements are implemented in a short time ***,in the new design the antenna system is placed in an underground anechoic chamber with an open/closing ceiling to maximally reduce the environmental effect such as RFI and ground radiation/*** appears that three of the four external calibrators proposed in this paper,including two indoor artificial transmitters and one outdoor celestial radiation(the Galactic polarization),fail to meet our *** motion of the Galactic diffuse emission turns out to be the most probable source as an external calibrator,for which we have discussed the observational strategy and the algorithm of extracting the EoR signal.

关键词： cosmology:observations dark ages reionization radio lines:general methods:observational

Vinyltrimethylsilane as a novel electrolyte additive for improving interfacial stability of li-rich cathode working in high voltage

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Chinese Chemical Letters 2024年第2期35卷 534-538页

作者： bing Jiang Hao li bi Luo Lehao liu lihua Chu Qiaobao Zhang Meicheng li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of New EnergyNorth China Electric Power UniversityBeijing 102206China State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China

Boosting the interfacial stability between electrolyte and li-rich cathode material at high operating voltage is vital important to enhance the cycling stability of li-rich cathode materials for high-performance li-ion *** this work,vinyltrimethylsilane as a new type of organic silicon electrolyte additive is studied to address the interfacial instability of li-rich cathode material at high operating *** cells using vinyltrimethylsilane additive shows the high capacity retention of 73.9%after 300 cycles at 1 C,whereas the cells without this kind of additive only have the capacity retention of 58.9%.The improvement of stability is mainly attributed to the additive helping to form a more stable surface film for li-rich cathode material,thus avoiding direct contact between the electrolyte and the cathode material,slowing down the dissolution of metal ions and the decomposition of the electrolyte under high operating *** findings in this work shed some light on the design of stable cycling performance of li-rich cathode toward advanced li-ion batteries.

关键词： Vinyltrimethylsilane Electrolyte additive li-rich cathode Interfacial stability Capacity retention

Well-dispersed Sb particles embedded on N-doped carbon nanofibers toward high-performance li-ion battery

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Rare Metals 2024年第7期43卷 2994-3006页

作者： ying li Yi-Han Zhao Lu-Lu Zhao Peng-Fei Wang ying Xie Ting-Feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China

The alloy-type material Sb is widely used in the anode materials of lithium-ion batteries(liBs)due to its high theoretical specific ***,its serious volume expansion problem during alloying/dealloying of li~+limits its practical *** this work,C-Sb composite was constructed as anode material of liBs by electrospinning route for the first time,Sb was introduced into the polyacrylonitrile-based hard carbon and coal tar pitch-based soft carbon composite amorphous carbon fiber with a diameter of 300-600 nm,which realized high cycling *** C-Sb-2(the mass ratio of polyacrylonitrile to Sb source is 1:2)electrode displayed charge capacities of 1098.5,930.3,841.7,753.5,643.9 and 545.8 mAh·g^(-1)at 0.1,0.2,0.3,0.5,1 and 2 A·g^(-1),*** when the current density returned to 0.1 A·g^(-1),the charge capacity was 939.3 mAh·g^(-1),revealing good stability and *** introduction of Sb into the amorphous carbon improved its conductivity and addressed the volume expansion issue of high specific capacity Sb during charge/***-situ XRD analysis confirmed the high reversibility of the C-Sb-2 during charging and *** functional theory(DFT)calculations revealed the gradual enhancement of the interface interaction between Sb_(x)li_(y) and amorphous carbon(AMC)with increasing lithium content,contributing to the anchoring of alloy nanoparticles on the AMC surface and buffering the volume change of the ***,the gradual lithiation of Sb facilitated the electron transfer from Sb_(x)li_(y) to *** findings hold promise for designing lithium storage materials with exceptional performance,highlighting the potential of C-Sb composites as anode materials for efficient next-generation lithium storage.

关键词： li-ion battery Metallic Sb Carbon Electrospinning Cycling stability

CATALYSTS FOR OXIDATIVE DIMERIZATION OF METHANE(ODM)—ROLE OF SURFACE liTHIUM IN li-Mn-Mg OXIDES

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Journal of Energy Chemistry 1993年第1期 34-41页

作者： bi ying-li ZHANG Jian-Jun YANG Xiang-Guang ZHEN Kai-Ji Department of Chemistry Jilin University Changchun,Jilin 130023WEI Quan li Sen-Zi The Testing Center Jilin Univerrsity Changchun,Jilin 130023

A series of lithium-doped Mn-MgO catalysts were characterized byXPS,XRD and *** was found that lithium was of considerable significance in improving catalytic properties for *** ion may enter intothe lattice of *** li/Mn>1,new phases of lithium oxide and lithiumcarbonate *** lithium content on surface was detected for catalystsA,Aand *** percentages of adsorbed oxygen species and carbonspecies(CO) were increased with the increase of lithium *** was present on the surface of the catalysts,C-yield and C-selectivitywere greatly increased.

关键词： ROLE OF SURFACE liTHIUM IN li-Mn-Mg OXIDES CATALYSTS FOR OXIDATIVE DIMERIZATION OF METHANE Mn ODM XRD li

IONIC CONDUCTIVITY AND CATALYTIC PERFORMANCE OF A2BO4/La2O3 CATALYSTS FOR OXIDATIVE COUPliNG OF METHANE

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Journal of Energy Chemistry 1993年第3期 203-211页

作者： bi ying-li XIA Xin-Rui li li-Tao ZHEN Kai-Ji Department of Chemistry, Jilin University Changchun, Jilin 130023

A series of La2O3cartalysts modified by A2BO4compounds with supe-rionic conductivity were prepared. It was observed that the addition of A2BO4compounds to La2O3enhances C2yields, and the C2yields over the modified cat-alysts are intimately related with their conductivities. The effects of A2BO4compounds on the conductivity and catalytic performance were discussed. Onlywhen ion A has high conductivity, can the catalyst show good catalytic perfor-mance. A mechanism for interpreting the significant effects of alkali metals wasproposed.

关键词： IONIC CONDUCTIVITY AND CATALYTIC PERFORMANCE OF A2BO4/La2O3 CATALYSTS FOR OXIDATIVE COUPliNG OF METHANE BO La

Effect　of　Steam　on　the　Oxidative　Coupling　of　Methane　over　La-Ba　System　Catalysts

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Chemical Research in Chinese Universities 1997年第1期13卷 41-45页

作者： PIAO Hong, bi ying li and ZHEN Kai ji (Department of Chemistry, Jilin University, Changchun, 130023)

The influence of steam on catalytic performance for the oxidative coupling of methane(OCM) over Ba 2+ promoted La 2 O 3 catalysts was studied. It was shown that the presence of a suitable amount of steam led to a significant increase of the yield and selectivity to C 2 hydrocarbons, a decrease of selectivity to carbon monoxide and some increase of selectivity to carbon dioxide with increasing the amount of water in the feed was also observed. The activity and selectivity of the catalysts are more sensitive to the effect of steam with the variation of Ba 2+ content in the catalysts at a relatively low temperature(650℃). The comparative experiments for OCM with methane oxygen mixture diluted with nitrogen or steam were carried out in order to investigate the role of steam.

关键词： Effect of steam Methane oxidative coupling La Ba system catalysts

Segmental nature of the Red River fault revealed by seismic anisotropy and geological structures

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Science China Earth Sciences 2024年第8期67卷 2423-2443页

作者： ying li Yuan GAO School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Key Laboratory of Earthquake Prediction Institute of Earthquake ForecastingChina Earthquake AdministrationBeijing 100036China

As the western boundary of the Sichuan-Yunnan block(SYB),the Red River fault(RRF)is a major fault that controls deep crustal movement and deformation in the southeast margin of the Tibetan Plateau and regulates middle-lower crustal *** data suggest that the RRF is segmented and exhibits distinct variations in seismicity,velocity structure and crustal deformation from north to *** anisotropy reveals a complex pattern of lateral spatial and vertical stratified distributions.(1)From the perspective of crustal stratification,in the upper crust,the fast wave polarization in the north segment of the RRF is complex and possibly influenced by the Sanjiang lateral collision zone and adjacent faults with varying *** fast wave polarization in the middle segment is in the NW-SE direction,indicating a localized area of closed down or locked up with consistent *** in the south segment,it presents a disordered pattern,signifying complex deep tectonics and stress conditions at the wedged intersection *** the middle-lower crust in the north and south segments of the RRF,the azimuthal anisotropy is strong and consistent with the spatial strike of the weak zone characterized by low-velocity and *** suggests a connection between the anisotropy and the material migration.(2)In the whole crustal scale,the fast wave directions in two sides of the RRF are consistent with the NW-SE tectonic *** indicates that the RRF,as a large fault potentially cutting through the whole crust,strongly controls the surrounding media.(3)In the lithospheric scale,the fast wave polarizations are oriented nearly E-W and independent of the fault strike,consistent with the low P-and S-wave velocity structures and positive radial anisotropy in the upper *** fast wave directions could be related to lithospheric olivine deformation and asthenospheric *** paper suggests a decoupling of deformation between the crust and the lithospheri

关键词： Red River fault Seismic anisotropy Geological structures lithosphere Fault segmentation