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Three interpenetrated copper(Ⅱ) coordination polymers based on a V-shaped ligand:Synthesis,structures,sorption and magnetic properties

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Science China Chemistry 2011年第9期54卷 1446-1453页

作者： ZHAnG XiaoFeng YAnG Qian ZHAO JiongPeng HU Tong-Liang CHAnG Ze bu Xian-He Tianjin Key Laboratory of Metal & Molecule-based Material Chemistry Department of ChemistryNankai UniversityTianjin 300071China

Three new CuⅡ coordination polymers,[Cu2(oba)2(H2O)(DMF)].3H2O(1),[Cu4(oba)4(DMF)4].***(2) and [Cu2(oba)(hmp)2](3)(H2oba = 4,4'-oxybis(benzoic acid),Hhmp = 2-pyridine methanol,DMF = n,n'-dimethylformamide) were synthesized by solvothermal reactions and characterized by single-crystal X-ray *** complexes 1 and 2 take three-dimensional(3D) three-fold interpenetrating PtS topology with 1D *** complex 3,Cu4 clusters were formed by the chelating hmp ligands,and then the clusters were further linked by oba ligands to form a 3D three-fold interpenetrating dia topology *** 2,n2 sorption shows type I isotherm with BET surface areas of 562 m2 g-1 and Langmuir surface area of 747 m2 g-1,*** 77 and 87 K,the hydrogen uptakes of complex 2 are 0.89 wt% and 0.57 wt%,*** investigation showed the ferromagnetic coupling between CuII ions and very weak antiferromagnetic interaction between Cu4 clusters in complex 3.

关键词： copper(Ⅱ) MOF interpenetration sorption magnetic properties

Structure and magnetism of carboxylate/EO-azido-mixed-ligands bridged Cu~Ⅱ systems

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Chinese Science bulletin 2009年第23期54卷 4303-4308页

作者： ZHAO JiongPeng HU BoWen YAnG Qian LIU FuChen HU TongLiang bu XianHe Department of Chemistry Nankai University Tianjin 300071 China

Using two structurally related benzoates bearing different H-bond acceptors as co-ligands, three new azido-CuⅡ compounds, [Cu(L1)(n3)(H2O)]n (1), [Cu(L1)(n3)(MeOH)]n (2), and [CuL2HL2(n3)3(H2O)]n (3) (HL1 = 4-nitrobenzoic acid; HL2 = 2-phenyl-4-quinolinecarboxylic acid), have been synthesized and structurally characterized. 1 is a carboxylate/EO-azido bridged copper chain, forming 3D structure by H-bonds, and 2 has a similar chain structure as 1 but forming a 2D structure by H-bonds, while 3 is a 3D supramolecular network with ternary center H-bonds. Magnetic study indicates that domain ferromagnetic coupling interactions were found to exist in complexes 1 and 3.

关键词：叠氮化合物结构表征混合配体主任行政羧酸硝基苯甲酸铁磁性耦合

施肥对日本落叶松母树种子球果和形质特征的影响

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西南林业大学学报（自然科学） 2024年第3期44卷 10-17页

作者：王骞春战金伟杨圆圆李光卜鹏图陈若楠冯健辽宁省林业科学研究院辽宁沈阳110032 国有清原满族自治县大孤家林场辽宁抚顺113300 岫岩满族自治县国有清凉山林场辽宁鞍山114312 国有清原满族自治县城郊林场辽宁抚顺113300 辽宁白石砬子森林生态系统国家定位观测研究站辽宁丹东118201

以日本落叶松1.5代和2代种子园为研究对象,施用n肥、P肥、K肥,采用正交试验设计,调查并分析了施肥处理对日本落叶松种子园母树球果和种子特性的影响,有效提高落叶松种子园种子产量,满足生产上对落叶松良种的需求。结果表明:从球果形质... 详细信息

以日本落叶松1.5代和2代种子园为研究对象,施用n肥、P肥、K肥,采用正交试验设计,调查并分析了施肥处理对日本落叶松种子园母树球果和种子特性的影响,有效提高落叶松种子园种子产量,满足生产上对落叶松良种的需求。结果表明:从球果形质特征上看,施肥可显著促进日本落叶松1.5代和2代种子园单果质量、球果纵径和横径的增加,其中,1.5代种子园中,“n(0.4 kg/株)+P(0.6 kg/株)+K(0.6 kg/株)”处理的单果质量和球果纵径最大,分别达到4.01g和3.14cm,分别为CK的1.79倍和1.37倍,“n(0.2kg/株)+P(0.6kg/株)+K(0.4kg/株)”处理的球果横径最大,达到2.26cm,为CK的1.1倍;2代种子园中,“n(0.2 kg/株)+P(0.8 kg/株)+K(0.6 kg/株)”处理的单果质量、球果纵径和横径等指标均较高,分别达到8.23g、3.74 cm和2.58 cm。从种子形质特征上看,施肥对日本落叶松1.5代、2代种子园种子形质指标的影响有限,施肥仅对1.5代种子园种子纵径、横径和侧径及2代种子园千粒质量有显著影响。较高的K肥和适量的n肥施用量有利于球果和种子的增大,日本落叶松种子园施肥较优方案为n肥0.4 kg/株、P肥0.6 kg/株、K肥0.6 kg/株。

关键词：日本落叶松球果种子形质种子园

Synthesis and property of imidazolium oxidative-thermoregulated ionic liquids

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Chinese Science bulletin 2014年第34期59卷 4705-4711页

作者： Fengli Yu Chunyu Liu Congxia Xie Bing Yuan Tongan bu Shitao Yu State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology College of Chemical Engineering Qingdao University of Science and Technology

A series of novel imidazolium oxidative-thermoregulated bifunctional ionic liquids(ILs) have been synthesized by introducing the thermoregulated structural unit into imidazolium cation and using heteropolyanion as the anion of ILs. The structures of these new type of taskspecific ionic liquids(TSILs) are characterized by FT-IR and1 H nMR. The thermostability of ILs is analyzed by thermogravimetry. The thermoregulated properties of ILs in aqueous and organic solvents are mainly *** ILs have the corresponding cloud points(CPs) in aqueous. The effects of IL concentration, polymerization degree, inorganic additives and organic additives on the CP are studied. IL/DMF/n-heptane or n-octane biphasic system has the corresponding critical solution temperature(CST),and has the feature of ‘‘homogeneous at high temperature,heterogeneous at low temperature''. The effects of IL dosage and polymerization degree on the CST are ***/DMF/n-octane thermoregulated biphasic system has been successfully applied for catalytic oxidative desulfurization of model fuels. This study opens up a new way for catalytic oxidation to achieve an integration of homogeneous catalysis and heterogeneous separation.

关键词：催化氧化脱硫离子液体温控咪唑合成杂多阴离子财产结构单元

Electrochemical Probe of Hydroxylation of 4-nitro-phenol by Cytochrome C with Hydrogen Peroxide

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Chemical Research in Chinese Universities 1998年第2期14卷 45-51页

作者： ZHU Yi-min WAnG Jin-cheng LI Jing-hong DOnG Shao-jun bu Feng-quan Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022 norma n Bethune Univer sity of Medica l Science Cha ngchun130023

bu Fengquan(norman Bethune University of Medical Science, Changchun, 130023)(Received Dec. 2, 1996) The reaction of hydrogen peroxide with cytochrome c makes them coupled to lead to the hydroxylation of 4-nitrophenol. In situ electrochemical probe was used to detect the hydroxylation of 4-nitrophenol, which can avoid the tedious extraction procedure, the loss of the active species and the interference of some colored substances in the detection of 4-nitrocatechol by spectroscopic method. The hydroxyl radical scavengers mannitol and sodium benzoate did not eliminate hydroxylation, but the inhibitory effect of uric acid on the hydroxylation lead to the formation of the ferryl species of the protein during the reaction. These studies suggest that the electrochemical probe might efficiently detect the trace 4-nitrocatechol from the onset of the hydroxylation reaction and thus provides a more sensitive tool.

关键词： Hydrogen peroxide Hydroxylation of 4-nitrophenol Cytochrome c

Supplementation with sodium butyrate improves growth and antioxidant function in dairy calves before weaning

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Journal of Animal Science and Biotechnology 2021年第1期12卷 305-313页

作者： Wenhui Liu ALa Teng Zhu La Alexander Evans Shengtao Gao Zhongtang Yu Dengpan bu Lu Ma Institute of Animal Science State Key Laboratory of Animal NutritionChinese Academy of Agricultural SciencesNo.2 Yuanmingyuan West RoadBeijing 100193People’s Republic of China School of Agriculture&Food Science University College DublinBelfieldDublin 4Ireland Department of Animal Sciences The Ohio State UniversityColumbusOH 43210USA Joint Laboratory on Integrated Crop-Tree-Livestock Systems of the Chinese Academy of Agricultural Sciences(CAAS) Ethiopian Institute of Agricultural Research(EIAR)and World Agroforestry Center(ICRAF)Beijing 100193People’s Republic of China.

Background: There is increasing research interest in using short-chain fatty acids(SCFAs) including butyrate as potential alternatives to antibiotic growth promoters in animal production. This study was conducted to evaluate the effects of supplementation of sodium butyrate(SB) in liquid feeds(milk, milk replacer, and the mixture of both)on the growth performance, rumen fermentation, and serum antioxidant capacity and immunoglobins in dairy calves before weaning. Forty healthy female Holstein calves(4-day-old, 40 ± 5 kg of body weight) were housed in individual hutches and randomly allocated to 1 of 4 treatment groups(n = 10 per group) using the RAnD function in Excel. The control group was fed no SB(SB0), while the other three groups were supplemented with 15(SB15),30(SB30), or 45(SB45) g/d of SB mixed into liquid feeds offered. The calves were initially fed milk only(days 2 to 20), then a mixture of milk and milk replacer(days 21 to 23), and finally milk replacer only(days 24 to 60).Results: The SB supplementation enhanced growth and improved feed conversion into body weight gain compared with the SB0 group, and the average daily gain increased quadratically with increasing SB supplementation. no significant effect on rumen pH;concentrations of nH_3-n, individual and total VFAs;or acetate:propionate(A:P) ratio was found during the whole experimental period. Serum glutathione peroxidase activity increased linearly with the increased SB supplementation, while the serum concentration of maleic dialdehyde linearly decreased. Serum concentrations of immunoglobulin A, immunoglobulin G, or immunoglobulin M were not affected by the SB supplementation during the whole experimental ***: Under the conditions of this study, SB supplementation improved growth performance and antioxidant function in pre-weaned dairy calves. We recommended 45 g/d as the optimal level of SB supplementation mixed into liquid feeds(milk or milk replacer) to improve the growth and ant

关键词： Antioxidant activity Calf Immune function Sodium butyrate

Synthesis of energetic coordination polymers based on 4-nitropyrazole by solid-melt crystallization in non-ionization condition

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Defence Technology（防务技术） 2023年第10期28卷 13-22页

作者： Ting-wei Wang Shu bu Kun Wang Lu Zhang Zhen-xin Yi Shun-guan Zhu Jian-guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China School of Chemical Engineering Nanjing University of Science and Technology200 Xiaolingwei StreetXuanwuNanjing210094China Department of Chemistry Laboratory of Structure and Functional Regulation of Hybrid MaterialsAnhui UniversityMinistry of EducationHefei230601China

Based on the theory of crystallization,a solvent-free solid-liquid phase crystallization method called solid-melt crystallization was designed to prepare energetic coordination *** target compounds[Cu(nPyz)_(4)nO_(3)]·nO_(3)(ECPs-1)and Cu(nPyz)_(4)(ClO_(4))_(2)(ECCs-2)were prepared through programmed heating and cooling by using 4-nitropyrazole(nPyz),(Cu(nO_(3))_(2)·5H_(2)O and Cu(ClO_(4))_(2)·5H_(2)O) as raw *** addition,crystallization pre-experiments and annealing experiments also verified the feasibility of the *** structures were confirmed by IR,elemental analysis,single-crystal X-ray diffraction and powder X-ray *** physicochemical properties and sensitivity test results showed that ECCs-2 has better thermal stability(T_(d)=221℃),while ECPs-1 is less sensitive to mechanical stimuli(IS=12 J,FS=240 n).Calculations based on EXPLO5 and the Kamlet-Jacobs equation showed that ECCs-2 has more considerable detonation performance(P=25.2 GPa,D=7.5 km/s).In comparison,the more intuitive results from the Hn test,flame test,thermal resistance test and lead plate explosion test revealed that ECCs-2 has an“acceptable”detonation *** laser detonation test also showed that ECCs-2 is a promising excellent laser detonation material(E=408 mJ,P=24 W,τ=17 ms).

关键词： 4-Amino-1,2,5-oxadiazole-3-carbohydrazide Crystallization Coordination polymers Laser Primary explosives

Effect of Molecular Size of Solutes on Their Partial Molar Volumes in Supercritical n-Pentane

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Chinese Chemical Letters 2001年第1期12卷 81-82页

作者： Xiao Gang ZHAnG Hai Fei ZHAnG bu Xing HAn Bao Ke ZHAnG Qing HUO Center for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100080 Institute of Chemistry and Engineering Beijing United UniversityBeijing 100023

The densities of n-pentane, methane-n-pentane, propane-n-pentane, n-heptane-n-pentane, and n-decane-n-pentane binary mixtures were determined at 476.5K in the pressure range from 2 to 5 MPa. The partial molar volumes of the solutes in n-pentane were calculated using the density data. It was found that the partial molar volumes of methane and propane are positive, while those of n-heptane and n-decane are negative.

关键词： Density Partial molar volume Supercritical fluid

Electrochemical urea synthesis by co-reduction of CO_(2) and nitrate with Fe^(Ⅱ)-Fe^(Ⅲ)OOH@BiVO_(4) heterostructures

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Journal of Energy Chemistry 2023年第9期84卷 385-393页

作者： Hua-Qing Yin Zuo-Shu Sun Qiu-Ping Zhao Lu-Lu Yang Tong-bu Lu Zhi-Ming Zhang Institute for new Energy Materials&Low Carbon Technologies School of Chemistry and Chemical EngineeringSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

Traditional urea synthesis under harsh conditions is usually associated with high energy input and has aroused severe environmental *** C-n coupling by converting nitrate and CO_(2) into urea under ambient conditions represents a promising alternative *** it was still limited by the strong competition between nitrate electrochemical reduction(nO_(3)ER) and CO_(2) electrochemical reduction(CO_(2)ER).Here,Fe^(Ⅱ)-Fe~ⅢOOH@BiVO_(4)-n heterostructures are constructed through hydrothermal synthesis and exhibited superior performance toward urea electrosynthesis with nO_(3)~-and CO_(2) as *** optimized urea yield and Faradaic efficiency over Fe^(Ⅱ)-Fe~ⅢOOH@BiVO_(4)-2 can reach13.8 mmol h^(-1) g^(-1) and 11.5% at-0.8 V *** hydrogen electrode,which is much higher than that of bare FeOOH(3.2 mmol h^(-1) g^(-1) and 1.3%),pristine BiVO_(4)(2.0 mmol h^(-1) g^(-1) and 5.4%),and the other Fe^(Ⅱ)-Fe~ⅢOOH@BiVO_(4)-n(n=1,3,5) *** experiments have verified that BiVO_(4)and FeOOH are subreaction active sites towards simultaneous CO_(2)ER and nO_(3)ER,respectively,achieving co-activation of CO_(2) and nO_(3)~-on Fe^(Ⅱ)-Fe~ⅢOOH@BiVO_(4)-***,the urea synthesis via the ^(*)CO and nO*intermediates and C-n coupling was confirmed by the in situ Fourier transform infrared *** work not only alleviates the CO_(2) emission and nitrate pollution but also presents an efficient catalyst for synergistic catalysis towards sustainable urea synthesis.

关键词： Electrocatalysis Urea synthesis CO_(2)reduction nitrate conversion