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金属硼化物的制备、性质与应用研究进展
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作者 赵小军 高胜利 刘志宏 《大学化学》 CAS 2023年第11期95-105,共11页
金属原子与硼原子间电荷转移量决定了金属硼化物中化学键的成键方式、成键强弱和功能特性。金属硼化物的制备、晶体结构和应用一直是化学和材料领域的研究热点。基于金属硼化物广泛的应用前景以及其在国内外多数基础无机化学教材中的介... 金属原子与硼原子间电荷转移量决定了金属硼化物中化学键的成键方式、成键强弱和功能特性。金属硼化物的制备、晶体结构和应用一直是化学和材料领域的研究热点。基于金属硼化物广泛的应用前景以及其在国内外多数基础无机化学教材中的介绍非常有限,本文结合史实文献和最新研究成果,重点介绍了碱金属/碱土金属硼化物、过渡金属硼化物和稀土金属硼化物的结构、性质、制备和应用研究进展。拓展了金属硼化物在教学中的深入介绍,有助于提升学生的知识视野,体现科学研究对本科教学内容改革的推进作用。 展开更多
关键词 金属硼化物 结构 性质 制备 应用
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Reservoir Characteristics and Favorable Area Prediction of Chang-6 Reservoir in Zhouguan Area, Ordos Basin
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作者 Yuchuan Liu Mingju Tang shengli gao 《Journal of Geoscience and Environment Protection》 2023年第8期22-32,共21页
Based on the analysis of a large number of core samples, logging results, logging interpretation data and dynamic data in the study area, the characteristics of Chang 6 reservoir in Zhouguan area of Baihe area are stu... Based on the analysis of a large number of core samples, logging results, logging interpretation data and dynamic data in the study area, the characteristics of Chang 6 reservoir in Zhouguan area of Baihe area are studied, and the favorable reservoir areas in the study area are predicted. The results show that the lithology of Chang 6 reservoir is mainly light gray and gray fine-grained to very fine-grained feldspar lithic sandstone. The pore types are mainly residual intergranular pores and feldspar dissolved pores, including debris dissolved pores and microfractures. The porosity and permeability values are low, which belongs to low porosity-low permeability and ultra-low permeability reservoirs. According to the reservoir distribution characteristics and related data, the Chang 6 reservoir in the study area is divided into two types, mainly Class II and Class III reservoirs. The comprehensive evaluation predicts that the spatial distribution of the favorable area of Chang 6 reservoir is not uniform, but the distribution area is large, which has broad exploration and development value, and provides the necessary conditions for the distribution study of the favorable oil-bearing zone in this area and the preparation for the next exploration and development. 展开更多
关键词 Extension Group Baihe Oil Region Sedimentary Microfacies Basic Characteristics of Reservoir Favorable Zone
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3D Co(II, III) mixed-valence metal-organic framework affording field-induced slow magnetic relaxation
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作者 Sheng Zhang Xiangyu Liu +8 位作者 Bin Liu Zhengqiang Xia Weitao Wang Qi Yang Hongshan Ke Qing Wei Gang Xie Sanping Chen shengli gao 《Science China Chemistry》 SCIE EI CAS CSCD 2015年第6期1032-1038,共7页
A 3D mixed-valence Co(Ⅲ)-Co(Ⅱ) compound [Co9(bta)10(Hbta)2(H2O)10]n·[22(H2O)]n (1) (H2bta=N,N-bis(1H-tetrazole-5- yl)-amine) was hydrothermally synthesized by reaction of Co(NO3)2·6H2O ... A 3D mixed-valence Co(Ⅲ)-Co(Ⅱ) compound [Co9(bta)10(Hbta)2(H2O)10]n·[22(H2O)]n (1) (H2bta=N,N-bis(1H-tetrazole-5- yl)-amine) was hydrothermally synthesized by reaction of Co(NO3)2·6H2O with H2bta·H2O. Compound 1 consists of three kinds of distorted-octahedral [CoⅡ(N4O2)] paramagnetic nodes which are separated by [CoⅢ(bta)2(Hbta)]2-/[CoⅢ(bta)3]3- dia- magnetic linkers to generate a 3D porous metal-organic framework (MOF) with alternative …Co(Ⅲ)…Co(II)… array and channels incorporating water molecules. Under an applied magnetic field of 4000 Oe, compound 1 exhibits slow relaxation of magnetization at low temperatures, giving AE/kB=30.O0 K and ι0=2.0×10^-8 s. 展开更多
关键词 Co(Ⅱ Ⅲ) mixed-valence metal-organic framework slow magnetic relaxation
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Coordination behavior between zinc salts and L-α-methionine 被引量:1
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作者 shengli gao Jianrui Liu +3 位作者 Mian Ji Xuwu Yang Fengxing Zhang Zhongjin Li 《Chinese Science Bulletin》 SCIE EI CAS 1998年第18期1527-1531,共0页
The solubility properties of ZnCl\-2/ZnAc\-2/ZnSO\-4MetH\-2O systems at 25℃ in the whole cocentration range have been investigated by phase equilibrium method. The results indicate that ZnAc\-2 and ZnSO\-4 systems ar... The solubility properties of ZnCl\-2/ZnAc\-2/ZnSO\-4MetH\-2O systems at 25℃ in the whole cocentration range have been investigated by phase equilibrium method. The results indicate that ZnAc\-2 and ZnSO\-4 systems are both simple systems, which do not exist any compound; there are 2 complexes formed in ZnCl\-2 system: Zn(Met)Cl\-2 and Zn(Met)\-2Cl\-2·2H\-2O. Under the direction of phase equilibrium result, 2 solid complexes have been prepared in water and characterized by chemical analysis, IR, Xray diffraction. Their combustion energies have also been determined by means of a RBCtype1 rotatingbomb calorimeter, and their standard enthalpies of formation, Δ f, coor(s)H O-, have been calculated which are (-828.32±3.00) kJ·mol -1 and (-1 117.08±6.15) kJ·mol -1, respectively. 展开更多
关键词 ZINC SALTS L-METHIONINE phase EQUILIBRIUM complex standard formation enthalpy.
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