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90篇 您的检索式:作者名="Inorganic"
    题名 作者 年代 出处 被引量
1铝、镁轻合金中的稀土显示文摘综述了稀土镁和稀土铝合金的晶体化学、热力学和相图数据,根据其应用前景特别注意了富镁、富铝稀土合金及添加稀土对合金性能的影响,报道了若干稀土镁、稀土铝及含两个不同稀土的镁、铝合金的研究结果。对富镁、富铝的二元和三元合金相的结晶化学及形成规律进行了总结和讨论,并对有确定结构的合金精细设计和可能的应用提出了建议。Ferro R, Saccone A, Borzone G( Division of General and Inorganic Chemistry and Metallurgy Department of Chemistry, University of Genova, Dodecaneso 31,I 16146 Genova, Italy ) 1997中国稀土学报1997,15,3:36
2Photocatalytic degradation of coking wastewater by nanocrystalline (Fe,N) co-doped TiO_2 powders显示文摘The yellowish nitrogen and iron co-doped nanocrystalline titanium dioxide ((Fe,N) co-doped TiO2) powders have been prepared by hydrothermal method using TiOSO4 and CO(NH2)2 as starting materials.The grain size of the synthesized powders was estimated as 11 nm by Scherrer's method.The UV-Vis diffuse reflectance spectra indicated that the light absorption edge of the powders was red-shifted up to 605 nm.And the doped TiO2 powders exhibited good photocatalytic activities during the photo-degradation of coking wastewater under sunshine irradiation.The biotreatability of the coking wasterwater after photocatalytic degradation was improved greatly and it is more suitable to be further treated by biochemical method.LIU WenXiu1,LIU Qing1,LI XiuFang1,2,SONG YunTing1 & CAO WenBin1 1 Department of Inorganic Nonmetallic Materials,School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China 2 Tangshan Iron & Steel Co.,Ltd,Tangshan 063016,China 2010Science China(Technological Sciences)2010,53,6:7
3Hydrothermal Synthesis and Characterization of a Novel Supramolecular Network Compound [Co(IN)_2(H_2O)_4](IN=Isonicotinate)显示文摘A novel supramolecular compound, [Co(IN)2(H2O)4](1), was synthesized by means of the hydrothermal method and its structure was characterized with elemental analysis, FT-IR spectrum, TGA and X-ray diffraction. Though the unit cell structure of the title compound is only monomeric, all these units as building blocks are assembled into a novel three-dimensional supramolecular network via the widely hydrogen-bonding and π-π stacking interactions.JIA Hong-bin 1,3, YU Jie-hui 1, DING Hong 1, XU Ji-qing 1**, YE Ling 2, JING Wei-jie 1WANG Tie-gang 1, XU Jia-ning 1, QU Xue-jian 1 and LI Zeng-chun 1,31. College of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023, P. R. China 2. Key Laboratory of Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130023, P. R. China 3. Department of Chemistry, Inner Mongolia University for Nationalities, Tongliao 028000, P. R. China 2002Chemical Research in Chinese Universities2002,18,4:5
4Ln_2MO_4 cathode materials for solid oxide fuel cells显示文摘One of the major challenges to develop 'intermediate temperature' solid oxide fuel cells is finding a novel cathode material, which can meet the following requirements: (1) high electronic conductivity; (2) chemical compatibility with the electrolyte; (3) a matched thermal expansion coefficient (TEC); (4) stability in a wide range of oxygen partial pressure; and (5) high catalytic activity for the oxygen reduction reaction (ORR). In this short review, a survey of these requirements for K2NiF4-type material with the formula Ln2MO4, Ln = La, Pr, Nd, Sm; M = Ni, Cu, Fe, Co, Mn, is presented. The composition-dependent TEC, electrical conductivity and oxygen transport property are considered. The Ln2MO4 materials exhibit improved chemical stability and compatibility with most of the traditional electrolytes. The complete fuel cells integrated with Ln2MO4 materials as cathodes show promising results. Furthermore, these materials are considered as cathodes of protonic ceramic fuel cell (PCFC), and/or anodes of high temperature steam electrolysis (HTSE). First results show excellent performances. The versatility of these Ln2MO4 materials is explained on the basis of structural features and the ability to accommodate oxygen non-stoichiometry.ZHAO Hui, LI Qiang & SUN LiPing Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China 2011Science China Chemistry2011,54,6:5
5Rare Earth Metals in Light Alloys显示文摘RareEarthMetalsinLightAloysFeroR,SacconeA,BorzoneG(DivisionofGeneralandInorganicChemistryandMetalurgy,DepartmentofChemistry,U...( Division of General and Inorganic Chemistry and Metallurgy, Department of Chemistry, University of Genova, I 16146 Genova, Italy ) 1997Journal of Rare Earths1997,15,1:4
6Hydrothermal synthesis and characterization of rare-earth ruthenate pyrochlore compounds R_2Ru_2O_7(R=Pr_(3+),Sm(3+)-Ho(3+))显示文摘A series of pyrochlore oxides, R2Ru2O7 (R=Pr3+, Sm3+–Ho3+) were synthesized under mild hydrothermal conditions. All the samples crystallize in uniform octahedron characteristically. The products were characterized by powder X-ray diffraction, scanning electron microscopy, energy-disperse X-ray spectroscopy, and dc susceptibility, and the factors that affected the crystallization were discussed. It was found that the purity of products depends strongly on the raw materials and the amount of alkalinity in the initial reaction mixtures. The ZFC and FC susceptibilities of all of the compounds R2Ru2O7 at low temperature were also measured and discussed.YAO LinRan, WANG Dong, PENG Wen, HU WeiWei, YUAN HongMing & FENG ShouHua State key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry, Jilin University, Changchun 130023, China 2011Science China Chemistry2011,54,6:3
7EFFECT OF DIFFERENT OPERATION METHODS ON METHANE HYDRATE FORMATION显示文摘Three experiments of static state storage method, low-temperature and constant-pressure storage method and low-temperature and constant-pressure storage method were carried out to investigate which method was best in gas hydrate. The relationships of hydrate rate, capacity and liquid temperature versus time were derived and three results were contrasted. The experimental results show lowtemperature and constant-pressure method is better than the other two methods because it's operation period is shorter and storage capacity is larger than the other two. Low-temperature and constant-pressure method is the best method. So new method will be new research objective.HAO Wenfeng~(1,2), FAN Shuanshi~2 and WANG Jinqu~1 (~1 Institute of Adsorption and Inorganic Membrane, Dalian University of Technology, Dalian 116012, Liaoning, China ~2 Guangzhou Institute of Energy Canversion, The Chinese Academy of Sciences, Guangzhou 510070, Guangdong, China) 2003化工学报2003,54,z1:3
8PREPARATION OF HIGH THERMAL EXPANSION COEFFICIENT PORCELAINS FUSED TO METALS显示文摘Usually the thermal expansion coefficients (TEC) of metals are higher than that of porcelains. In order to match the TECs in the case of coating porcelains on metals, high TEC porcelains are needed. In this research, the high TEC phase leucite(KAlSi2 O6) in the high TEC porcelain was prepared by sol-gel method. The crystal size of leucite made by sol-gel is about 77nm through controlling the process parameters. The process from xerogel to leucite was investigated by means of DSC (differential scanning calorimetry), TG (thermogravimetry), XRD ( X-ray diffraction) and IR(infrared absorption spectrum). Leucite had been detected after the gel was treated at 900°C, this formation temperature is about 250°C lower than that of melting method.The porcelain made from 50% of the leucite powder and 50%o of low fused temperature frit has an average TEC of 19.2× 10-6/° C from room temperature to 450°C, which is much higher than the common porcelains.J.P. Yang and J.Q. WuDept. of Inorganic Materials, South China University of Technology, Guangzhou 510640, China 2003Acta Metallurgica Sinica(English Letters)2003,16,4:3
9Positorn annihilation study on point defects in lead tungstate显示文摘A study on point defects in lead tungstate (PbWO4) by using positron annihilation lifetime method is presented. The measurement was carried out for the cases of untreated, vacuum-annealed, oxygen- annealed and La-doped PbWO4 crystals.It was found that the components τ2, which reflect the positron annihilation in point defects, are different from each other for each case. Some tentative models for the defects are discussed.GU Mu TANG Xue-Feng TONG Hong-Yong LIANG Ling YAO Ming-Zhen CHEN Ling-Yan(Department of Physics, Tongji University, Shanghai 200092)LIAO Jing-Ying SHEN Ding-Zhong YIN Zhi-Wen(Laboratory of Functional Inorganic Materials, the Chinese Academy of Scien 2000Nuclear Science and Techniques2000,11,2:2
10Effect of Sintering Temperature and Zinc Content on Some Properties of Li-Zn Ferrites显示文摘A.M.El-Saird (Inorganic Chemistry Dept., National Research Centre, Dokki, Cairo, Egypt)S.B.Hanna(Refractories and Building Materials Dept., National Research Centre, Dokki, Cairo, Egypt) 1996Journal of Materials Science & Technology1996,12,5:2
11Transition metal coordination polymers with polycarboxylic acid as bridging ligands:Synthesis and structure characterization of[Fe(μ_(4)-bta)_(0.5)(phen)(OH)]_(n)显示文摘A new 2D (two-dimensional) coordination polymer, [Fe(μ4-bta)0.5(phen)(OH)]n (1), has been hydrothermally synthesized with FeCl3·6H2O, Na4bta (H4bta = 1,2,4,5-benzentetra- carboxylic acid), 1,10-phen (1,10-phenanthroline) and H2O as raw materials. The crystals of the compound belong to monoclinic P21/n space group, a = 1.0129(2) nm, b = 0.9265(2) nm, c = 1.5696(3) nm,β = 91.37(3) o, V = 1.4721(5) nm3, Z = 3, final R1 = 0.0292, Wr2 = 0.0798 for 2572 [I > 2σ (I )] observed reflections. The result of structure determination shows that in the compound each bta ligand is connected with four FeIII, forming a new μ4-coordination mode. Four deprotonated carboxylic groups of bta link to FeIII ions alternatively through monodentate and bidentate coordination fashion, constructing 2D layer network. The measurement of variable temperature magnetic susceptibility indicates that there exist antiferromagnetic interactions between FeIII ions in the compound. The TGA spectrum displays relatively fine thermal stability of the compound. In addition, IR and UV-Vis spectra of compound 1 have also been measured.XU Jiqing, CHU Deqing, YU Jiehui, WANG Tiegang & TANG AoqingCollege of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023, China Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China 2004Science China Chemistry2004,47,1:2
12Electrochemical deposition of nano-structured ZnO on the nanocrystalline TiO_2 film and its characterization显示文摘One-dimensional structure of ZnO nanorod arrays on nanocrystalline TiO2/ITO conductive glass substrates has been fabricated by cathodic reduction electrochemical deposition methods in the three-electrode system,with zinc nitrate aqueous solution as the electrolyte,and were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),energy-dispersive X-ray (EDX) and photoluminescence (PL) spectra.The effects of film substrates,electrolyte concentration,deposition time,and methenamine (HMT) addition on ZnO deposition and its luminescent property were investigated in detail.The results show that,compared with on the ITO glass substrate,ZnO is much easily achieved by electrochemical deposition on the TiO2 nanoparticle thin films.ZnO is hexagonally structured wurtzite with the c-axis preferred growth,and further forms nanorod arrays vertically on the substrates.It is favorable to the growth of ZnO to extend the deposition time,to increase the electrolyte concentration,and to add a certain amount of HMT in the system,consequently improving the crystallinity and orientation of ZnO arrays.It is demonstrated that the obtained ZnO arrays with high crystallinity and good orientation display strong band-edge UV (375 nm) and weak surface-state-related green (520 nm) emission peaks.LIN JingSheng,FU Wei,JING LiQiang,QU YiChun & LI ZhiJun Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education) School of Chemistry and Material Science,Heilongjiang University,Harbin 150080,China 2010Science China Chemistry2010,53,8:2
13Investigation on the Use of the Weakly Basic Polyacrylate Anion-Exchanger Amberlite IRA-68 for Sorption and Separation of Iminodiacetate Complexes of Rare Earth Elements显示文摘Based on the determined affinity series of rare earth element complexes with IMDA for the anion-exchangers, purification of macroquantities of Nd 3+ from Y 3+, Sm 3+ from Ho 3+, La 3+ from Nd 3+ and La 3+ from Pr 3+ on the weakly basic gel anion-exchanger Amberlite IRA-68 was studied. Using the presented method on 1 L of Amberlite IRA-68 in the acetate form, it is possible to obtain about 240 g Nd 2O 3 purified from Y 2O 3. Great difference in affinity of La 3+ and Nd 3+ as well as Pr 3+ complexes for this anion-exchanger in the acetate form indicates the possibility of applying this process for purification of lanthanum on the increased scale. On 1 L of Amberilte IRA-68 in the acetate form it is possible to obtain about 1125 g La 2O 3 purified from Nd 2O 3. On the basis of these results it can be assumed that unique properties of polyacrylate anion-exchangers enable their application for separation of rare earth elements.Halina Hubicka , Dorota Kolodynska (Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq.3, 20-031 Lublin, Poland) 2002Journal of Rare Earths2002,20,6:2
14A Thermochemical Study on Complex Nickel(Ⅱ) L-α-Histidine显示文摘The formation enthalpy of complex nickel(Ⅱ) histidine(His) in water was determined by means of microcalorimetry in the temperature range of 298 15-323 15 K. The standard enthalpy of the formation of Ni(His) 2+ 2(aq) was calculated. On the basis of the experimental and the calculated results, three thermodynamic parameters(the activation enthalpy, the activation entropy and the activation free energy), the rate constants, three kinetic parameters(the apparent activation energy, the pre exponential constant and the reaction order) of the formation reaction of the title complex were obtained.GAO Sheng li ** , CHEN San ping, HU Rong zu and SHI Qi zhen Shaanxi Key Laboratory of Physico Inorganic Chemistry, Department of Chemistry, Northwest University, Xi′an 710069, P.R. China 2003Chemical Research in Chinese Universities2003,19,2:2
15DFT Thermodynamic Research of the Pyrolysis Mechanism of the Carbon Matrix PrecursorTol uene for Carbon Material显示文摘Based on the experiments, the standard enthalpy△H■of the possible pyrolysis reactions of the carbon matrix precursor toluene was investigated by means of DFT method UB3LYP/ 3-21G *(based on semi-empirical method UAM1 and ab initio method UHF/3-21G*). The com- putation results with UB3LYP/3-21G* coincide with the experimental values well. Then, the mechanism for all types of the pyrolysis reactions of toluene was studied by UB3LYP/3-21G * The geometries of the reactant and the product radicals were optimized, meanwhile, the standard thermodynamic parameters of the pyrolysis reaction at different temperatures (298, 773, 843, 963 and 1 073 K) were calculated. The thermodynamic computation result shows that when the pyrolysis temperature of toluene is lower than 963 K, the reaction path supported by thermody- namics is that the C-H bond of the methyl on the benzene ring breaks and bitoluene form, while the temperature increases (about 1 073 K), the thermodynamic calculation result turns to support the reaction path producing phenyl radicals and methyl radicals. This mechanism is in accord with the experiments.WANG Hui, YANG Hai-feng, RAN Xin-quan WEN Zheng-yi and SHI Qi-zhen (Chemistry Department, Modern Physics Institute and, Key Laboratory of Physics Inorganic Chemistry of Shan-Xi Province, Northwest University, Xi’an 710069, P. R. China) 2001Chemical Research in Chinese Universities2001,17,2:2
16显示文摘 Ute Kuballa Jurgen Jantzen Eckard Simultaneous separation of 17 inorganic and organic arsenic compounds in marine biota by means of high-performance liquid chromatography/inductively coupled plasma mass spectrometry 2000Rapid Communications in Mass Spectrometry2000,16,10:1
17An Encapsulation of the Rare Earth Complex in Modified Mesoporous Molecular Sieve MCM-41显示文摘The encapsulation of a rare earth (RE) complex Eu(DBM)3phen in modified Si- MCM41 with 3 -aminopropyltriethoxy st.lane is reported for the first time. The luminescence intensity of the RE complex in the modified Si-MCM-41 is about 9 times as strong as in unmodified Si- MCM41 and the luminescence of the RE complex in the modified Si-MCM-41 has good color purity.Qing Hong XU Lian She FU Lian Sheng LI Hong Jie ZHANG Qing Quo MENG Ru Ren XU Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Department of Chemistry, Jilin University, Changchun 130023 Key Laboratory of Rare Earth Chemistry & Physic 2000Chinese Chemical Letters2000,11,9:1
18SILICON NITRIDE POWDER SYNTHESIZED BY THERMAL PLASMA METHOD显示文摘SILICONNITRIDEPOWDERSYNTHESIZEDBYTHERMALPLASMAMETHOD¥LiangShuquan;HuangBaiyun;ZhengZiqiao(CentralSouthUniversityofTechnology,...Liang Shuquan Huang Baiyun Zheng Ziqiao(Central South University of Technology, Changsha 410083)Szepvolgyi J (Research Laboratory for inorganic Chemistry of Hungarian Academy of Sciences,H-1502, Budapest, Hungary) 1996中国有色金属学会会刊:英文版1996,6,3:1
19PORE SIZE AND STRUCTURE OF NON-SUPPORTED SILICA MEMBRANES显示文摘PORESIZEANDSTRUCTUREOFNON-SUPPORTEDSILICAMEMBRANES¥YaoZHOU;ZhiGuoSU;XiuRenZHAOandYongYingCHEN(LaboratoryofInorganicChemistry,...Yao ZHOU Zhi Guo SU Xiu Ren ZHAO and Yong Ying CHEN (Laboratory of Inorganic Chemistry, Deparment of Applied Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116012) 1994Chinese Chemical Letters1994,5,10:1
20Intermediate Temperature Sintering of La-Modified Ph(Zn_(1/3)Nb_(2/3))O_3-PbZrO_3-PbTiO_3 Piezoelectric Ceramics显示文摘In order to realize the co--firing with Ag/Pd electrodes in multilayer devices, Ph(Zn1/3 Nb2/3) 1-x-y ZrxTiyO3(0.25Xiangping JIANG, Jun LIAO, Xiaoyong WEI, Guorong LI, Daren CHEN and Qingrui YIN Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China 2001Journal of Materials Science & Technology2001,17,2:1
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