Preparation of La0.9RE0.1MnO3 Ultra-fine Particles Used for CH4 Oxidation

Ｐｅｒｏｖｓｋｉｔｅ ｔｙｐｅｏｘｉｄｅｓ (ｇｅｎｅｒａｌｆｏｒｍｕｌａＡＢＯ3 )ｈａｖｅｂｅｅｎａｔｔｒａｃｔｉｎｇｍｕｃｈａｔｔｅｎｔｉｏｎｆｏｒｍｏｒｅｔｈａｎｔｗｏｄｅｃａｄｅｓｄｕｅｔｏｔｈｅｉｒｐｏｔｅｎｔｉａｌｃｏｍｍｅｒｃｉａｌａｐｐｌｉｃａｔｉｏｎｓａｓｃａｔａｌｙｓｔｓｆｏｒｖａｒｉｏｕｓｒｅａｃｔｉｏｎｓ :ｏｘｉｄａｔｉｏｎｏｆＣＯ[1～ 3 ] ａｎｄｌｉｇｈｔｈｙ ｄｒｏｃａｒｂｏｎｓ[4～ 7] ,ｃｏｍｂｕｓｔｉｏｎｏｆｎａｔｕｒａｌｇａｓｏｒＣＨ4 [8～ 1 1 ] (ｔｏｃｏｎｔｒｏｌＮ…     

Polymerization of Acrylonitrile with （Diisopropylamido） Bis（indenyl） Lanthanides

Ｔｈｅｒｅａｒｅａｌｏｔｓｏｆｒｅｐｏｒｔｓａｂｏｕｔｔｈｅｐｏｌｙ ｍｅｒｉｚａｔｉｏｎｏｆａｃｒｙｌｏｎｉｔｒｉｌｅ (ＡＮ) [1～ 3] .Ｉｎｔｈｅｒａｄｉｃａｌｐｏｌｙｍｅｒｉｚａｔｉｏｎ ,ｕｓｕａｌｌｙｉｔｉｓｉｎｉｔｉａｔｅｄｂｙｂｅｎｚｏｐｅｒｏｘｉｄｅ ,Ｋ2 Ｓ2 Ｏ4 Ｎａ2 Ｓ2 Ｏ3,Ｆｅ2 + Ｈ2 Ｏ2 ａｎｄｓｏｍｅｏｒｇａｎｉｃｃｏｍｐｏｕｎｄｓ .Ｔｈｅｒｅ ｐｏｒｔｓｏｎｏｒｇａｎｏｌａｎｔｈａｎｉｄｅｓａｓｓｉｎｇｌｅ ｃｏｍｐｏｎｅｎｔｃａｔａｌｙｓｔｓｗａｓｒａｒｅｌｙｉｎｌｉｔｅｒａ…     

Lanthanide Complex [Nd(dpdo)_4(H_2O)_3][ClO_4]_3·4.5H_2O·dpdo Containing Framework Based on 4,4′-Dipyradine-Dioxide

Ｃｒｙｓｔａｌｅｎｇｉｎｅｅｒｉｎｇｏｆｃｏｏｒｄｉｎａｔｉｏｎｐｏｌｙ ｍｅｒｓｗｉｔｈｏｐｅｎｆｒａｍｅｗｏｒｋｓａｓｓｅｍｂｌｅｄｆｒｏｍｏｒ ｇａｎｉｃ ｍｅｔａｌｃｏｍｐｏｕｎｄｓｈａｓｂｅｅｎｏｆｇｒｅａｔｉｎｔｅｒ ｅｓｔｓｏｗｉｎｇｔｏｔｈｅｉｒｐｏｔｅｎｔｉａｌｐｒｏｐｅｒｔｉｅｓａｓｎｏｖｅｌｍａｔｅｒｉａｌｓｓｕｃｈａｓｇａｓａｄｓｏｒｐｔｉｏｎ[1,2 ] ,ｉｏｎ ｅｘ ｃｈａｎｇｅ[3] ａｎｄｃａｔａｌｙｓｉｓ[4] .Ｔｈｅｃｏｎｓｔｒｕｃｔｉｏｎｏｆｃｏｏｒｄｉｎａｔｉｏｎｐｏｌｙｍ…     

Processing and Microstructure of LaCrO3 Thin Film Derived from Chelating Precursors

Ｔｈｅｐｅｒｖｏｓｋｉｔｅ ｔｙｐｅＬａＣｒＯ3ｍａｔｅｒｉａｌｈａｓｂｅｅｎｅｘｔｅｎｓｉｖｅｌｙｉｎｖｅｓｔｉｇａｔｅｄｆｏｒｉｔｓａｐｐｌｉｃａ ｔｉｏｎ ,ｓｕｃｈａｓａｎｅｌｅｃｔｒｏｄｅｍａｔｅｒｉａｌ,ｅｌｅｃｔｒｏ ｃａｔａｌｙｓｉｓａｎｄｇａｓｓｅｎｓｏｒ[1～ 3] .Ｃｈｅｍｉｃａｌｃｏｍ ｐｏｓｉｔｉｏｎａｎｄｐｈａｓｅｐｕｒｉｔｙａｒｅｔｗｏｐａｒａｍｅｔｅｒｓｗｈｉｃｈｏｆｔｅｎａｒｅｄｉｆｆｉｃｕｌｔｔｏｂｅｃｏｎｔｒｏｌｌｅｄｉｎｍｕｌｔｉｃｏｍｐｏｎｅｎｔｍｅｔａｌｏｘｉｄｅ…     

Polymerization of Methyl Acrylate with Nd-Al-α,α''''-Dipyridyl Catalyst System

sｉｎｃｅ 1 960ｓ ,ｔｈｅｒｅｓｅａｒｃｈｏｆｔｈｅＺｉｅｇｌｅｒｃａｔａｌｙｓｔａｐｐｌｙｉｎｇｔｏｔｈｅｐｏｌｙｍｅｒｉｚａｔｉｏｎｏｆａｃｒｙ ｌａｔｅｈａｓｂｅｅｎｉｎｃｒｅａｓｉｎｇ[1～ 3] ,ｆｏｒｅｘａｍｐｌｅｔｈｅｐｏｌｙｍｅｒｉｚａｔｉｏｎｏｆａｃｒｙｌａｔｅｗｉｔｈｚｉｒｃｏｎｉｕｍｏｒｒａｒｅｅａｒｔｈｃａｔａｌｙｓｔｓｈａｓｂｅｅｎｐｕｂｌｉｓｈｅｄ[4～ 6 ] .Ｈｏｗｅｖｅｒ ,ｔｈｅｐｏｌｙｍｅｒｉｚａｔｉｏｎｍｅｃｈａｎｉｓｍｏｆｔｈｅａｃｒｙｌａｔｅｗｉｔｈｔｈｅｔｒａｎｓ…     

Structure and Redox Properties of VCe0.95M0.05（M=Cu,Co,Mn,Fe and Cr）Mixed Oxides

Ｖａｎａｄｉｕｍｏｘｉｄｅｈａｓｂｅｅｎｗｉｄｅｌｙｓｔｕｄｉｅｄｉｎｔｈｅｒｅｃｅｎｔｙｅａｒｓｂｅｃａｕｓｅｏｆｉｔｓｉｍｐｏｒｔａｎｃｅｉｎｍａｎｙａｒｅａｓｏｆｃｈｅｍｉｓｔｒｙ .Ｉｎｔｈｅａｒｅａｏｆｃａｔａｌｙ ｓｉｓ ,ｖａｎａｄｉｕｍｏｘｉｄｅｈａｓｂｅｅｎｕｓｅｄａｓａｃａｔａ ｌｙｓｔｆｏｒｓｅｌｅｃｔｉｖｅｏｘｉｄａｔｉｏｎ ,ｏｘｉｄａｔｉｖｅｄｅｈｙｄｒｏ ｇｅｎａｔｉｏｎ ,ａｎｄａｍｍｏｘｉｄａｔｉｏｎｒｅａｃｔｉｏｎ[1～ 4] .Ｉｎｔｈｅｏｘｉｄａｔｉｏｎｒｅａｃｔｉｏｎｏｎ…     

International Workshop On Environmental Catalysis and Air Pollution Control Technologies

Ｉｎｏｒｄｅｒｔｏｉｍｐｒｏｖｅｔｈｅｒｅｓｅａｒｃｈａｎｄｄｅｖｅｌｏｐｍｅｎｔｏｆｅｎｖｉｒｏｎｍｅｎｔａｌｃａｔａｌｙｓｉｓａｎｄａｉｒｐｏｌｌｕｔｉｏｎｃｏｎｔｒｏｌｔｅｃｈｎｏｌｏ ｇｉｅｓｉｎＣｈｉｎａ ,ＵｎｉｔｅｄＮａｔｉｏｎｓＩｎｄｕｓｔｒｉａｌＤｅｖｅｌｏｐｍｅｎｔＯｒｇａｎｉｚａｔｉｏｎａｓｓｉｓｔｓＣｈｉｎａｉｎｄｅｖｅｌｏｐｉｎｇｔｈｒｅｅ ｗａｙｃａｔａｌｙｓｔｓｆｏｒａｕｔｏｍｏｂｉｌｅｅｍｉｓｓｉｏｎｐｏｌｌｕｔｉｏｎｃｏｎｔｒｏｌ .ＩｎｔｅｒｎａｔｉｏｎａｌＷｏｒｋ…     

Effect of Ceria on Structure and Thermostability of Copper-Iron-Oxide Catalyst

Ｃｏｐｐｅｒｏｘｉｄｅａｎｄｉｒｏｎｏｘｉｄｅａｒｅｔｒａｄｉｔｉｏｎ ａｌｏｘｉｄｉｚｉｎｇｃａｔａｌｙｓｔｓ.Ｔｈｅｉｒｍｉｘｔｕｒｅｓａｒｅｇｏｏｄｃａｔａｌｙｓｔｓｆｏｒｔｈｅｐｕｒｉｆｉｃａｔｉｏｎｏｆｗａｓｔｅｇａｓｅｓ,ｅｓ ｐｅｃｉａｌｌｙｅｘｃｅｌｌｅｎｔｆｏｒｃａｔａｌｙｚｉｎｇｔｈｅｒｅｄｕｃｔｉｏｎｏｆｎｉｔｒｏｇｅｎｏｘｉｄｅｂｙｃａｒｂｏｎｏｘｉｄｅａｎｄｔｈｅｏｘｉ ｄａｔｉｏｎｏｆｎｉｔｒｏｇｅｎｏｘｉｄｅｂｙｏｘｙｇｅｎ .Ｒｅｃｅｎｔｒｅ ｓｕｌｔｓａｂｏｕｔｔｈｅｓ…     

Effects of Cerium on Reduction of Non-Chromium Iron Based CO Shift Catalyst

ＣＯｓｈｉｆｔｐｒｏｃｅｓｓｉｓｏｎｅｅｓｓｅｎｔｉａｌｐｒｏｃｅｓｓｉｎｔｈｅｃｈｅｍｉｃａｌｆｅｒｔｉｌｉｚｅｒｉｎｄｕｓｔｒｙａｓｗｅｌｌａｓｏｔｈｅｒｉｎｄｕｓｔｒｙ .Ｉｎｔｈｅｐｒｅｓｅｎｔｔｉｍｅ ,ｔｈｅｉｒｏｎｃａｔａｌｙｓｔｓｃｏｎｔａｉｎｉｎｇｃｈｒｏｍｉｕｍｉｓｓｔｉｌｌｗｉｄｅｌｙｕｓｅｄｉｎｉｎｄｕｓｔｒｙ .Ａｓｔｈｅｒｅａｓｏｎｐｏｉｎｔｅｄｏｕｔｉｎｔｈｅｐｒｅｖｉｏｕｓａｒｔｉｃｌｅ[1] ,ｔｈｅｒｅｉｓａｇｒｅａｔｉｎｔｅｒｅｓｔｉｎｔｈｅｗｏｒｌｄｔｏｄｅｖｅｌｏ…     

The Abstracts of Papers in the Journal of the Chinese Rare Earth Society （inChinese）

ＴｈｅＡｂｓｔｒａｃｔｓｏｆＰａｐｅｒｓｉｎｔｈｅＪｏｕｒｎａｌｏｆｔｈｅＣｈｉｎｅｓｅＲａｒｅＥａｒｔｈＳｏｃｉｅｔｙ（ｉｎＣｈｉｎｅｓｅ）ＥｆｆｅｃｔｓｏｆＲａｒｅＥａｒｔｈＮｉｔｒａｔｅｓｏｎＳｏｍｅＩｍｍｕｎｅＦｕｎｃｔｉｏｎｓｉｎＭＩＣＥＬ...     

Synthesis, Crystal Structure and Fluorescent Properties of a New One-Dimensional Polymer [Sm（ sal ） 4 （ phen）2 Na ] n

A growing attention has been paid to the investi gation of fluorescence enhancement of the lanthanidessince the lanthanides have low absorptivity and poorquantum yields. Fluorescence enhancement has gener ally been achieved through ligand sensitization in re cent years[1~4]. In emission process, an organic lig and is first excited by absorption of light, followed byenergy transfer from the ligand to the excited levels ofa lanthanide, which then emits. Moreover, the fluo rescence of th…     

Synthesis and Characterization of the First Dinuclear Europium (Ⅱ) Complex Supported by Carbon-Bridged Biphenolate Ligand

Anhydrous EuCl3 reacted with sodium carbon-bridged biphenolate LNa2 [ L = 2,2'-methylene bis (6-tert-butyl-4-methyl-phenoxo] in a 1:1 molar ratio in THF in the presence of HMPA (HMPA = hexamethylphosphoric triamide), then the product formed in situ was reduced by Na-K alloy to generate the divalent carbon-bridged biphenolate europium complex [LEu(HMPA)2]2(THF)4(1) in a good isolated yield. Complex 1 was fully characterized by elemental analysis, NMR and IR spectra, and X-ray structural determination. The crystal data of complex 1 are monoclinic, P21/c space group,a = 1.6521(3) nm, b =2.8274(3) nm, c = 1.2074(2) nm, β = 111.723(6)°, V= 5.2393(14) nm3, Z = 2, Dc =1.259 mg·m-3, μ = 1.304 mm-1, F(000) = 2092, R = 0.0815, wR = 0. 1723. Complex 1 is a dimer with two Eu - O bridges. The coordination geometry of each europium atom can be best described as a distorted trigonal bipyramid.     

Reaction of Bis （Methylcyclopentadienyl） Lanthanide Amido Complex with n-Hexyl isocyanate-Synthesis and Characterization of {（MeC5H4 ）2 Yb[ OC（NPh2 ）N（n-hexyl） ]}2

In recent years,the synthesis of polyisocyanatesand their chemical structures have received consider-able attention,because polyisocyanates have somespecial properties,such as chiral spiral structure[1]and liquid crystal[2]etc.We previously reported thatcyclopentadienyl lanthanide amido complexes[3]anddivalent lanthanide complexes[4]both can catalyze theoligomerization or polymerization of phenyl isocyanate.Furthermore,the active intermediates of these reac-tions were obtained by the stoichiom…     

Synthesis, Characterization and Crystal Structure of Neutral Homoleptic Lanthanide Amide Yb（NPh2）3（THF）2

A neutral homoleptic lanthanide amide Yb(NPh2)3(THF)2 was obtained by reaction of anhydrous YbCl3 with LiNPh2 in THF. The product was characterized by elemental analysis, infrared spectrum and X-ray crystallographic analysis. The crystal data are monoclinic, P21/n space group, a=1.2052(2) nm, b=1.9369(3) nm, c=1.6523(2) nm, β=92.79(1)°, V=3.8524(9) nm3, Z=4, Dc=1.417 g*cm-3, μ=24.67 cm-1 (Mo Kα), F(000)=1668, R=0.036, Rw=0.039. The central metal ytterbium is coordinated by three terminal NPh2 groups and two THF molecules to form a five-coordinate distorted trigonal bipyramid. The mean Yb-N bond length is 0.2219(6) nm.     

Synthesis, Structure and Fluorescence Properties of Tb(Ⅲ) Complex with Isonicotinic Acid and Biphenyl-2,2''-Dicarboxylic Acid

Terbium perchlorate reacted with isonicotinic acid (Hpya) and biphenyl-2,2'-dicarboxylic acid (H2dpa) under hydrothermal condition, a new ternary terbium complex [Tb(pya)(dpa)(H2O)]n (1) was synthesized. The structure of the ternary complex was determined by X-ray single crystal diffraction and characterized by elemental analysis, fluorescence measurement. The fluorescence spectrum shows the title complex emits strong green light. The crystal data for the complex: monoclinic, P21/n space group, a=0.8908(5) nm, b=1.0569(6) nm, c=2.0969(11) nm, β=98.446(8)°, V=1.9528(18) nm3, Z=4, R=0.0241, wR2=0.0534. The center Tb3 ion is eight coordinated. The coordination polyhedron around Tb3 ion can be described as a distorted square antiprism. The complex forms an infinite one-dimensional alternating chain polymer by bridging carboxyl groups of pya and dpa.     

Synthesis and Crystal Structure of a 4f-3d Complex [La(DMF)_6(H_2O)_3][Cr(CN)_6]·2H_2O

Ｒｅｃｅｎｔｌｙ ,ｔｈｅｒｅｈａｓｂｅｅｎｃｏｎｓｉｄｅｒａｂｌｅｉｎ ｔｅｒｅｓｔｉｎｌａｎｔｈａｎｉｄｅ(Ⅲ )ｈｅｘａｃｙａｎｏｆｅｒｒａｔｅｓａｎｄｔｈｅａｎａｌｏｇｏｕｓｃｏｂａｌｔ(Ⅲ )ａｓｗｅｌｌａｓｃｈｒｏｍｉｕｍ(Ⅲ )ｃｏｍｐｌｅｘｅｓｂｅｃａｕｓｅｏｆｔｈｅｉｒｐｏｔｅｎｔｉａｌａｓｃａｔａｌｙｔｉｃ ,ｓｅｍｉｃｏｎｄｕｃｔｉｖｅ ,ａｎｄｍａｇｎｅｔｉｃｍａｔｅ ｒｉａｌｓ[1～ 4] .Ｆｏｒｅｘａｍｐｌｅ ,ｍａｇｎｅｔｉｃｓｔｕｄｉｅｓｏｎａｓｅｒｉｅｓｏｆｔｈｒｅｅ ｄｉｍｅｎｓｉｏ…     

Synthesis, Structure and Luminescent Property of a Zinc(Ⅱ) Coordination Polymer Incorporating Flexible Cyclohexane-1,2,3,4,5,6-hexacarboxylate Ligand

The hydrothermal reaction of Zn(NO<,3>)<,3>.4H<,2>O, cyclohexane-1,2,3,4,5,6-hexacarboxylic acid hydrate (H<,6>L<'Ⅰ>-H<,2>O, cis-conformation L<'Ⅰ>: a,e,a,e,a,e) and 2,2'-bpy yielded a new coordination polymer [Zn<,2>(H<,2>L<'Ⅱ>)(2,2'-bpy)] 2H<,2>O(trans-conformation L<'Ⅱ>: e,e,e,e,e,e), which was characterized by single-crystal X-ray diffraction, elemental analysis, IR and XRPD(X-ray powder diffraction). This complex crystallized in the triclinic system, with P1 space group and parameters a=0.66922(5) nm, b=0.97291(8) nm, c=1.22184(9) nm, α=99.0020(10)°, β=99.1300(10)°, y=99.1910(10)°, V=0.76176(10) nm<'3> and Z=2. The structure is a three-dimensional supramolecular network based on linear coordination chains through π-π stacking and hydrogen bonding interactions. The confromation of the starting ligand H<,6>L<'Ⅰ> transfromed to the H<,2>L<'Ⅱ>. The complex emits strong luminescence at room temperature.     

Syntheses and Crystal Structure Characterizations of New Rare Earth Copper Bismuth Compounds RE CuBi2 （RE = La, Gd and Dy）

The tide new compounds with chemical formula RE CuBi2 were synthesized by arc melting method followed by annealing. The crystal structures refined using Rietveld method and X-ray powder diffraction data show to be isotypic to CaMnBi2 structure type with space group P4/nmm (No. 129). The unit cell parameters are a=0.457946(4)nm,c =0. 98858(2) nm, V =0. 207319(8) nm^3 for LaCuBi2, a = 0.449279(9) nm, c = 0. 95958(4) nm, V = 0. 19369(2) nm^3 for GdCuBi2 and a =0. 447680(7) nm, c =0. 95124( 3 ) nm, V = 0. 190644(5 )nm^3 for DyCuBi2 respectively, showing lanthanide contraction. The structure is characterized by layers of edge-shearing CuBi4 tetrahedron and covalently bonded Bi square net separated by rare earth atoms.     

配合物NH4[Ln（H2O）9][（VⅣO）2（μ2-O）（nta）2]（Ln=Sm,Y）的合成及钐配合物的晶体结构

在水溶液中合成了两个钒-稀土配合物NH4[Ln(H2O)9][(VIVO)2(μ2-O)(nta)2](Ln=Sm,Y),其中钒-钐配合物为单晶体,钒-钇配合物为多晶态粉末。单晶X-射线衍射分析表明,钒-钐配合物属单斜晶系,C2/c空间群,晶胞参数a=2.336(4),b=1.0907(9),c=1.0823(10)nm,β=93.21(2)°,V=2.753(6)nm3,Z=4。配合物包含了一个二核的钒阴离子[(VIVO)2(μ2-O)(nta)2]4-(H3nta=氨三乙酸)和一个九配位的钐阳离子[Sm(H2O)9]3+,两者通过氢键连接成三维超分子结构。     

Synthesis and Crystal Structure of (3,6-Dichloro-2-nitrophenyl)(3-nitrophenyl)methanone

Novel compounds, (3,6-dichloro-2-nitrophenyl)(3-nitrophenyl)methanone(2), (2-amino-3,6-dichloro- phenyl)(3-aminophenyl)methanone(3) and 1-[3-(2-amino-3,6-dichlorobenzoyl)phenyl]-1H-pyrrole-2,5-dione(4), were synthesized from the initial compound 2,5-dichiorobenzophenone(1) and characterized by <'1>H NMR, <'13>C NMR, IR, mass spectrum and element analysis, respectively. The single crystal of compound 2 was obtained and determined by X-ray diffraction analysis. The single crystal data illustrates that it belongs to the monoclinic system, space group P2<,1>/c with a=0.7587(4) nm, b=2.4724(4) nm, c=0.8081(3) nm, α=90°, β=112.85(2)°, y=90°, V=1.3970(9) nm<'3>, Z=4, D<,c>=1.622 g/cm<'3>, M<,r>(C<,13>H<,6>Cl<,2>N<,2>O<,5>)=341.10,/μ(Mo Kα)=0.49 mm<'-1>, F(000)=688, the final R=0.048 and wR=0.144 for 1665 observed reflections with l>2σ(Ⅰ). The title molecule forms a "T" type crystal structure and the dihedral an- gel of the two phenyl rings is 65.0(1)°.