Preparation of Ce-Zr-O solid solution

A single phase solid solution of Ce-Zr-O can be made by using NH₄HCO₃ solution as precipitating agent. The influence of preparation conditions, such as pH, Zr⁴⁺/(CO₃ ^2-+HCO₃ ^-) and Ce³⁺/Zr⁴⁺ ratio on the formation of the solid solution were investigated. The results show that a single phase Ce-Zr-O solid solution can be formed only under a narrow window of preparation conditions, indicating that some compounds are formed in the precipitating process. The compound may contain Ce³⁺, Zr⁴⁺, CO₃ ^2-, HCO^3-, and OH^-. The solid solution so prepared can be described as Ce_0.37Zr_0.63O₂. This revised version was published online in August 2006 with corrections to the Cover Date.     

微铂电极上1-酰基二茂铁动力学参数的测定

本文合成并研究了１－酰基二茂铁在ＣＨ２Ｃｌ２中的伏安行为，测定了它们在ＣＨ２Ｃｌ２中不同支持电解质浓度时的扩散系数，并分明用Ｚ．Ｇａｌｕｓ和Ｋ．Ａｏｋｉ方法计算了两种状态下的电子迁移速率常数。讨论了取代基的诱导效应和共轭效应及其链长对１－酰基二茂铁的动力学性质的影响以及支持电解质及其浓度等因素对伏安曲线的影响。     

一个二维梯状化合物[Ni(μ1，5-dca)2(en)]n的合成，结构和磁性(英)

A new nickel(Ⅱ)-dicyanamide compound, [Ni(dca)₂(en)]_n (1) (dca=dicyanamide anion, [N(CN)₂]^-); en=ethylene diamine), has been synthesized and its structure has been determined by single crystal X-ray diffraction analysis. The crystal is monoclinic, space group P2₁/n with unit cell dimensions: a=0.694 3(1) nm, b=1.041 5(2) nm, c=1.4132(2) nm, and β=90.381°, Z=4, V=1.011 0(3) nm³. In this compound, the adjacent nickel atoms are connected by dca all in μ_1，5-bridging mode to form ladder-like units, which are linked with double dca bridges to generate a regular infinite stair-like structure. Temperature-dependent magnetic susceptibility was also characterized for this compound. CCDC: 208276.     

一维链配位聚合物[Mn(acacen){N(CN)2}]n的合成、结构和性质的研究(英)

The manganese(Ⅲ) complex [Mn(acacen){N(CN)₂}]_n [H₂acacen=bis(acetylacetone)ethylenediimine] has been synthesized and the structure has been determined. The complex forms a one-dimensional chain structure via the bidentate bridge ligand μ_1,5-[N(CN)₂]^- linking [Mn(acacen)] moiety. The magnetic property of the compound (75～300 K) shows the existence of an antiferromagnetic exchange interaction among paramagnetic centers along the chain. CCDC: 244940.     

Preparation and catalytic performance of superfine Ni/BaTiO3 catalyst

Superfine Ni/BaTiO₃ catalysts were prepared by impregnation method and used successfully for CO₂ reforming CH₄ to syngas. The effects of preparation method and the temperatures of calcination, reduction and reaction on the catalytic activity of the Ni/BaTiO₃ system were investigated. This revised version was published online in June 2006 with corrections to the Cover Date.     

电动势法测定Cu(Ⅰ)与乙炔生成配合物的热力学函数

乙炔与Cu(I)生成配合物的热力学函数文献报道鲜见,且不同作者的测定结果差异较大。本文用改进的电动势法。对在氯丁橡胶、聚氯乙烯,乙醛等工业过程有重大意义的Cu(I)与乙炔配合物进行测定,得到更合理的结果。     

二(β-二酮)氧钒(Ⅳ)与含氮碱加合物的合成和表征

合成了一系列VO(β-dik)_2L类型加合物,其中β-dik分别为苯甲酰丙酮,2-噻吩甲酰三氟丙酮,L3-甲基吡啶、4-甲基吡啶、吗啉、异喹啉,VO(bza)_2Mor、VO(tta)_2Mor、VO(tta)_2iso-q为首次合成,并通过元素分析、摩尔电导、红外光谱、电子光谱、顺磁共振波谱等对加合物进行了较系统的表征工作。     

光度检测离子色谱法测定大豆中的植酸

本文介绍了用光度检测离子色谱法分离分析植酸的适宜条件。以NaNO_3和HNO_3为淋洗液,用磺基水杨酸和三氯化铁为柱后衍生试剂,使用国产YSA型阴离子分离柱分离和测定了大豆中的植酸,得到满意的结果。     

三(2-苯并咪唑亚甲基)胺硝酸镍(Ⅱ)配合物的合成及结构

三（２－苯并咪唑亚甲基）胺简称ＮＴＢ与Ｎｉ（Ⅱ）的硝酸盐形成配合物Ｃ２８Ｈ３５Ｎ９Ｏ９Ｓ２Ｎｉ。本文报道其合成，红外光谱及晶体结构。该化合物为三斜晶系，空间Ｐ１↑－，ａ＝９．６５０（３），ｂ＝１２．７１６（２），ｃ＝１４．４３６Ａ，α＝１１．４６（２），β＝９１．６６（３），γ＝９７．５５（２）°，Ｖ＝１７１８（２）Ａ＾３，Ｚ＝２，Ｆ（０００）＝７９３，Ｄｃ＝１．４８ｇ／ｃｍ＾３，Ｍｒ＝７６４．１