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Deuterium-labeling experiments indicate that the catalytically active species is ruthenium-π-alkyne rather than ruthenium vinylidene species.

Deuterium标记实验表明,催化活性物种是-π-炔而不是偏物种。

The catalytic effect of ruthenium on the oxidation decolorizing reaction of chlorophosphonazo-mk by potassium periodate in phosphoric acid medium was investigated.

研究了在磷酸介质中,痕量催化高碘酸钾氧化偶氮氯膦mk褪色反应特性,测定了反应级数、反应速率方程和表观活化能,拟定了反应的最佳条件,建立了一个测定痕量的催化动力学新方法。

Ruthenium molybdenum alloy or a superconducting material, ruthenium mainly in the extraction by-product of platinum when you get .

钼合金还是一种超导材料,主要是在提取铂时得到的副产品。

It isconfirmed by ~1H NMR,~(13)C NMR and X-ray crystallographic analysis that complexes 60-63are monopyridine complexes and show distorted square pyramid geometries; complexes 64and 65 are bispyridine complexes and show pseudo-octahedral geometries, where twopyridine ligands are in cis arrangement and trans to the NHC and the benzylidene ligandrespectively, the bond length between ruthenium and pyridine ligand trans to the benzylideneligand is 16 pm longer than the bond length between ruthenium and pyridine ligand trans tothe NHC ligand.

1H NMR、~(13)C NMR及X射线单晶衍射分析证明,配合物60-63是单吡啶衍生物配位的卡宾配合物,具有变形的四方锥构型;配合物64、65为双吡啶衍生物配位的卡宾配合物,具有变形的八面体构型,其中两个顺式配位的吡啶衍生物分别处于氮杂环卡宾和苯亚甲基的反位,处于苯亚甲基反位的吡啶衍生物对应的-氮键长要比处于氮杂环卡宾反位的长出16 pm。

New ruthenium benzylidene complexes benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] [k~2-diphenylphosphinoacetato] monochlororuthenium (46), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene][k~2-3-propionato]monochlororuthenium (47), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] [k~2-2-benzonato]monochlororuthenium (48) featured five-membered, flexible six-membered and rigidsix-membered chelating rings respectively are prepared by reactions of complex 41 withcorresponding sodium phosphino-carboxylates. It is confirmed by X-ray crystallographicanalysis that the coordination geometries of complexes 46 and 47 are distorted squarepyramids with phosphino-carboxylate ligands chelating to ruthenium, and the coordinationbetween ruthenium and benzylidene ligands are strengthened.

用二苯基瞵乙酸盐、二苯基膦丙酸盐、二苯基膦苯甲酸盐与卡宾配合物41反应合成了三个新的卡宾配合物:含五元膦-氧螯合环的1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基--一氯合(46)、含六元柔性膦-氧螯合环的[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基--一氯合(47)及含六元刚性膦-氧螯合环的[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基]-苯亚甲基--一氯合(48)。X射线单晶衍射分析证明,配合物46、47都为变形的四方锥构型,膦-氧与形成螯合配位,其中苯亚甲基与的配位得以加强。

Benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene]dichloro(2-methylpyridine)ruthenium (62), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] dichloro(2,4-dimethylpyridine)ruthen ium (63) introduce ortho substituted pyridine as dissociating ligand to weaken Ru-N bondand accelerate dissociation of pyridine derivative ligand through steric hindrance.

卡宾配合物[1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基]-苯亚甲基-(2-甲基吡啶)-二氯合(62),1,3-二-(2,6-二甲苯基)-4,5-二氢咪唑基1-苯亚甲基-(2,4-二甲基吡啶)-二氯合(63)中,邻位取代的吡啶作为解离配体,通过邻位基团的空间效应削弱-氮配位键,使配体更易解离,提高了催化剂的初活性。

In chapter 1, the progress in study of the ruthenium complex oxides. especially the coexistance of magnetism and superconductivity in 〓 and 〓 are introduced. The introduction makes conclusion that all of the Ru-1212 and Ru-1222 compounds reported are accompanied by small amounts of SrRuO〓 impurities, this is to say that, it is difficult to synthesize pure samples of these two compounds by traditional solid state reaction. So the author think that the studies for new synthesis methods of ruthenate superconductors which is beneficial to the synthesis of new type precious metals superconductivity is very important till now.

第一章重点综述了系复合氧化物的研究进展,特别是其中超导电性的发现及其系1212、1222相铜氧化物超导电性和铁磁性共存的特征,在此基础上可以看出,至今文献报道所获得的Ru-1212和Ru-1222相化合物都含有少量的SrRuO〓杂相,即很难通过原有的固相反应方法得到纯相化合物,由此作者提出,现有系超导氧化物合成的新方法研究仍具有重要的现实意义,这也将更有利于探索合成新型贵金属超导体。

A highly active hydrogen added catalytic nanometer Ru/C is made by reducing metal ruthenate, getting nanometer ruthenate metal glue under the protection of surface activator, filtering, washing glue solution drawing by the carrier to get highly scattered loading nanometer ruthenate metal catalyst.

本发明涉及一种高活性加氢催化剂纳米Ru/C的制备方法,该方法首先通过化学还原金属盐,制得表面活性剂保护下的纳米金属胶体,然后用载体吸附制得的胶体溶液,经过滤,洗涤,获得高度分散的负载型纳米金属催化剂。

Scanning electron microscope and atomic force microscope revealed that ruthenium oxide particles incorporated onto the nafion polymer film. RuO/Nf/GCE film modified electrode showed excellent electrocatalytic activity for the oxidation of dopamine and ascorbic acid.

本研究主要是使用循环伏安法使氧化稳定沉积在Nafion修饰电极上,形成氧化/Nafion 薄膜修饰电极,利用电化学石英晶体微天平观察其在电极上的成长情形,旋转环碟电极法则是用来研究其电催化反应,并用扫描式电子显微镜观察氧化结合在Nafion聚合薄膜上的表面现象。

The cyclic voltammograms recorded the deposition of the ruthenium oxide, Ruthenium oxide/hexachloroiridate(RuOx /IrCl6), platinum films have been prepared, and ruthenium oxide/hexachloroiridate/platinum(RuOx /IrCl62-/Pt) hybrid films directly preparation from the mixing of Ru3+, IrCl62–and PtCl62– ions from the acidic aqueous solutions.

氧化物,氧化物/铱氯化物(RuOx /IrCl6),铂,氧化物/铂/铱氯化物(RuOx /IrCl62-/Pt)薄膜,在酸性溶液中可经由混合Ru3+、IrCl62–和 PtCl62–或单独各别透过循环伏安法所制备而成。

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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?