查询词典 nickel

Moreover, the effect mechanism of electroless plating nickel brightener on nickel deposition and the effect of phosphorus content on corrosion property of electroless plating black nickel were discussed in this paper.

同时，为了使所获得的镀层在工业中得到广泛的应用，又对化学镀镍光亮剂的作用机理及不同磷的含量对黑镍镀层耐腐性的影响进行了深入的研究。

Wherein, the chemical formula of said compound is γ-HaKbNac(H2O)dNixM1-XO2 and the method comprises that mixing the nickel salt solution and at least one metal salt solution to attain the solution A; preparing caustic soda or caustic potash solution and adding sodium carbonate or potassium carbonate to attain the solution B; preparing the ammonia solution C; reacting the A, B, and C, processing the solid-liquid separation to attain the ball α nickel hydroxide; reacting with the oxidant in the solution of caustic soda or caustic potash to attain the black solid-liquid mixture and processing the solid-liquid separation to attain the ball γ hydroxyl nickel oxide.

其化学表达式为γ-HaKbNac(H2O)dNixM1-XO2，将镍盐溶液与至少一种金属盐溶液混合得溶液A，配制氢氧化钠或氢氧化钾溶液，加入碳酸钠或碳酸钾得溶液B；配制氨水溶液C；将A、B、C反应，固液分离，得球形α氢氧化镍；在氢氧化钠或氢氧化钾溶液中与氧化剂反应，得黑色固液混合物，再固液分离，得球形γ羟基氧化镍。

Two bispyrazolylimine nickel complexes [bis-N-(phenyl-1,3,5-dimethylpyrazolylmethylene) phenylimine nickel dibromide] (Cat.1) and [bis-4-methoxy-N-(phenyl-1,3,5-dimethylpyrazolylmethylene) phenylimine nickel dibromide] (Cat.2) were synthesized.

合成了两种双吡唑亚胺镍配合物：双－N-（苯基－1-3，5-二甲基吡唑基亚甲基）苯基亚胺二溴化镍Cat.1）和双－4-甲氧基－N-（苯基－1-3，5-二甲基吡唑基亚甲基）苯基亚胺二溴化镍

The main points andcontent of the paper are indicated as following:(1) Producing cobalt matte by carbothermal reduction and pyritesulfuration of nickel converter slag at high temperature A mineralogical study of coverter slag shows that the most of cobaltand nickel exist in fayalite of a kind of silicate minerals as a form ofoxide and the rest of cobalt and nickel and most of copper in slag assulphide.

论文的主要研究内容和结果如下：(1)转炉渣高温还原硫化制备钴冰铜转炉渣的矿物学研究表明，在转炉渣中大部分钴、镍以氧化物形态"溶"于铁橄榄石等硅酸盐类矿物中，其余钴、镍及大部分铜以硫化矿形态赋存于转炉渣中。

Simply Whispers are made from stainless steel, nickel free sterling silver, nickel free gold and other nickel free materials.

简单地私语是由不锈钢制成，无镍纯银，黄金和其他自由镍镍的免费资料。

Based on KT-01 nickel catalyst, the scientific research personnel of our company and the expert group of the former subject group from Lanzhou University made joint efforts to tackle the key problems and successfully developed the 2nd generation of KT-02 supported nickel catalyst through in-depth study on the technical formula, catalytic activity and other mechanisms and taking modified carrier, the properties of acid and alkali, the degree of decentralization of active ingredients on the carrier surface, and fundamental breakthrough has been achieved on the aspects of catalytic activity, specific surface area, bulk density, etc, and the technical defects of KT-01 nickel catalyst are completely overcome; the catalytic activity becomes higher, the starting temperature becomes lower, the industrial serviceability temperature is lowered and the yield increased.

在KT-01型镍催化剂的基础上，我公司科研人员与兰州大学原课题组专家联合攻关，通过对工艺配方及催化活性等机理的深入研究，从载体改性、酸碱性、活性组分在载体表面的分散程度等方面入手，成功开发出第二代KT-02负载型镍催化剂系列产品，在催化活性、比表面积和堆密度等方面都有根本性突破，彻底克服了KT-01型镍催化剂的技术缺陷，使催化活性更高、启动温度更低，降低了工业使用温度，提高了生产收率。

The main products are: calcium sulfate / calcium nitrate / calcium carbonate / copper sulfate / chloride, copper / zinc sulfate / nitric acid zinc / zinc chloride / potassium sulfate / potassium chloride / potassium bromide / potassium aluminum sulfate / potassium dihydrogen phosphate / 2 of potassium hydrogen phosphate / sodium bromide / sodium chloride / sodium nitrate / sodium fluoride / trisodium phosphate / sodium dihydrogen phosphate / disodium hydrogen phosphate / crystallization of sodium carbonate / anhydrous sodium carbonate / aluminum sulfate / nitrate aluminum / crystallization of aluminum chloride / aluminum hydroxide / nitrate Fe / hydrobromide / oxalic acid / boric acid / citric acid / barium chloride / Azone / magnesium sulfate / magnesium nitrate / magnesium chloride / ammonium chloride / ammonium sulfate / Bifluoride ammonium / ammonium aluminum sulfate / ferrous ammonium sulfate / ammonium dihydrogen phosphate / diammonium hydrogen phosphate / bromide / tetrabutylammonium bromide / chloride, nickel / nickel nitrate / sulfate nickel / cadmium chloride / cadmium sulfate / nitrate Cadmium / Cadmium Carbonate / Strontium / strontium nitrate / sulfuric acid manganese / manganese chloride / 50% manganese nitrate solution / stannous chloride / zinc chloride, such as crystallization of the four largest packing of chemical reagents AR and CP level.

主要产品有：硫酸钙/硝酸钙/碳酸钙/硫酸铜/氯化铜/硫酸锌/硝酸锌/氯化锌/硫酸钾/氯化钾/溴化钾/硫酸铝钾/磷酸二氢钾/磷酸氢二钾/溴化钠/氯化钠/硝酸钠/氟化钠/磷酸三钠/磷酸二氢钠/磷酸氢二钠/结晶碳酸钠/无水碳酸钠/硫酸铝/硝酸铝/结晶三氯化铝/氢氧化铝/硝酸铁/氢溴酸/草酸/硼酸/柠檬酸/氯化钡/氮酮/硫酸镁/硝酸镁/氯化镁/氯化铵/硫酸铵/氟化氢铵/硫酸铝铵/硫酸亚铁铵/磷酸二氢铵/磷酸氢二铵/溴化铵/四丁基溴化铵/氯化镍/硝酸镍/硫酸镍/氯化镉/硫酸镉/硝酸镉/碳酸镉/碳酸锶/硝酸锶/硫酸锰/氯化锰/50%硝酸锰溶液/氯化亚锡/结晶四氯化锌等大包装化学试剂的AR和CP级别。

On the NiO/SiO〓 catalyst prepared by IM, the main hydrogenation product of MA was SA, the activity and selectivity were almost no relation with the nickel content and nickel species 3. Summarizing the characterization and activity evaluation of the catalysts, we concluded: On nickel based catalyst, when NiO was crystallite, and the Ni〓 that was prepared by reducing, hydrogenation of the MA could lead to SA but not to γ-BL; when NiO was cluster and had a properly interaction with the support, the Ni〓 prepared by reducing, could hydrogenate MA to SA then to γ-BL. When NiO cluster and crystallite were both existed on the catalyst, the hydrogenation products were mixture of SA and γ-BL, and the amounts of SA and γ-BL were related with the ratio of cluster and crystallite.

综合催化剂的表征和活性评价得出：当镍基催化剂上氧化镍以结晶态存在，经氢还原后的零价镍可使顺丁烯二酸酐加氢得到丁二酸酐，丁二酸酐难以进一步加氢为γ-丁内酯；当镍基催化剂上氧化镍以簇团形式存在，与载体之间有适当的相互作用时，经氢还原后的零价镍可使顺丁烯二酸酐加氢得到的丁二酸酐进一步加氢为γ-丁内酯；若催化剂上氧化镍既有结晶态又有簇团形式时，随二者含量比例不同而得到丁二酸酐和γ-丁内酯的混合物。

The process is composed of three steps: the formation of Ni_2 gel; the nucleation of nickel oxalate; the transition from Ni_2 gel into nickel oxalate sol.The nickel oxalate synthesized is identified by XRD to beα-NiC_2O_4·2H_2O with rhombohedron morphology, while two angles of the rhombus at underside are 106 and 74 degrees separately.

研究中，采用SEM、XRD、FTIR、TGA—DTA、GCMS等方法，对粉末样品进行表征。1凝胶—溶胶法制备单分散草酸镍粉末提出了一种凝胶—溶胶法制备单分散草酸镍的方法，由Ni_2凝胶生成—NiC_2O_4·2H_2O颗粒形核—凝胶Ni(OH_2向溶胶(NiC_2O_4·2H_2O)转化3个步骤组成。

The XRD analysis revealed that the relative pure nickel metal products with an average size of 12.6 nm could be obtained using PVA as surfactant, a mixture of nickel and nickel sesquioxide products with an average size of 25 nm was obtained using DTAB as surfactant.

结果表明：以PVA作表面活性剂得到相对纯的纳米镍粉，平均粒径约为12.6nm；而以DTAB为表面活性剂得到镍和三氧化二镍的混合物，平均粒径约为25nm；采用PVA为表面活性剂在产品的纯度和粒度上都优于DTAB。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。